The Iron Formations of the Precambrian Hamersley Group, Western Australia with Special Reference to the Associated Crocidolite
Author: Alec Francis Trendall
Publisher:
Published: 1970
Total Pages: 404
ISBN-13:
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Author: Alec Francis Trendall
Publisher:
Published: 1970
Total Pages: 404
ISBN-13:
DOWNLOAD EBOOKAuthor: Su E. Ho
Publisher:
Published: 1997
Total Pages: 42
ISBN-13:
DOWNLOAD EBOOKAuthor: Y.P. Mel'nik
Publisher: Elsevier
Published: 1982-01-01
Total Pages: 323
ISBN-13: 0080869041
DOWNLOAD EBOOKPrecambrian Banded-Iron-Formations
Author: P.G. Eriksson
Publisher: Elsevier
Published: 2004-03-04
Total Pages: 967
ISBN-13: 008054259X
DOWNLOAD EBOOKIn this book the editors strive to cover all primary (i.e. non-applied) topics in Precambrian geology in a non-partisan way, by using a large team of international authors to present their datasets and highly divergent viewpoints. The chapters address: celestial origins of Earth and succeeding extraterrestrial impact events; generation of continental crust and the greenstone-granite debate; the interaction of mantle plumes and plate tectonics over Precambrian time; Precambrian volcanism, emphasising komatiite research; evolution and models for Earth's hydrosphere and atmosphere; evolution of life and its influence on Precambrian ocean chemistry and chemical sedimentation; sedimentation through Precambrian time; the application of sequence stratigraphy to the Precambrian rock record. Each topic is introduced and a non-partisan closing commentary provided at the end of each chapter. The final chapter blends the major geological events and rates at which important processes occurred into a synthesis, which postulates a number of "event clusters" in the Precambrian when significant changes occurred in many natural systems and geological environments. Also available in paperback, ISBN: 0-444-51509-7
Author: Peter W. Uitterdijk Appel
Publisher:
Published: 1987
Total Pages: 696
ISBN-13:
DOWNLOAD EBOOKAuthor: D.R. Hunter
Publisher: Elsevier
Published: 1981-01-01
Total Pages: 890
ISBN-13: 0080869017
DOWNLOAD EBOOKPrecambrian of the Southern Hemisphere
Author:
Publisher:
Published: 1975
Total Pages: 738
ISBN-13:
DOWNLOAD EBOOKAuthor: Kaarel Mänd
Publisher: Cambridge University Press
Published: 2022-01-20
Total Pages: 66
ISBN-13: 1009002279
DOWNLOAD EBOOKAncient 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.
Author: A.F. Trendall
Publisher: Elsevier
Published: 2000-04-01
Total Pages: 559
ISBN-13: 008086905X
DOWNLOAD EBOOKIron-Formation: Facts and Problems
Author: Wladyslaw Altermann
Publisher: John Wiley & Sons
Published: 2009-03-05
Total Pages: 464
ISBN-13: 1444304321
DOWNLOAD EBOOKThe motivation for this volume came from the idea that thePrecambrian is the key, both to the present, and to theunderstanding of the Earth as a whole. The Precambrian constitutesabout 85% of Earth's history, and of that, about 3.75 billion yearsof Precambrian time, represented by rocks, are accessible togeoscientists. Ancient atmospheric and environmental conditions canbe traced back to the time when the Earth was only about 250million years old. Precambrian rocks supply almost 75% of importantmineral resources such as Fe, Mn, Au, Pt and Cr. Many of theseelements are associated with sedimentary rocks and some importanthydrocarbon, coal and graphite deposits are also hosted byPrecambrian rocks. This volume is aimed at geoscientists interested in Precambriansedimentary rocks and at students of Earth history. It containsreview articles discussing Precambrian conditions and case studiesfrom Precambrian shields and successions of North and SouthAmerica, Australia, Africa, Europe, Asia and India. Theintroductory papers, written by experts on Precambrianenvironments, treat comprehensively the application of actualism tothe Precambrian, the evolution and influence of life on thesedimentary rock record, the genesis of Banded Iron Formations, thePrecambrian sulphur cycle and the significance of Precambrianchemical carbonate precipitates. The case studies includedepositional settings and processes in Archean terranes, inPaleoproterozoic sequences, with some emphasis on the lack ofvegetation and weathering, and in late Proterozoic sequences, withsome emphasis on glacial deposits. The contributions demonstratethat Precambrian sedimentary deposits are commonly similar to theirPhanerozoic counterparts in terms of composition, sedimentaryprocesses, and depositional setting, but may differ significantlyas a result of lack of vegetation, climatic and biologicalconstraints, composition and circulation of seawater, and thesecular involvement of continental crust. Contains review articles discussing Precambrian conditions andcase studies from Precambrian shields and successions of North andSouth America, Australia, Africa, Europe, Asia and India. The introductory papers, written by experts on Precambrianenvironments, treat comprehensively the application of actualism tothe Precambrian, the evolution and influence of life on thesedimentary rock record, the genesis of Banded Iron Formations, thePrecambrian sulphur cycle and the significance of Precambrianchemical carbonate precipitates. Detailed case studies include depositional settings andprocesses in Archean terranes, in Paleoproterozoic sequences, withsome emphasis on the lack of vegetation and weathering, and in lateProterozoic sequences, with some emphasis on glacialdeposits. Written for geoscientists interested in Precambrian sedimentaryrocks and students of Earth history. If you are a member of the International Association ofSedimentologists (IAS), for purchasing details, please see:http://www.iasnet.org/publications/details.asp?code=SP33