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Elsevier

Libros en Ciencias de la Tierra y Planetarias

  • Agricultural Engineering Soil Mechanics

    • 1 Edición
    • Volumen 10
    • E. McKyes
    • Inglés
    This book provides an introduction to classical soil mechanics and foundation engineering, and applies these principles to agricultural engineering situations. Theoretical design formulae are given, plus tables and graphs dealing with bearing capacity factors, wall pressure factors, soil cutting numbers and soil mechanical properties. Many example problems of design and analysis are solved in the text, and there are unsolved problems given for each chapter.The text begins with descriptions of soil origins and classification systems, including agricultural classification schemes, and then introduces classical concepts of soil strength and strength measurement techniques in the laboratory and in the field. Soil mechanics is applied to the design of shallow foundations, and the design formulae as well as tables of bearing capacity factors for design use are provided. New research and design findings in the specialized area of tall and heavy farm silos are also given, in addition to deep pile foundation design for heavy structures on very soft soils. Water flow in soils is treated, together with stability of ditch bank slopes and small earth dams, design of retaining walls and pressure pressures in bins and silos, soil erosion and protection methods, soil cutting and tillage design methods, soil compaction analysis, the use of geotextiles and problems of soil freezing.The book is directed primarily at professional university students in Agricultural Engineering, but will also be of interest to scientists working in other engineering branches, landscape architecture, soil physics and the like.

  • Computational Methods in Subsurface Flow

    • 3 Edición
    • Peter S. Huyakorn
    • Inglés
    Computational Methods in Subsurface Flow explores the application of all of the commonly encountered computational methods to subsurface problems. Among the problems considered in this book are groundwater flow and contaminant transport; moisture movement in variably saturated soils; land subsidence and similar flow and deformation processes in soil and rock mechanics; and oil and geothermal reservoir engineering. This book is organized into 10 chapters and begins with an introduction to partial differential and various solution approaches used in subsurface flow. The discussion then shifts to the fundamental theory of the finite element method, with emphasis on the Galerkin finite element method and how it can be used to solve a wide range of subsurface problems. The subjects treated range from simple problems of saturated groundwater flow to more complex ones of moisture movement and multiphase flow in petroleum reservoirs. The chapters that follow focus on fluid flow and mechanical deformation of conventional and fractured porous media; point and subdomain collocation techniques and the boundary element technique; and the applications of finite difference techniques to single- and multiphase flow and solute transport. The final chapter is devoted to other alternative numerical methods that are based on combinations of the standard finite difference approach and classical mathematics. This book is intended for senior undergraduate and graduate students in geoscience and engineering, as well as for professional groundwater hydrologists, engineers, and research scientists who want to solve or model subsurface problems using numerical techniques.

  • Seismic Risk and Engineering Decisions

    • 1 Edición
    • Cinna Lomnitz
    • Inglés
    Seismic Risk and Engineering Decisions attempts to bridge the gap in decision making between earthquake characteristics and structural behavior. The book begins by providing the background on earthquake generation and characteristics. It reviews the present state of matters in seismicity assessment and treats uncertainties explicitly. The impact of earthquakes on large bodies of water and structures is also discussed. These discussions set the stage for the final part of the book, which deals with the principles and implications of seismic design decision analysis. The book also delves into the selection of instruments for seismological research and engineering applications, with emphasis on widely used conventional seismological equipment. This book is intended to help experienced consulting engineers in assessing seismic risk and making rational decisions when locating and designing important engineering works and when drafting building codes and land use regulations. It will also provide advanced students of engineering with bases for benefiting from his future experience.

  • Elemental Analysis in Geochemistry

    • 1 Edición
    • Volumen 8
    • Alexis Volborth
    • Inglés
    Elemental Analysis in Geochemistry: A. Major Elements provides an introduction to basic classical and modern instrumental ""macro"" methods for geochemical research. The intention is to acquaint the beginning analyst or geochemist with the minimum of analytical methods required to satisfactorily perform a complex silicate or similar analysis. By combining classical and modern instrumental methods in one book, strong emphasis is put on the importance of the analyst's ability to grasp the general structure and relation of some of the most frequently used analytical techniques. The book begins with basic concepts such as the preparation and decomposition of samples; statistical evaluation; and methods of separation and analysis. It outlines the classical qualitative separation scheme, which is very useful in understanding the analytical problems of complex mixtures, especially when hydrogen sulfide group metals are present. It discusses analytical techniques such as the detection and quantitative gravimetric analysis of silicon; volumetric or titrimetric methods; emission photometric analysis; atomic absorption spectroscopy; nondestructive instrumental methods; methods in X-ray spectrochemistry; and developments in neutron activation analysis.

  • Chemical Analysis Of Silicate Rocks

    • 1 Edición
    • Volumen 6
    • A Easton
    • Inglés
    Chemical Analysis of Silicate Rocks is the sixth book in the series, “Methods in Geochemistry and Geophysics.” This book provides procedures in chemical analysis of the principal types of silicate rocks and minerals, and it discusses each procedure at length. The book presents different apparatuses and reagents, such as balance and weighs, glassware and porcelain, platinum and substitutes, and filters that are used in the chemical analysis of silicate rocks. Laboratory instruments, such as pH meters, spectrophotometers and flame photometers, are presented in the third chapter. The fourth chapter focuses on the major factors in spectrophotometric methods. The next three chapters cover the common operations in silicate analysis, chemical analysis of silicate rocks, and preparation of the laboratory sample. From chapter eight through 20, each chapter discusses various silicate rocks and minerals, and presents the methods to be used for their chemical analysis. These chemical components are silicon, total iron, titanium, aluminum, calcium, magnesium, ferrous iron, manganese, chromium, alkalies, water and carbon dioxide, phosphorus, and total sulfur. Chapters 21 and 22 offer the formulas of minerals and the determination of specific gravity. The book closes by providing notes on the precision and accuracy of results obtained in silicate rock.

  • Atomic Absorption Spectrometry In Geology

    • 2 Edición
    • Volumen 7
    • Ernest Angino
    • Inglés
    Atomic Absorption Spectrometry in Geology, Second Edition, aims to introduce geologists to the basic simplicity and applicability of atomic absorption spectrometry as it relates to geologic problems; to provide a summary of applications of atomic absorption to geology that are at scattered throughout the literature; and to encourage the accelerated application of atomic absorption spectrometry to geological problems. The book is organized into two parts. The first part, ""Theory and instrumentation,"" explains the theory of atomic absorption spectrophotometry; the operation of the atomic absorption spectrophotometer; and the types of interferences in atomic absorption spectrometry. The second part, ""Methods and applications,"" deals with applications of the atomic absorption method, including detection of the metal content of natural waters; metallic content of ores; and the analysis of trace elements in rocks and minerals. Also discussed are applications of the atomic absorption method in marine geochemistry and for isotopic abundance studies. The book includes some Appendices to the First Edition.

