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Examination Of Banded Iron Formation Through Petrographic Geochemical And Iron Isotope Analyses
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Book Synopsis Examination of Banded Iron Formation Through Petrographic, Geochemical and Iron Isotope Analyses by : Melissa Margaret Hage
Download or read book Examination of Banded Iron Formation Through Petrographic, Geochemical and Iron Isotope Analyses written by Melissa Margaret Hage and published by . This book was released on 2015 with total page 353 pages. Available in PDF, EPUB and Kindle. Book excerpt: Banded iron formation (BIF) has the potential to preserve geochemical signatures critical to interpretation of early Earth because: (1) it is found within the Precambrian when fundamental changes in Earth’s physical, biological and chemical evolution occurred, and (2) it may preserve a record of the depositional environment. Rare earth elements (REE) are useful for investigating BIF because they have characteristic features. One goal of this study was to evaluate the calculation of certain REE ratios to determine if the calculation affected the interpretation. It was concluded that the method for calculating certain ratios may affect the interpretation of redox conditions for a given sample. Another goal was to determine paleo-oceanic and atmospheric redox conditions. REE concentrations in BIF samples from the >3.7 Ga Isua Greenstone Belt, the ~3.0 Ga Buhwa Greenstone Belt, and the ~1.9 Ga Gunflint Iron Formation were examined and it was concluded that the ~1.9 Ga ocean was not fully ventilated, but that oxidative continental weather was occurring. A third goal was to evaluate the degree of heterogeneity in BIF mineral REE chemistry. Substantial microscale heterogeneity in mineral spot chemistry was observed and is most likely a result of inorganic, post- depositional alteration processes. Lastly, this study examined a lithology whose age and origin has been highly debated, with some arguing for a BIF protolith and others arguing for an ultramafic protolith. To investigate the unit’s protolith, I analyzed mafic mineral compositions and found that they possess trace-element signatures indicative of an igneous origin, rendering a BIF protolith unnecessary. To investigate the reported age, I measured the orientation of foliations, mineral lineations and fold axes on either side of the contact used to date the contentious lithology and concluded that the contact is tectonic and thus cannot be used to constrain the depositional age of the debated unit.
Book Synopsis The Archaean Geology of the Kaapvaal Craton, Southern Africa by : Alfred Kröner
Download or read book The Archaean Geology of the Kaapvaal Craton, Southern Africa written by Alfred Kröner and published by Springer. This book was released on 2019-02-20 with total page 302 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book provides a comprehensive overview of the evolution of one of the oldest and best-exposed Archaean cratons on this planet. There is currently a renewed interest in the early Earth, and the Kaapvaal craton has long served as a model for early crustal evolution. This unique multidisciplinary resource features information on geology, tectonics, geochemistry, and geochronology. It offers a wealth of new data on various aspects of the craton as well as contributions on the various crustal units by international specialists.
Book Synopsis Evolution of Early Earth's Atmosphere, Hydrosphere, and Biosphere by : Stephen E. Kesler
Download or read book Evolution of Early Earth's Atmosphere, Hydrosphere, and Biosphere written by Stephen E. Kesler and published by Geological Society of America. This book was released on 2006-01-01 with total page 350 pages. Available in PDF, EPUB and Kindle. Book excerpt: "The history of Earth's early atmosphere, hydrosphere, and biosphere, from Hadean through Proterozoic time, is one of geology's enduring puzzles. Ore deposits provide important insights into this history because they contain elements and minerals that are highly sensitive to the geochemical environment in which they form. Just what these minerals tell us remains a matter of considerable debate, however. When and how did life develop, an oxygen-rich atmosphere form, and sulfate dominate the ocean? This volume contains reports on these questions from both sides of the aisle for iron and manganese formations, uranium paleoplacers and hydrothermal deposits, and exhalative sulfides and oxides."--Publisher's website.
