Advances in Physical Geochemistry (majalah). PDF Download

Author: Surendra Kumar Saxena
Publisher:
ISBN:
Category : Chemistry, Physical and theoretical
Languages : en
Pages :

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Languages : en
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Author: P.M. Bell
Publisher: Springer
ISBN:
Category : Science
Languages : en
Pages : 378

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The second volume of this series consists of three parts. Part I focuses on the research on intracrystalline reactions. This work, which began nearly two decades ago, is critically reviewed by Ghose and Ganguly in Chapter 1. Besides the review, the authors include some of their previously unpublished work to demonstrate how future research could aid in obtaining data on thermodynamics of solid solutions and in understanding the cooling history of igneous and metamorphic rocks. The latter is also the theme adopted by Kretz in the second chapter, which examines the redistribution of Fe and Mg in coexisting silicates during cooling. Chapter 3 contains new data on Fe-Mg distribution in clinopyroxenes. Dal Negro and his co-authors have selected a series of clinopyroxenes from volcanic rocks and present site occupancy data on several clinopyroxenes of intermediate compositions. The data set has not been published before and is the first of its kind. Part II of this book begins with a chapter on melts by Gaskell, who explores the relationship between density and structure of silicate melts. This is followed by the synthesis of data generated in the U.S.S.R. by Shmulovich and his co-authors on fluids. Blencoe, Merkel and Seil present a thorough analysis of the phase equilibrium data on feldspars coexisting with fluids in the third chapter in this part.

Author: Jibamitra Ganguly
Publisher: Springer
ISBN:
Category : Science
Languages : en
Pages : 594

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One of the fundamental objectives of physical geochemistry is to understand the evolution of geochemical systems from microscopic to regional and global scales. At present there seems to be a general recognition of the fact that internal properties of minerals record important aspects of the evolutionary history of their host rocks which may be unraveled by very fine scale observations. A major focus in the development of geochemical research in the last thirty years has been the application of classical thermodynamics to reconstruct the conditions at which the states of quenched mineralogical properties of rocks have equilibrated during the course of their evolution. While these works have funda mentally influenced our understanding ofthe physico-chemical history ofrocks, in recent years petrologists, mineralogists, and geochemists have been making greater efforts towards the application of kinetic theories in order to develop a better appreciation of the temporal details of geochemical processes. The present volume brings together a variety of current research on transport in systems of geochemical interest from atomic to outcrop scales. A major theme is atomic migration or diffusion, and its various manifestations on microscopic and macroscopic scales. Transport in the solid state is controlled by diffusion and is responsible for the states of atomic ordering and relaxation of composi tional zoning in minerals, development of compositional zoning during cooling, exsolution lamellae, and creep.

Author: R.C. Newton
Publisher: Springer
ISBN:
Category : Science
Languages : en
Pages : 330

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Today large numbers of geoscientists apply thermodynamic theory to solu tions of a variety of problems in earth and planetary sciences. For most problems in chemistry, the application of thermodynamics is direct and rewarding. Geoscientists, however, deal with complex inorganic and organic substances. The complexities in the nature of mineralogical substances arise due to their involved crystal structure and multicomponental character. As a result, thermochemical solutions of many geological-planetological problems should be attempted only with a clear understanding of the crystal-chemical and thermochemical character of each mineral. The subject of physical geochemistry deals with the elucidation and application of physico-chemical principles to geosciences. Thermodynamics of mineral phases and crystalline solutions form an integral part of it. Developments in mineralogic thermody namics in recent years have been very encouraging, but do not easily reach many geoscientists interested mainly in applications. This series is to provide geoscientists and planetary scientists with current information on the develop ments in thermodynamics of mineral systems, and also provide the active researcher in this rapidly developing field with a forum through which he can popularize the important conclusions of his work. In the first several volumes, we plan to publish original contributions (with an abundant supply of back ground material for the uninitiated reader) and thoughtful reviews from a number of researchers on mineralogic thermodynamics, on the application of thermochemistry to planetary phase equilibria (including meteorites), and on kinetics of geochemical reactions.

Author: Vladimir P. Kolotov
Publisher: Springer Nature
ISBN: 3031098838
Category : Science
Languages : en
Pages : 660

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This book presents 41 selected articles written by leading researchers from the Vernadsky Institute of Geochemistry and Analytical Chemistry, part of the Russian Academy of Sciences. The articles are grouped by the following topics: (1) Geochemistry, (2) Meteoritics, Cosmochemistry, Lunar and Planetary Sciences, (3) Biogeochemistry and Ecology, and (4) Analytical Chemistry, Radiochemistry, and Radioecology. The articles present recent experimental data, theoretical investigations, critical reviews, the results of computer modeling in the above-mentioned fields. Intended to provide a scientific “snapshot” of the institute, the book also includes content on its history, main scientific achievements and current goals, together with detailed descriptions of its 25 laboratories and three museums so as to promote new international collaborations. Given its scope, the book will be of interest to all scientists and graduate students working in the areas of geochemistry, analytical chemistry and radiochemistry, earth and environmental sciences, biogeosciences, meteoritics and planetary science, and to those seeking new collaboration opportunities in these areas in Russia.

Author: Marvin W. Rowe
Publisher: Elsevier
ISBN: 9781559387859
Category : Science
Languages : en
Pages : 356

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Author: G. D. Hobson
Publisher: Elsevier
ISBN: 1483146073
Category : Science
Languages : en
Pages : 596

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Advances in Organic Geochemistry is a collection of proceedings presented at the Third International Congress on Organic Geochemistry held in London on September 26-28, 1966. The papers explore advances in organic geochemistry and cover a wide range of topics, from carbon isotope variations in marine sediments to hydrogen isotopic fractionation of water passing through trees. Correlation problems among crude oils and the origin of trace metal enrichment in bituminous shales are also discussed. Comprised of 34 chapters, this volume begins by presenting the results of a carbon isotope study on methane from German coal deposits, followed by an analysis of the significance of carbon isotope variations in marine sediments. Subsequent chapters deal with the geochemical aspects of the occurrence of porphyrins in mineral oils and rocks in West Venezuela; pentacyclic triterpanes from petroleum; geochemical prospecting for petroleum; and the geochemical significance of pore fluid in shales. The nitrogenous constituents of deep-sea sediments are also considered, along with transformations of normal fatty acids in sediments and thermal alteration of organic matter in sediments. This book will be of interest to organic chemists and geochemists.

Author:
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Category :
Languages : en
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Author: Jorge Sanjurjo-Sánchez
Publisher: Nova Science Publishers
ISBN: 9781626182455
Category : Earth (Planet)
Languages : en
Pages : 0

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Geochemistry concerns the distribution and migration of chemical elements within the Earth, but it comprises much more defined challenges such as the study of the origin of chemical elements, their evolution, the formation of minerals and rocks minerals, and also the role of elements in biology (geobiology). From the beginning, geochemistry has undergone very important advances, especially in the twentieth century which include the study of both the interior and crust of the Earth, the composition of the atmosphere, interaction with living organisms, and the distribution of elements in the Solar System and planets. Modern geochemistry can be applied to nearly all of the Earth Sciences. This book includes chapters discussing the use of geochemistry in environmental geochemistry, the correlation of geological materials, use of rare earths, the study of clays, and the biogeochemistry of petrological applications of geochemistry.