  • Electromagnetic Compatibility in Underground Mining

    Selected Problems
    • 1 Edición
    • K. Miskiewicz + 3 más
    • F. Krasucki
    • Inglés
    Theoretical and technical problems of electromagnetic compatibility (EMC) in mining are covered in this volume. EMC is discussed in three main groups of problems: sources (generation) of interference, propagation of interference in mining conditions, the influence of interferences on mining devices, particularly electronic devices used in deep coal mines. Propagation of interference and its influence on mining communication and signalling systems as well as on control systems of mining machines are discussed. Attention is paid to the influences of interference on dispatching sytems which give to the dispatcher some information about mining hazards. The book will be of interest to mining and electrical engineers.

  • Mine Winding and Transport

    • 1 Edición
    • S.C. Walker
    • Inglés
    Changes in size and power of available mining transport equipment, combined with improved means of control involving leaky feeder radio and computers, demands a new look at the problem of mine winding and transport. Such changes require the traditional mining engineer to have a much greater engineering application. This book is intended to satisfy that requirement.All the important means of transporting operatives and minerals are addressed, both below ground and on the surface. Safe, speedy and economic transport from the point of mineral extraction to leaving the mine is paramount. This work covers all aspects of the problem including: (1) the design and application of steel wire ropes to a variety of industrial applications, and the various drums and pulleys necessary; (2) a ready means of calculating output/throughput of various transport modes, and relating such to their power requirement; and (3) information on transport modes that enables the most suitable system for given conditions to be determined.A ``first principle'' approach has been adopted throughout, and extensive use of practical examples allows the solution of virtually all associated problems. Although formulae are used where necessary for an understanding of the content, the numerous tables included enable the practicing engineer to make short cuts to more quickly solve particular problems. In addition, the provision of a considerable number of operational constants, many not previously published, enable a more speedy and accurate solution to be effected. By comparing the calculated solutions to a particular problem, the most economic transport mode may be determined.Mining, mechanical and electrical engineers concerned with the safe movement of men or material will find this book of particular use, as will the student preparing for examinations on the subject.

  • Introduction to Digital Filtering in Geophysics

    • 1 Edición
    • O. Kulhánek
    • Inglés

  • Biology and Geology of Coral Reefs V3

    Biology 2
    • 1 Edición
    • O.A. Jones
    • Inglés
    Biology and Geology of Coral Reefs, Volume III: Biology 2 covers the major advances made in the biological aspects of coral reef problems. This book discusses the ecology, animal associates, and toxicity of coral reefs. Composed of 11 chapters, the book initially describes the diversity of animals permanently or temporarily associated with living corals despite the formidable nematocyst batteries possessed by corals. The text goes on discussing some specializations of some shrimps and prawns permanently associated with living corals, thus, augmenting the number of biological niches available for colonization. The subsequent chapters deal with the appearance and distribution of coral reefs echinoderms and their biogeography; the role of fishes in the energetic of the coral reef system; the high incidence of toxic fishes in coral reef waters; and the origin, transmission, detection, pharmacology, and chemistry of ciguatoxin. The book also discusses natural and man-induced destruction of coral reef communities and the rate, manner, and extent of recovery of such destruction. It also describes the types of vegetation that grow on the limestone substratum provided by coral islands. Another chapter provides distributional data on the birds of the Great Barrier Reef region and the behavior and evolution of island populations of sea birds. The concluding chapters present the general biology of sea turtles and the factors that influence the number and types of organisms found on coral islands. This book will acquaint readers with some of the exciting developments in coral reef biology and will provide information that will enable them to assess the status of research in different fields.

  • Au, U, Fe, Mn, Hg, Sb, W, and P Deposits

    • 1 Edición
    • Volumen 7
    • Bozzano G Luisa
    • Inglés
    Handbook of Strata-Bound and Stratiform Ore Deposits, Volume 7: Au, U, Fe, Mn, Hg, Sb, W, and P Deposits focuses on the characteristics, properties, origins, and structures of Au, U, Fe, Mn, Hg, Sb, W, and P deposits. The selection first elaborates on gold in the Proterozoic sediments of South Africa, nature of the Witwatersrand gold-uranium deposits, and origin of Western-States type uranium mineralization. Discussions focus on tectonic conditions, sedimentation, mineralization and alteration, architecture of the Witwatersrand Basin, source of wealth in the Witwatersrand Basin, gold mineralization in South Africa, and ground-rules for gold prospecting. The text then ponders on origin of the Precambrian banded iron-formations, aspects of the sedimentary petrology of cherty iron-formation, and genetic problems and environmental features of volcanosedimentary iron-ore deposits of the Lahn-Dill Type. Concerns cover geological setting, crystallization structures, origin of cherty iron-formations, similarities and differences between banded and oolitic iron-formations, regional geologic distribution, and general diagnostic statement. The manuscript examines sedimentary phosphate deposits, ancient manganese deposits, and freshwater ferromanganese deposits. The selection is a dependable reference for researchers wanting to explore Au, U, Fe, Mn, Hg, Sb, W, and P deposits.

  • The Physical Principles of Rock Magnetism

    • 1 Edición
    • Frank Stacey
    • Inglés
    Developments in Solid Earth Geophysics 5: The Physical Principles of Rock Magnetism explores the physical principles of rock magnetism, with emphasis on the properties of finely divided magnetic materials. It discusses the origin and stability of rock magnetizations, the role of remanent magnetism in interpreting magnetic surveys, magnetic anisotropy as an indicator of rock fabric, and the relationship between piezomagnetic changes and seismic activity. Organized into 13 chapters, this volume discusses the properties of solids, magnetite and hematite grains, and rocks with magnetite grains. It also explains various theories and equations in studying rock magnetism. Different types of magnetization are discussed, including their occurrence, significance, and effects. Some of the types include depositional and chemical remanent and thermoremanent magnetization. In addition, this book explains the thermal activation and Piezomagnetic effects, as well as the reversals of remanent magnetism. This reference contains appendices with tables of relevant functions, such as Langevin Function. This book is a valuable source of information for physicists and geologists.

  • Analytical Geochemistry

    • 1 Edición
    • Volumen 5
    • L Brealey
    • Inglés
    Analytical Geochemistry is the fifth book in the Methods in Geochemistry and Geophysics series. This book serves as an introductory manual, presenting techniques that are frequently required in the analysis of rocks and minerals. After a broad introduction to geochemistry, the book explores qualitative and quantitative chemical analysis. It then focuses on the chemical analysis of the minor elements, such as antimony, arsenic, barium, beryllium, bismuth, boron, bromine, cadmium, carbon, cerium, chlorine, chromium, cobalt, columbium and tantalum, copper, fluorine, gallium, germanium, gold, hydrogen, indium, iodine, iridium, lead, lithium, manganese, mercury, molybdenum, nickel, nitrogen, osmium, oxygen, palladium, platinum, rhenium, rhodium, rubidium and cesium, ruthenium, scandium, selenium and tellurium, silver, strontium, sulfur, thallium, thorium, tin, titanium, tungsten, uranium, vanadium, zinc, and zirconium and hafnium. The remaining chapters of the book illustrate different laboratory instruments, including emission spectrography, flame photometry, X-ray diffraction, fluorimetry, and chromatography. This book serves as a guide for geologists especially those who did not study chemistry as undergraduates.