Book Synopsis Using Geochemical Data by : Hugh Rollinson
Download or read book Using Geochemical Data written by Hugh Rollinson and published by Cambridge University Press. This book was released on 2021-05-06 with total page 359 pages. Available in PDF, EPUB and Kindle. Book excerpt: This textbook is a complete rewrite, and expansion of Hugh Rollinson's highly successful 1993 book Using Geochemical Data: Evaluation, Presentation, Interpretation. Rollinson and Pease's new book covers the explosion in geochemical thinking over the past three decades, as new instruments and techniques have come online. It provides a comprehensive overview of how modern geochemical data are used in the understanding of geological and petrological processes. It covers major element, trace element, and radiogenic and stable isotope geochemistry. It explains the potential of many geochemical techniques, provides examples of their application, and emphasizes how to interpret the resulting data. Additional topics covered include the critical statistical analysis of geochemical data, current geochemical techniques, effective display of geochemical data, and the application of data in problem solving and identifying petrogenetic processes within a geological context. It will be invaluable for all graduate students, researchers, and professionals using geochemical techniques.
Book Synopsis Using Geochemical Data by : Hugh Richard Rollinson
Download or read book Using Geochemical Data written by Hugh Richard Rollinson and published by Cambridge University Press. This book was released on 2021-05-06 with total page 359 pages. Available in PDF, EPUB and Kindle. Book excerpt: How best to interpret and apply geochemical data to understand geological processes, for graduate students, researchers, and professionals.
Book Synopsis Geochemistry and Mineralogy of Rare Earth Elements by : Bruce R. Lipin
Download or read book Geochemistry and Mineralogy of Rare Earth Elements written by Bruce R. Lipin and published by Walter de Gruyter GmbH & Co KG. This book was released on 2018-12-17 with total page 360 pages. Available in PDF, EPUB and Kindle. Book excerpt: Volume 21 of Reviews in Mineralogy treats a short course on the rare earth elements to about 80 participants in San Francisco, California, December 1-3, 1989, just prior to the fall meeting of the American Geophysical Union. Contents: Cosmochemistry of the Rare Earth Elements: Condensation and Evaporation Processes Radiogenic Isotope Geochemistry of Rare Earth Elements Partitioning of Rare Earth Elements between Major Silicate Minerals and Basaltic Melts An Approach to Trace Element Modeling Using a Simple Igneous System as an Example Rare Earth Elements in Upper Mantle Rocks Rare Earth Elements in Metamorphic Rocks Rare Earth Elements in Sedimentary Rocks: Influence of Provenance and Sedimentary Processes Aqueous Geochemistry of Rare Earth Elements Rare Earth Elements in Lunar Materials Compositional and Phase Relations among Rare Earth Element Minerals Economic Geology of Rare Earth Minerals Cathodoluminescence Emission Spectra of Rare Earth Element Activators in Minerals
Download or read book The Adelaide Geosyncline written by and published by . This book was released on 1987 with total page 468 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Ore Deposits written by Sophie Decree and published by John Wiley & Sons. This book was released on 2019-04-23 with total page 272 pages. Available in PDF, EPUB and Kindle. Book excerpt: The latest knowledge on mineral ore genesis and the exploration of ore deposits Global demand for metals has risen considerably over the past decade. Geologists are developing new approaches for studying ore deposits and discovering new sources. Ore Deposits: Origin, Exploration, and Exploitation is a compilation of diverse case studies on new prospects in ore deposit geology including atypical examples of mineral deposits and new methods for ore exploration. Volume highlights include: Presentation of the latest research on a range of ore deposit types Application of ore deposits to multiple areas of geology and geophysical exploration Emphasis on diverse methods and tools for the study of ore deposits Useful case studies for geologists in both academia and industry Ore Deposits: Origin, Exploration, and Exploitation is a valuable resource for economic geologists, mineralogists, petrologists, geochemists, mining engineers, research professionals, and advanced students in relevant areas of academic study. Read an interview with the editors to find out more: https://eos.org/editors-vox/developments-in-the-continuing-search-for-new-mineral-deposits
Book Synopsis Iron Isotope Fractionation by Microbial Iron Reduction in a Modern Banded Iron Formation Analog by : George E. Tangalos
Download or read book Iron Isotope Fractionation by Microbial Iron Reduction in a Modern Banded Iron Formation Analog written by George E. Tangalos and published by . This book was released on 2008 with total page 166 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Black Shales written by P. B. Wignall and published by . This book was released on 1994 with total page 152 pages. Available in PDF, EPUB and Kindle. Book excerpt: Black shales provides the first comprehensive synthesis of the diverse research regarding the origin of petroleum source rocks. The book offers in-depth reviews from the fields sedimentology, palaeoecology, and geochemistry, and particularly focuses on the influence of palaeo-oxygen levels. Current debates--including the one over the influence of sedimentation rate, productivity, and enhanced preservation on the burial efficiency of organic carbon--receive a lively discussion. In addition, the importance of newly defined concepts of sequence stratigraphy to models of the formation of black shales receives an in-depth treatment for the first time. The book will be of interest to all geologists investigating palaeoenvironments, particularly those engaged in the search for hydrocarbons.