  • Soil Water Repellency

    Occurrence, Consequences, and Amelioration
    • 1 Edición
    • C.J. Ritsema + 1 más
    • Inglés
    It has become clear that soil water repellency is much more wide-spread than formerly thought. Water repellency has been reported in most continents of the world for varying land uses and climatic conditions. Soil water repellency often leads to severe runoff and erosion, rapid leaching of surface-applied agrichemicals, and losses of water and nutrient availability for crops. At present, no optimum management strategies exist for water repellent soils, focusing on minimizing environmental risks while maintaining crop production. The book starts with a historical overview of water repellency research, followed by seven thematic sections covering 26 research chapters. The first section discusses the origin, the second the assessment, and the third the occurrence and hydrological implications of soil water repellency. The fourth section is devoted to the effect of fire on water repellency, section five deals with the physics and modeling of flow and transport in water repellent soils, section six presents amelioration techniques and farming strategies to combat soil water repellency, and section seven concludes the book with an extensive bibliography on soil water repellency.

  • Land and Stream Salinity : An International Seminar and Workshop Held in November 1980 in Perth Western Australia

    An International Seminar and Workshop Held in November 1980 in Perth Western Australia
    • 1 Edición
    • L.W. Holmes
    • Inglés
    Land and Stream Salinity is a compilation of papers that review the state and knowledge of processes involved in land and stream salinity, and that consider its application in different environments. This book also identifies gaps in research and development, and it designates the priorities that could significantly benefit salinity control. In addition, it identifies alternative strategies of land and water management for salinity control and determines techniques for evaluating quantitatively the alternative strategies. Furthermore, this book focuses on salinity problems in south Western Australia. After discussing the history and effects of salinity in Western Australia, the book considers the influence of plant communities on the hydrology of catchments, and it discusses evapotranspiration rates from wet and dry foliage and soil water deficit. This is followed by the transport of salts in soils and subsoils; the residence times of water and solutes within and below the root zone and saturated zone; analyses of solute distributions in deeply weathered soils; and the transport of salts in catchments and soils. This book also includes chapters on the saline seed development and control in the North American Great Plains, and the terrain, groundwater and secondary salinity in Victoria, Australia. It also presents the hydrologic model, the solute-transport models and their role in the analysis of groundwater, and the hydrosalinity models. The last chapters focus on different kinds of management for salinity control.

  • Ground Freezing

    • 1 Edición
    • Hans L. Jessberger
    • Inglés
    Developments in Geotechnical Engineering Volume 26: Ground Freezing presents the proceedings of the First International Symposium on Ground Freezing, held in Bochum, Germany on March 8-10, 1978. It summarizes progress in the application of the ground freezing technique in geotechnical engineering, with a focus on engineering with frozen soils and related frost research problems. It includes papers that discuss phase transformation of water, thermodynamics, heat and mass transfer, and mathematical models. The laboratory and theoretical studies of thermophysical and mechanical properties are discussed as well. Organized into 43 chapters, this volume begins with an overview of the freezing and thawing of soils, earth, and rock, and the engineering applications of the favorable properties of frozen ground. It then discusses the mechanical properties of artificially frozen soil for construction purposes, the principles of mechanical and thermal behavior of frozen soil, and the design and calculation of frozen soil-structures. Furthermore, it explains the calculation and dimensioning of refrigeration plants and monitoring of frost penetration. The methods and instrumentation for determining the locations of boundaries of frozen soils and the factors affecting the formation of soil cryogenic textures upon artificial active and passive soil freezing are described. The book also details the influence of salts in the pore water in freezing soils and explains how clay microstructure affects the amount of unfrozen water. In addition, it presents the physicomechanical and thermomechanical properties of frozen coarse-grained soil with sandy clay aggregate. This book will be a valuable source of information for scientists and engineers.

  • Geochemical Exploration 1976

    • 1 Edición
    • C.R.M. Butt
    • Inglés
    Geochemical Exploration 1976 is a compilation of 30 papers presented at an International Geochemical Exploration Symposium. The first five papers included in this journal are entitled World Mineral Supplies-the Role of Exploration Geochemistry; Application of Gold Compositional Analyses to Mineral Exploration in the United States; Tellurium, a Guide to Mineral Deposits; Geochemical Prospecting for Volcanogenic Sulfide Deposits in the Eastern Black Sea Ore Province, Turkey; Anomalous Trace Elements in Pyrite in the Vicinity of Mineralized Zones a Woodlawn, N.S.W., Australia; and Application of Lead Isotopes and Trace Elements to Mapping Black Shales Around a Base Metal Sulfide Deposit. Other papers included in this volume are about primary dispersion; sulfur isotope and trace metal composition of stratiform; geochemistry of the mammoth copper deposit; geochemical indications of concealed copper mineralization; Zinc-Lead-Silver deposit; and geochemical dispersion patterns. The book also discusses sulfide mineralization, serpentinites containing nickel iron sulfides, geochemical analytical techniques in determining ""total"" compositions of some lateritized rocks, natural gamma radiation, Uranium, Uranium isotopes, and soil hydrocarbon geochemistry. The last three papers presented in this volume are entitled Detection of Naturally Heavy-Metal-Poisoned Areas by LANDSAT-1 Digital Data; Recognition of Mineralized Areas by a Regional Geochemical Survey of the Till Blanket in Northern Finland; and Sequential Soil Analysis in Exploration Geochemistry.

  • Comminution 1994

    • 1 Edición
    • K.S.E. Forssberg + 1 más
    • Inglés
    This publication is the result of the 8th European Conference on Comminution. Containing many significant contributions concerning the topic of Comminution, the book gives the reader a vital insight into the subject.

  • W-Sn Skarn Deposits

    and Related Metamorphic Skarns and Granitoids
    • 1 Edición
    • Volumen 24
    • T.A.P. Kwak
    • Inglés
    Intended as a reference for the academically-oriente... geologist as well as the practising economic geologist, this book is concerned with the study of skarn deposits having anomalously high tin or tungsten contents, or both. Unlike many other books on economic geology, both economic W-Sn skarns and non-economic examples are covered, in order to enable the academically-oriente... reader to grasp the full range of such deposits, and also to aid the economic geologist in distinguishing between W-Sn skarns having economic potential and those which do not.W-Sn skarns are notoriously complex, containing a wide range of textures, grain sizes, mineral assemblages, bulk compositions and structures. The lack of a sufficiently detailed data base, coupled with some unsupportable genetic models, has led to many misunderstandings and has often resulted in needless expenditure and effort on fruitless mineral exploration. Thus, the first aim of this book is simply to provide an adequate data base with sufficient references to enable an interested worker to define a skarn deposit and know where to find additional information on similar examples. To aid this, as much data as possible is presented as tables and diagrams.The second aim of the book is to show the reader how to separate skarn rocks found in W-Sn-bearing environments into those produced by metamorphic, isochemical processes (metamorphic skarns) which are uneconomic, and those produced by the introduction and exchange of components from an ore solution (ore skarn). W-Sn skarns are also separated into genetically logical subdivisions so that, if a deposit or a specific geological environment can be identified, then skarn zonation or the potential of finding specific skarn types can be predicted. This is particularly important to the practising exploration geologist because often only a small part of a skarn or only certain skarn types contain economic mineralization.In addition, the book provides an insight into how to assess where mineralogical complications may occur, especially with respect to Sn-skarns, and in which environments such complications may be expected. It also provides enough information for the reader to be able to conceptualize suitable models for W-Sn skarns based on primary data.

  • Semimetals

    1. Graphite and its Compounds
    • 1 Edición
    • N.B. Brandt + 2 más
    • Inglés
    ``Semimetals'' presents, for the first time in the literature, a consistent and unifying treatment of semimetals (As, Bi, Sb, Bi-Sb alloys, graphite and its compounds). It describes their structural features and their electric, magnetic, galvanomagnetic, thermoelectric, optical, magneto-optical, acoustic, thermal, and mechanical properties on the basis of modern concepts of the electron and phonon energy spectra.The book discusses in detail the character of the changes in the energy spectrum and properties of semimetals due to temperature variations, application of a magnetic field, pressure, anisotropic strain, doping by donor, acceptor and neutral impurities, which indicate how the above properties may be altered and how materials with preassigned parameters can be produced. Furthermore, it discusses specific phenomena associated with low dimensionality and the very low carrier density, such as quantum oscillations and magnetoplasma behaviour.

  • Biogeomorphology, Terrestrial and Freshwater Systems

    • 1 Edición
    • C.R. Hupp + 2 más
    • Inglés
    Biogeomorphology, a relatively new term, refers to relations between the biota and geomorphic form and process. Ecology is the study of organisms in relation to their physical and biotic environment. Thus, ecogeomorphology could have been an equally acceptable name for this publication which stresses the ecological aspects of the larger field of biology. Most of the articles relate vegetation to fluvial geomorphology, erosion, and sedimentation. However, articles showing the significance of animal ecological studies and their bearing on geomorphic form and process are also included.Geographica... the papers range from arid areas in the American Southwest and Israel to the new world tropics. Most articles, however, are concerned with temperate areas of North America and Western Europe.This is among the first books to approach the role that biota and ecology play in geomorphic processes and should be on the shelf of every landscape ecologist.

  • Soil Properties and Behaviour

    • 1 Edición
    • R. Young
    • Inglés
    Soil Properties and Behavior defines the structure of the soil-water system. This book provides the background of the nature of mineral particles and the existing forces between the particles in the soil system. It also examines the structure and fabric of soil, as well as their relationship with water. Furthermore, the book explores water movement and soil performance, which are related to the physics of soil-water movement and volume changes. This book illustrates the common clay minerals in soils and discusses the methods for their identification. It also reviews the theory of one-dimensional consolidation and discusses the soil structure in consolidation and compression. The book also presents the concepts of yield and failure in soils, yield criteria, and failure theories. It also focuses on granular and cohesive soil strength, including friction properties, the intrinsic friction angle, the volumetric strain, and pore-water pressure. The last part of the book discusses soil freezing and permafrost.

  • Cu, Zn, Pb, and Ag Deposits

    • 1 Edición
    • Volumen 6
    • Bozzano G Luisa
    • Inglés
    Handbook of Strata-Bound and Stratiform Ore Deposits, Volume 6: Cu, Zn, Pb, and Ag Deposits focuses on the characteristics, properties, origins, and structures of Cu, Zn, Pb, and Ag deposits. The selection first underscores a comparative review of the genesis of the copper-lead sandstone-type deposits; "volcanic" massive sulfide deposits and their host rocks; and tectonic setting of some strata-bound massive sulfide deposits in New South Wales, Australia. Discussions focus on tectonic setting of Cyprus-type and Kuroko-type strata-bound massive sulfide deposits; development of some tectonic units in which strata-bound massive sulfide deposits occur in the Paleozoic sequences of New South Wales; volcanic host rocks; and interim summary of field and laboratory data. The text then ponders on Caledonian massive sulfide deposits in Scandinavia, Precambrian, strata-bound, massive Cu-Zn-Pb sulfide ores of North America, and geology of the Zambian Copperbelt. Concerns cover types of orebodies, structures of the Zambian Copperbelt, geology of representative deposits, general geological features, and lithostratigraphical relations of the ores. The manuscript takes a look at the McArthur zinc-lead-silver deposits, Appalachian zinc-lead deposits, and tri-state ore deposits. The selection is a dependable source of data for researchers wanting to study Cu, Zn, Pb, and Ag deposits.

  • Man's Impact on Climate

    • 1 Edición
    • Wilfred Bach
    • Inglés
    Man’s Impact on Climate provides a technical review of various aspects of climate change. It deals not only with the general aspects of climate change but also with the climate/food and climate/energy interactions. This book is divided into three parts. The first part explores climate history, climate theory, and climate modeling. This part also offers climate models in which results from past climate events can be verified with paleoclimatic methods; hence, they serve as guides for interpreting future climate simulations. The second part deals with the external causes of climate change that are induced by man, such as altering the composition of the atmosphere, adding heat to the system and changing the characteristics of the earth’s surface. The third and last part focuses on the future climate and potential consequences of climatic changes. It also offers a few constructive solutions in reference to the carbon dioxide problem. Scientists and government officials involved in climate research may find this book valuable.

  • Supergene and Surficial Ore Deposits

    Textures and Fabrics
    • 1 Edición
    • Volumen 3
    • Bozzano G Luisa
    • Inglés
    Supergene and Surficial Ore Deposits; Textures and Fabrics is a collection of papers that deals with economic geological deposits, particularly as endogenic type, or as an integral part of their geological environment. One paper explores the possibility that the evolution of ores of sedimentary affiliation or of sedimentary rocks and their chemistry during geologic history can be a product of the evolution of the outer spheres of the earth combined with a cycling phenomena that proceeds in a spiral way. Another paper discusses the role of climate on a large range of depositional environments through mobilization, both by chemical and physical events, of metal-ions. Mobilization can also occur by controlled deposition and enrichment of the "mobilized" ions in a certain sedimentary environment. Various depositions occur in different climates, for example, bauxites, requiring higher precipitation levels, form in humid zones. One paper points that ore-mineral accumulations controlled by descending supergene solutions play a significant role in ore-mineral depositions. The collection is beneficial to geologists, industrial chemists, researchers, technical designers, and engineers whose works are related with ore deposits and mining.