Download or read book Treatise on Geochemistry written by and published by Newnes. This book was released on 2013-10-19 with total page 14787 pages. Available in PDF, EPUB and Kindle. Book excerpt: This extensively updated new edition of the widely acclaimed Treatise on Geochemistry has increased its coverage beyond the wide range of geochemical subject areas in the first edition, with five new volumes which include: the history of the atmosphere, geochemistry of mineral deposits, archaeology and anthropology, organic geochemistry and analytical geochemistry. In addition, the original Volume 1 on "Meteorites, Comets, and Planets" was expanded into two separate volumes dealing with meteorites and planets, respectively. These additions increased the number of volumes in the Treatise from 9 to 15 with the index/appendices volume remaining as the last volume (Volume 16). Each of the original volumes was scrutinized by the appropriate volume editors, with respect to necessary revisions as well as additions and deletions. As a result, 27% were republished without major changes, 66% were revised and 126 new chapters were added. In a many-faceted field such as Geochemistry, explaining and understanding how one sub-field relates to another is key. Instructors will find the complete overviews with extensive cross-referencing useful additions to their course packs and students will benefit from the contextual organization of the subject matter Six new volumes added and 66% updated from 1st edition. The Editors of this work have taken every measure to include the many suggestions received from readers and ensure comprehensiveness of coverage and added value in this 2nd edition The esteemed Board of Volume Editors and Editors-in-Chief worked cohesively to ensure a uniform and consistent approach to the content, which is an amazing accomplishment for a 15-volume work (16 volumes including index volume)!
Book Synopsis Iron Formations as Palaeoenvironmental Archives by : Kaarel Mänd
Download or read book Iron Formations as Palaeoenvironmental Archives written by Kaarel Mänd and published by Cambridge University Press. This book was released on 2022-01-20 with total page 66 pages. Available in PDF, EPUB and Kindle. Book excerpt: Ancient iron formations - iron and silica-rich chemical sedimentary rocks that formed throughout the Precambrian eons - provide a significant part of the evidence for the modern scientific understanding of palaeoenvironmental conditions in Archaean (4.0–2.5 billion years ago) and Proterozoic (2.5–0.539 billion years ago) times. Despite controversies regarding their formation mechanisms, iron formations are a testament to the influence of the Precambrian biosphere on early ocean chemistry. As many iron formations are pure chemical sediments that reflect the composition of the waters from which they precipitated, they can also serve as nuanced geochemical archives for the study of ancient marine temperatures, redox states, and elemental cycling, if proper care is taken to understand their sedimentological context.
Book Synopsis Precambrian Banded-Iron-Formations by : Y.P. Mel'nik
Download or read book Precambrian Banded-Iron-Formations written by Y.P. Mel'nik and published by Elsevier. This book was released on 1982-01-01 with total page 323 pages. Available in PDF, EPUB and Kindle. Book excerpt: Precambrian Banded-Iron-Formations
Book Synopsis Methods for Geochemical Analysis by : Philip A. Baedecker
Download or read book Methods for Geochemical Analysis written by Philip A. Baedecker and published by . This book was released on 1987 with total page 192 pages. Available in PDF, EPUB and Kindle. Book excerpt: Analytical methods used in the Geologic Division laboratories of the U.S. Geological Survey for the inorganic chemical analysis of rock and mineral samples.