  • Styles Of Folding

    Mechanics And Mechanisms Of Folding Of Natural Elastic Materials
    • 1 Edición
    • Arvind Johnson
    • Inglés
    Styles of Folding: Mechanics and Mechanisms of Folding of Natural Elastic Materials, Developments in Geotectonics 11, provides an introduction to theoretical underpinnings of folds in rocks. The book begins with a review of studies which have been most significant to the development of current understanding of folds. It then turns to the development of a theory of folding of multilayered elastic materials. It presents the derivation of linearized equations that describe the incremental deformation of materials with memory; these equations are then used to solve for wavelengths of sinusoidal folds in single layers and multilayers. A theory of kink folding in elastic multilayers is introduced based on the mechanism of plastic yielding between layers. The chapters also include analyses of folds in the Carmel Formation at Arches National Monument in Utah; asymmetric folds in interbedded cherts and shales of the Franciscan Complex; and some folds in Tertiary rocks in the Coast Ranges of California. Finally, the most important mechanisms of folding recognized thus far are summarized for multilayered materials with a wide range of properties.

  • Slope Analysis

    • 1 Edición
    • R Chowdury
    • Inglés
    Slope Analysis summarizes the fundamental principles of slope analysis. It explores not only the similarities but also the differences in rock slopes and soil slopes, and it presents alternative methods of analysis, new concepts, and new approaches to analysis. The book introduces both natural and man-made slopes, the nature of soils and rocks, geomorphology, geology, and the aims of slope analysis. These topics are followed by chapters about stress and strain, shear strength of rock and soils, and progressive failure of slopes. This book also presents limit equilibrium methods I and II, which are the planar failure surfaces and slip surfaces of arbitrary shape, respectively. It also includes stress analysis and slope stability, natural slope analysis, and a brief review on plasticity and shear band analysis. Before presenting its conclusions, the book discusses special aspects of slope analysis, such as earthquake analysis, pseudo-static analysis, dynamic analysis, and anisotropy, in addition to Newmark’s approach.

  • Tree Rings and Climate

    • 1 Edición
    • H Fritts
    • Inglés
    Tree Rings and Climate deals with the principles of dendrochronology, with emphasis on tree-ring studies involving climate-related problems. This book looks at the spatial and temporal variations in tree-ring growth and how they can be used to reconstruct past climate. Factors and conditions that appear most relevant to tree-ring research are highlighted. Comprised of nine chapters, this book opens with an overview of the basic biological facts and principles of tree growth, as well as the most important terms, principles, and concepts of dendrochronology. The discussion then shifts to the basic biology governing the response of ring width to variation in climate; systematic variations in the width and cell structure of annual tree rings; and the significance of tree growth and structure to dendroclimatology. The movement of materials and internal water relations of trees are also considered, along with photosynthesis, respiration, and the climatic and environmental system. Models of the growth-climate relationships as well as the basic statistics and methods of analysis of these relationships are described. The final chapter includes a general discussion of dendroclimatographic data and presents examples of statistical models that are useful for reconstructing spatial variations in climate. This monograph will be of interest to climatologists, college students, and practitioners in fields such as botany, archaeology, hydrology, oceanography, biology, physiology, forestry, and geophysics.

  • Geostatistical Ore Reserve Estimation

    • 1 Edición
    • M. David
    • Inglés
    Developments in Geomathematics, 2: Geostatistical Ore Reserve Estimation focuses on the methodologies, processes, and principles involved in geostatistical ore reserve estimation, including the use of variogram, sampling, theoretical models, and variances and covariances. The publication first takes a look at elementary statistical theory and applications; contribution of distributions to mineral reserves problems; and evaluation of methods used in ore reserve calculations. Concerns cover estimation problems during a mine life, origin and credentials of geostatistics, precision of a sampling campaign and prediction of the effect of further sampling, exercises on grade-tonnage curves, theoretical models of distributions, and computational remarks on variances and covariances. The text then examines variogram and the practice of variogram modeling. Discussions focus on solving problems in one dimension, linear combinations and average values, theoretical models of isotropic variograms, the variogram as a geological features descriptor, and the variogram as the fundamental function in error computations. The manuscript ponders on statistical problems in sample preparation, orebody modeling, grade-tonnage curves, ore-waste selection, and planning problems, the practice of kriging, and the effective computation of block variances. The text is a valuable source of data for researchers interested in geostatistical ore reserve estimation.

  • Classifications and Historical Studies

    • 1 Edición
    • Bozzano G Luisa
    • Inglés
    Classifications and Historical Studies is a collection of papers dealing with theoretical and applied ore petrology. One paper discusses the use of conceptual models in geology such as the diagrammatic/pictori... the flow-chart, and the tabular types of conceptualizations. Another paper describes some transitional types of mineral deposits in volcanic and sedimentary rocks. Concentrations of copper minerals and commonly associated metals form deposits associated with orogenic belts and cratonic regions. The paper points out that many major groups of mineral deposits grade into other groups through occurrences with intermediate or transitional characteristics. It suggests a classification method of mineral deposits based on the observable features of the mineral deposits rather than their inferred genesis. One paper reviews the theory of magmatic—hydrotherma... replacement origin of stratiform sulfide ore bodies. The review covers concepts of certain major ore deposits as being independent and isolated phenomena to regarding a wide range of deposits as contemporaneous, indigenous, and related to their environments. Another paper points out that according to North American geologists, certain types of ore deposits are formed syngenetically and are subjected to the same metamorphic events that affect the ores in which they are enclosed. The collection can be valuable to researchers, technical designers, or engineers whose works are related with oil refinery and fossil fuels, as well as to students majoring in geology.

  • Anatomy of Seismograms

    For the IASPEI/Unesco Working Group on Manual of Seismogram Interpretation
    • 1 Edición
    • O. Kulhánek
    • Inglés
    Frequent updating of existing interpretation codes and routines is a prerequisite for modern seismogram interpretation and research. The primary goal of this book is to present in a rather tutorial form all the necessary information and techniques pertinent to essential seismogram interpretation. The treatment is descriptive rather then mathematical, and emphasis is placed on practical aspects, especially for the benefit of students and junior seismogram interpreters affiliated to seismographic stations and observatories. Those workers more knowledgeable in seismology, and curious enough in the detailed deciphering of seismogram peculiarities, will also find the presentation useful.The book is divided into two parts: a verbal description (Chapters 1-6) and a collection of 55 plates (Chapter 7) with interpretations. The verbal description explains in a rather elementary form the most fundamental physical phenomena relevant to seismogram appearance. The collection of plates exhibits a large variety of seismogram examples, and the corresponding interpretations cover different seismic sources (tectonic and volcanic earthquakes, underground explosions, cavity collapse, sonic booms), wave types, epicentral distances, focal depths and recording instruments (analog, digital, short- and long-period, broad band).The book compliments older manuals in that both analog and digital records are considered. Seismograms from more traditional narrow-band as well as from modern, broad-band instruments are displayed. Tectonic and volcanic earthquakes are represented, and the exhibited seismograms form a worldwide collection of records acquired from seismographic stations located in North and Central America, Asia, Europe and New Zealand, i.e. in various geological and tectonic environments. Terminology and usage of definition does vary among agencies in different parts of the world; that used in this book is common to Europe.

  • Techniques for Image Processing and Classifications in Remote Sensing

    • 1 Edición
    • Robert A. Schowengerdt
    • Inglés
    Techniques for Image Processing and Classifications in Remote Sensing provides an introduction to the fundamentals of computer image processing and classification (commonly called ""pattern recognition"" in other applications). The book begins with a discussion of digital scanners and imagery, and two key mathematical concepts for image processing and classification—spati... filtering and statistical pattern recognition. This is followed by separate chapters on image processing and classification techniques that are widely used in the remote sensing community. The emphasis throughout is on techniques that assist in the analysis of images, not particular applications of these techniques. The book also has four appendixes, featuring a bibliography; an introduction to computer binary data representation and image data formats; a discussion of interactive image processing; and a selection of exam questions from the Image Processing Laboratory course at the University of Arizona. This book is intended for use as either a primary source in an introductory image processing course or as a supplementary text in an intermediate-level remote sensing course. The academic level addressed is upper-division undergraduate or beginning graduate, and familiarity with calculus and basic vector and matrix concepts is assumed.

  • The Pocos de Caldas Project: Natural Analogues of Processes in a Radioactive Waste Repository

    • 1 Edición
    • N.A. Chapman + 3 más
    • Inglés
    The safe disposal of radioactive wastes by burial in deep geological formations requires long-term predictions of the future behaviour of the wastes and their engineered repository. Such predictions can be tested by evaluating processes analogous to those which will occur in a repository, which have been long active in the natural geochemical environment. The Pocos de Caldas Project is a comprehensive study of two ore deposits in Minas Gerais, Brazil, aimed at looking at uranium and thorium series radionuclide and rare-earth element mobility, the development and movement of redox fronts, and the nature of natural groundwater colloids. A multidisciplinary team of experts from 27 laboratories carried out a fully integrated study of the geology, geomorphology, hydrogeology, geochemistry, hydrochemistry and geomicrobiology of the two sites for nearly four years. This book contains 20 papers covering the detailed findings, with particular emphasis on their significance for radioactive waste disposal, especially on the use of the data in testing models of radionuclide movement. It will interest economic geologists, geochemists and performance assessment modellers involved in the geological disposal of radioactive wastes.

  • Design of Underground Hard-Coal Mines

    • 1 Edición
    • Volumen 3
    • J. Pazdziora
    • Inglés
    The escalating worldwide demand for energy has had the effect, among other things, of promoting the development of coal mining. In some countries specialist design offices were set up and students trained as specialists in mine design and construction. Poland, a country having mining traditions stretching over many centuries, is a good example, and has gained a place in the forefront, not only as a coal producer and exporter, but also as an originator and exporter of technical mining know-how. The author of this book has himself had 25 years of practical experience in mine design, in the supervision of mining investment implementation both at home and abroad, and also in directing the activities of the Chief Mine Design and Studies Office in Poland, plus more than 20 years' teaching experience in the training of mining engineers, in particular as head of the Mine Design Department of the Mining Faculty at the Silesian Polytechnic University in Gliwice. This vast wealth of experience has prompted him to write the present book which discusses the basic problems met with in the design of underground hard-coal mines.The author's primary aim has been to deal with all those questions in mine design which have not yet been answered in mining textbooks and which, from his own personal experience, he considers to be of importance. Accordingly, he presents the general principles governing the design of new mines and the reconstruction of working mines, the development of mining regions, the design of coal-preparation plant, and energy economy in mines. Making use of the broad experience gained by the Polish mining industry in the implementation of mining investment projects, he has quoted several examples of technical and organizational solutions which effectively shorten the mine construction cycle.The book is addressed chiefly to investors and engineers engaged in preparing plans for the development of mining regions, for the construction of new mines, and the reconstruction of existing mines and preparation plants, as well as to students in mining departments of technical schools and universities. The information offered here is of great practical value and may well stimulate the development of new ideas for design and implementation concepts.

  • Biology and Geology of Coral Reefs V2

    Biology 1
    • 1 Edición
    • O.A. Jones
    • Inglés
    Biology and Geology of Coral Reefs, Volume II: Biology 1 discusses the major advances made in the biological aspects of coral reef problems. This book is organized into 12 chapters that cover the microbial aspects of coral reefs, the nutrition in corals, and diversity in coral reefs. The opening chapters describe the distribution and role of coral reef microorganisms, as well as the significance of bacterioplankton as a food source for the marine fauna of coral reefs. The following chapter discusses the occurrence of algae in coral reef, their competition with corals for space, and their role in reef construction. Other chapters deal with food and feeding mechanisms of corals, the role of marine antibiotics in coral reef ecology, and some chemical compounds isolated from coral reef organisms, providing evidence for marine pharmacologic activity in coral reef areas. The book also discusses some basic problems relating to the distribution and abundance of hermatypic corals on reefs. It then examines species diversity on coral reefs, variety of reef structure, and the important role of toxic materials produced by holothurians on the general ecology and physiology of coral reefs. The last chapters describe the development, feeding, and behavior of the larval stages of several coral reef asteroids. Particular emphasis is given to the larval and post-larval stages of the crown-of-thorns starfish, Acanthaster planci. The starfish population explosions, the devastating effects on the hard coral cover of coral reefs, and causes and control of population explosions are also covered. This volume will acquaint readers with some of the exciting developments in coral reef biology and will provide information that will enable them to assess the status of research in different fields.

  • Granite Landforms

    • 1 Edición
    • C.R. Twidale
    • Inglés
    Granite Landforms provides a systematic, coherent, and comprehensive account and analysis of granite landforms. It examines granite forms and their genesis; the morphology of granite exposures; the nature of the materials from which granitic rocks have evolved; and the weathering processes near the Earth’s surface. It also describes major landforms and assemblages, as well as the minor features that have evolved on the major hosts. Organized into four parts encompassing 12 chapters, this book begins with an overview of granite, including their characteristics, occurrences, and composition. It then discusses the factors that influence the weathering of granitic rocks and considers boulders and inselbergs, the all-slopes topography in granite, granite plains and rock basins, granite forms associated with steep slopes, and scarp foot depressions. The reader is also introduced to the piedmont angle, grooves or flutings, caves and tafoni, split rocks, cracked blocks and plates, and the role of climate in the development of landforms on granitic outcrops. Geologists, geomorphologists, geology students, and anyone interested in geology will find this book extremely useful.