Book Synopsis Iron-Formation: Facts and Problems by : A.F. Trendall
Download or read book Iron-Formation: Facts and Problems written by A.F. Trendall and published by Elsevier. This book was released on 2000-04-01 with total page 559 pages. Available in PDF, EPUB and Kindle. Book excerpt: Iron-Formation: Facts and Problems
Book Synopsis Chemostratigraphy Across Major Chronological Boundaries by : Alcides N. Sial
Download or read book Chemostratigraphy Across Major Chronological Boundaries written by Alcides N. Sial and published by John Wiley & Sons. This book was released on 2018-12-18 with total page 318 pages. Available in PDF, EPUB and Kindle. Book excerpt: Winner of the 2020 PROSE Award for Earth Science! Exploring environmental changes through Earth’s geological history using chemostratigraphy Chemostratigraphy is the study of the chemical characteristics of different rock layers. Decoding this geochemical record across chronostratigraphic boundaries can provide insights into geological history, past climates, and sedimentary processes. Chemostratigraphy Across Major Chronological Boundaries presents state-of-the-art applications of chemostratigraphic methods and demonstrates how chemical signatures can decipher past environmental conditions. Volume highlights include: Presents a global perspective on chronostratigraphic boundaries Describes how different proxies can reveal distinct elemental and isotopic events in the geologic past Examines the Archaean-Paleoproterozoic, Proterozoic-Paleozoic, Paleozoic-Mesozoic, and Mesozoic-Paleogene boundaries Explores cause-and-effect through major, trace, PGE, and REE elemental, stable, and radiogenic isotopes Offers solutions to persistent chemostratigraphic problems on a micro-global scale Geared toward academic and researchgeoscientists, particularly in the fields of sedimentary petrology, stratigraphy, isotope geology, geochemistry, petroleum geology, atmospheric science, oceanography, climate change and environmental science, Chemostratigraphy Across Major Chronological Boundaries offers invaluable insights into environmental evolution and climatic change. Read the Editors' Vox: https://eos.org/editors-vox/unravelling-the-past-using-elements-and-isotopes
Author :F. Wall Publisher :The Mineralogical Society of Great Britain and Ireland ISBN 13 :0903056224 Total Pages :514 pages Book Rating :4.9/5 (3 download)
Book Synopsis Phoscorites and Carbonatites from Mantle to Mine: the Key Example of the Kola Alkaline Province by : F. Wall
Download or read book Phoscorites and Carbonatites from Mantle to Mine: the Key Example of the Kola Alkaline Province written by F. Wall and published by The Mineralogical Society of Great Britain and Ireland. This book was released on 2004-07-01 with total page 514 pages. Available in PDF, EPUB and Kindle. Book excerpt: Phoscorites are dark, often very handsome, sometimes economically valuable, magnetite-apatite-silicate rocks, almost always associated with carbonatite. They are key to understanding the longstanding question of how carbonate and carbonate-bearing magmas rise to the crust and the Earths surface. Despite this, they have been given little attention; a search on geological literature databases will produce thousands of references to carbonatite (up to 4125 on Georef) but not more than thirty references to phoscorite. This book goes some way to redress this balance. Over recent years many European and North American scientists have studied Kola rocks in collaboration with Russian colleagues. The idea for this book came from one such project funded by the European organisation, INTAS (Grant No 97-0722). The Kola Peninsula is one of the outstanding areas in the World for the concentration and economic importance of alkaline rocks. However, Russian work on the Kola complexes is still relatively unknown and a particular aim of this book, as well as presenting current research, is to make this knowledge accessible to English language readers. A large exploration programme on Kola alkaline rocks was active from 1950 to 1990 and involved teams of geologists who studied many kilometres of drill core and carried out detailed mineralogical and petrological studies.