  • Regional Studies

    • 1 Edición
    • Volumen 5
    • Bozzano G Luisa
    • Inglés
    Regional Studies is a collection of papers that deals with strata-bound mineral deposits in the Eastern Alps, in the Canadian Cordillera, in north-central, and southwest England. Other papers describe southern African stratiform ore deposits and the genesis of Irish base-metal deposits. One paper compares the various types of volcanogenic mineral deposits and their depositional environments characterized by distinct assemblages of volcanic rocks, which formed in the Northern Appalachians during certain episodes of the tectonic evolution. The paper notes that the youngest volcanogenic deposits of economic interest are tungsten—molybdenum—... base metal deposits in highly altered rhyolitic sub-volcanic complexes at Mount Pleasant, New Brunswick. Another paper reviews the mineral occurrences in southern Africa that include stratiform, non-magmatic, ore deposits, The paper considers a subdivision of deposits formed from surficial chemical processes during previous (or current) cycles of weathering and erosion. Many ore bodies have a dual origin: for example, the iron in the high-grade hematite deposits is partly syngenetic and partly epigenetic. The paper also illustrates the time-dependence of some stratiform ore deposits in southern Africa in a schematic diagram. Geologists, researchers, or engineers whose works are related with ore deposits and mining will benefit tremendously from the collection.

  • Engineering Geology

    • 1 Edición
    • Q Zaruba
    • Inglés
    Engineering Geology attempts to provide an understanding of relations between the geology of a building site and the engineering structure. It presents examples taken from real-life experience and practice to provide evidence for the significance of engineering geology in planning, design, construction, and maintenance of engineering structures. The book begins with an introduction of geological investigations, distinguishing between the reconnaissance investigation, the detailed investigation, and investigation during construction. It then explains the significance of geological maps and sections; the mechanical behavior of rocks; subsurface investigation for engineering construction; and geophysical methods. The remaining chapters discuss the physical and chemical weathering of rocks; slope movements; and geological investigations for buildings, roads and railways, tunnels, and hydraulic structures. This book is intended particularly for civil engineering students and students of engineering geology in the university faculties of natural sciences. It describes geological features so as to be comprehensible to Technical College students and to explain construction problems intelligibly for geology students. The book will also be of assistance to planners, civil engineers, and graduate engineering geologists.

  • Variational Methods in Geosciences

    • 1 Edición
    • Y.K. Sasaki
    • Inglés
    The last few decades have seen a spectacular growth in the use of variational methods, one of the most classic and elegant methods in physical and mathematical sciences, as powerful tools of optimization and numerical analysis.The tremendous accumulation of information on the use of variational methods in the area of the geosciences, which includes meteorology, oceanography, hydrology, geophysics and seismology, indicated the need for the first symposium on Variational Methods in Geosciences to be organized and held in Norman on October 15-17, 1985. The value of this symposium was enhanced by the number of stimulating and informative papers presented.

  • Bibliography and Ore Occurrence Data

    Indexes Volumes 8-10
    • 1 Edición
    • Bozzano G Luisa
    • Inglés
    Handbook of Strata-Bound and Stratiform Ore Deposits, Volume 10: Bibliography and Ore Occurrence Data Indexes, Volumes 8-10 focuses on bibliography and ore occurrence data indexes. The selection first elaborates on the supplementary bibliography of strata-bound and stratiform ore deposits from 1974-1978, including information on antimony, bismuth, chromium, climatology, copper, diffusion, fluid inclusions, fluorite, isotopes, lead-zinc, lithium, magnesite, and manganese. Also mentioned are metallogeny, metamorphism, placers, red beads, sulfides, uranium, and vanadium. The book also presents data on the worldwide distribution of stratiform and strata-bound ore deposits, as well as data sources and reliability, maps of North and South America, Europe, Asia, Australia and western Pacific, and Africa. The text offers information on references index part III and subject index part III. The selection is a valuable source of data for researchers wanting to explore ore deposits.

  • Solvent Extraction 1990

    • 1 Edición
    • Volumen 7B
    • T. Sekine + 1 más
    • Inglés
    Solvent extraction is employed very widely in both fundamental research and technology because of the remarkable features of this simple but very effective technique for the separation of different materials. The International Solvent Extraction Conference 1990 was a forum for the presentation of papers on up-to-date research in this field. The collection of the papers in these volumes will be invaluable because information on solvent extraction is often scattered in various journals and proceedings which make the following of developments difficult.

  • Biogeochemistry

    An Analysis of Global Change
    • 1 Edición
    • William H. Schlesinger
    • Inglés
    Biogeochemistry: An Analysis of Global Change deals with changes in the biogeochemistry of the Earth's surface. The book covers the basics about the effect of life on the chemistry of the Earth, with emphasis on the microbial and chemical reactions that occur on land, in the sea, and in the atmosphere. Computer models are used to help understand elemental cycling and ecosystem function. This book is divided into two sections and comprised of 14 chapters. The discussion begins with an overview of the chemical processes controlling the environment in which we live. A simple model for the biogeochemistry of the Earth's surface is described. The chapters that follow examine models that astrophysicists suggest for the origin of chemical elements, as well as models for the formation of the solar system and the planets. The biogeochemical reactions in the atmosphere, lithosphere, and terrestrial biosphere are also described, along with rock weathering on land and the processes that drive the weathering reactions. The reader is introduced to biogeochemical cycling on land; biogeochemistry in freshwater wetlands and lakes, rivers and estuaries, and the sea; and the global water, carbon, sulfur, nitrogen, and phosphorus cycles. The book concludes with the argument that human population growth is the basis of every major environmental issue facing the world today. This book is intended as a textbook for college-level and graduate students who are interested in global change.

  • Laterite Soil Engineering

    Pedogenesis and Engineering Principles
    • 1 Edición
    • M Gidigasu
    • Inglés
    Laterite Soil Engineering is one of a few books about solving engineering problems with the help of engineering pedology. This book presents the latest information on the laterite soils’ geotechnical characteristics and engineering behavior. It shows that laterite soils are different from natural soils and that most laterite soils can be evaluated for engineering purposes using accepted theories and well-known test procedures for temperate-zone soils. This book also shows that modern concepts based on pedological considerations are very useful and take a logical approach to the identification and evaluation of laterite soils for engineering purposes. The first four chapters focus on reviewing information about the processes of tropical weathering and laterization. Chapter five summarizes information about the location, morphology and composition of laterite soils. Chapter six highlights the geotechnical implications of the pedogenic processes of tropical weathering, and it emphasizes the contribution of the results of these pedogenic processes to the deviations of engineering behavior of the problem of laterite soils. In addition, chapter seven discusses the influence of laterite soil genesis on the physic-chemical characteristics based on comparing the properties of three genetic soil groups formed under three different weathering conditions. Chapters eight through nineteen discuss the geotechnical characteristics and evaluation of laterite soils, and the effects of pedogenesis and soil-forming factors on the geotechnical and stabilization characteristics of laterite soils. The last chapter discusses the little information that exists on the application of laterite soils in engineering problems.

  • Reclamation, Treatment and Utilization of Coal Mining Wastes

    • 1 Edición
    • A.K.M. Rainbow
    • Inglés
    Destined to become a major reference work, this book presents a wide range of specialist papers on the exploitation of coal mining wastes (minestone). Up-to-date developments and research results are reported from all over the world, providing a wealth of information for civil and mining engineers, environmentalists, and land reclamation specialists.

  • Platinum-Group Element Exploration

    • 1 Edición
    • Volumen 26
    • D.L. Buchanan
    • Inglés
    The platinum-group elements (PGE) include platinum, palladium, rhodium, ruthenium, iridium and osmium. They are currently receiving world-wide attention as an attractive exploration target because they offer the dual attraction of rare, high value precious metals as well as major industrial applications. Platinum has aesthetic qualities, combined with a permanent lustre, which encourage its use in the manufacture of jewellery and, like gold, it also finds an investment role. Platinum, rhodium and palladium have important applications as catalysts, enabling petroleum and other fuels and chemicals to be produced efficiently from crude oil. This book gives a practical set of guidelines for implementing a programme of PGE exploration, detecting subtle indications of mineralization and assessing the economic potential of a group of mafic or ultramafic rocks. Background material is given on the economic and geological framework of the PGE in the first chapter, while theoretical aspects of magma chemistry are covered in the next three. Chapters 5 and 6 review current world-wide exploration activity within the context of available reserves of PGE, and in Chapter 7 factors which need to be considered in exploration for new deposits are outlined. The last chapter discusses evaluation guidelines.As the PGE are both costly and almost indestructible they are normally recycled; nevertheless, a substantial annual input of new metal is needed to replace process losses, to permit increases in capacity in the dependent industries and to provide for new uses. For example, a major new market for platinum will be created if the European Community countries are required to fit catalytic converters to new cars. At present, South Africa and the USSR are the sources of most of the western world's newly mined PGE, with virtually all the South African production derived from the Bushveld Complex. Much of the material presented in this book is based on the author's experience of these rocks, and emphasis is given to the dominant role played by magmatic sulphides as potent collectors of PGE. Consumers of minerals and metals, however, prefer to have a diversity of supply and a new PGE producer is therefore likely to attract a ready market.Not only does the book provide a wealth of practical information for mining geologists, it also contains much of interest to those in natural resource management and investment.

  • Regional and Specific Deposits

    • 1 Edición
    • Volumen 9
    • Bozzano G Luisa
    • Inglés
    Handbook of Strata-Bound and Stratiform Ore Deposits, Volume 9: Regional and Specific Deposits focuses on the processes, methodologies, principles, and approaches involved in the identification of regional and specific ore deposits. The selection first elaborates on the timing of mineralization in stratiform copper deposits, oolitic iron formations, and metalliferous deep-sea sediments. Discussions focus on marine distribution and nature of surface and near-surface deposits, structural setting and associated deposits, principal types of deep-sea metal-enriched sediments, chronological development of oolitic-inland-sea iron formation, and complementary sources and transport mechanisms. The text then tackles heavy-metal accumulation in limnic sediments, trace metals in fresh waters, nature and origin of Archaean strata-bound volcanic associated nickel-iron-copper sulphide deposits, and the significance of pyritic black shales in the genesis of Archean nickel sulphide deposits. Topics include lithological associations, oxidation and supergene alteration of ores, temporal and tectonic setting, dissolved metal concentrations in large freshwater systems, and transport phases of heavy metals in river water. The publication examines strata-bound tin deposits, geology of the Pine Point lead-zinc district, and genesis of the Rammelsberg ore deposit near Goslar/Upper Harz in the Federal Republic of Germany. The selection is a valuable reference for researchers wanting to explore ore deposits.

  • Underground Mining Methods and Technology

    • 1 Edición
    • Volumen 1
    • A.B. Szwilski + 1 más
    • Inglés
    This book contains high-quality papers from the principal mining research institutes of the USA, United Kingdom, India and South Africa, thus providing up-to-date coverage of underground mining and technology in the main mining areas of the world. The theme is mining in adverse conditions using state-of-the-art technology. A wide range of problems facing mining engineers is discussed, namely: thick seam working, mining under massive beds, highly productive room and pillar operations, water problems, ventilation, and electronics in longwall mining.

  • Reservoir Characterization II

    • 1 Edición
    • Lake
    • Inglés
    Reservoir Characterization II contains the proceedings of the Second International Reservoir Characterization Conference held in Dallas, Texas in June 1989. Contributors focus on the characterization of reservoir processes and cover topics ranging from surface roughness in porous media and reservoir characterization at the mesoscopic scale to shale clast heterogeneities and their effect on fluid flow, permeability patterns in fluvial sandstones, and reservoir management using 3-D seismic data. This book is organized into six sections encompassing 43 chapters. The first 20 chapters deal with reservoir characterization at the microscopic, mesoscopic, and macroscopic scales. Topics include low-contrast resistivity sandstone formations; the use of centrifuge and computer tomography to quantify saturation distribution and capillary pressures; and cross-well seismology as a tool for reservoir geophysics. The chapters that follow deal with reservoir characterization at the megascopic scale; fractal heterogeneity of clastic reservoirs; heterogeneity and effective permeability of porous rocks; and drilling fluid design based on reservoir characterization. A chapter that outlines a procedure for estimating permeability anisotropy with a minipermeameter concludes the book. This book is a valuable resource for students and practitioners of petroleum engineering, geology and geological engineering, petroleum exploration, and geophysics.

  • Foundations on Expansive Soils

    • 1 Edición
    • Fu Hua Chen
    • Inglés
    Foundations on Expansive Soils provides the practicing engineer with a summary of the state-of-the-art of expansive soils and practical solutions based on the author's experience. The book is organized into two parts. Part I deals with theory and practice, and summarizes some of the theoretical physical properties of expansive soils. It also discusses various techniques employed to found structures on expansive soils such as drilled pier foundation, mat foundation, moisture control, soil replacement, and chemical stabilization. Topics covered include the origin, mineralogical composition, and the basic structure of expansive soils; the migration of water, swelling potential, and swelling pressure; site investigations and laboratory testing; moisture control; and soil stabilization. Part II presents case studies on the following: distress caused by pier uplift; distress caused by the improper design and construction of a drilled pier foundation system; distress caused by heaving of footing pad and floor slab; distress caused by heaving of continuous footings; and distress caused by a rise of ground water.

  • Geochemical Studies

    • 1 Edición
    • Volumen 2
    • Bozzano G Luisa
    • Inglés
    Geochemical Studies is a collection of papers dealing with ore petrology, particularly on the genesis of ores found in sediments. One paper describes the minor elements in metal deposits in sedimentary rocks, focusing on geochemical work on certain classes of ores in sediments and on the theories of origin of the deposits. With better techniques of microprobe analysis of trace elements, the paper notes that ore deposits in sedimentary rocks can be characterized by their minor element suites. One paper points out that large ore deposits cannot possibly be formed by a migration of substances (known as "negative" diffusion). The paper estimates that the quantities of material that can be accumulated in a sediment horizon with a great affinity for these materials, say in a period of one billion years, will still not be sufficient to produce a large ore deposit. The paper estimates the necessary diffusion coefficients that occur in deep structures, where increased mobilities of various substances occur. Geologists, geochemists, and engineers working with fossil fuels will find the collection highly significant.

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