Precambrian Banded-Iron-Formations

Precambrian Banded-Iron-Formations PDF Author: Y.P. Mel'nik
Publisher: Elsevier
ISBN: 0080869041
Category : Science
Languages : en
Pages : 323

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Book Description
Precambrian Banded-Iron-Formations

Precambrian Banded-Iron-Formations

Precambrian Banded-Iron-Formations PDF Author: Y.P. Mel'nik
Publisher: Elsevier
ISBN: 0080869041
Category : Science
Languages : en
Pages : 323

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Book Description
Precambrian Banded-Iron-Formations

Precambrian Banded Iron-formations

Precambrian Banded Iron-formations PDF Author: IU. P. Melnik ((IUrii Petrovich))
Publisher:
ISBN: 9780444419347
Category :
Languages : en
Pages : 310

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Reactive Transport in Porous Media

Reactive Transport in Porous Media PDF Author: Peter C. Lichtner
Publisher: Walter de Gruyter GmbH & Co KG
ISBN: 1501509799
Category : Science
Languages : en
Pages : 452

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Book Description
Volume 34 of Reviews in Mineralogy focuses on methods to describe the extent and consequences of reactive flow and transport in natural subsurface systems. Since the field of reactive transport within the Earth Sciences is a highly multidisciplinary area of research, including geochemistry, geology, physics, chemistry, hydrology, and engineering, this book is an attempt to some extent bridge the gap between these different disciplines. This volume contains the contributions presented at a short course held in Golden, Colorado, October 25-27, 1996 in conjunction with the Mineralogical Society of America's (MSA) Annual Meeting with the Geological Society of America in Denver, Colorado.

Banded Iron Formations to Iron Ore

Banded Iron Formations to Iron Ore PDF Author: Desmond Fitzgerald Lascelles
Publisher: Nova Science Publishers
ISBN: 9781536109719
Category : Nature
Languages : en
Pages : 0

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Book Description
From the first attempts to understand the origin of giant iron ore deposits, numerous false assumptions have been used as the basis of genesis models that have become standard and unquestioned, with later research generally seeking to find evidence supporting the existing models and ignoring contrary evidence. Many models were constructed based on extremely rare features, and their absence in the global abundance of iron formations was not considered important since there was no understanding of the major sedimentary structures, i.e. laminations and banding. Inconsistencies within the hypothetical models are either ignored or excused by proposing special circumstances, but no one considers that the models might be wrong or have only limited application. Many hypotheses regarding Earths history have been postulated from the difference between Phanerozoic and Precambrian iron-formations. In particular, the development of an oxygenated atmosphere has been deduced from the supposed evolution of iron-formations. The subject has provided a fertile field for research and models of Earths history, but without clear knowledge of the sedimentation, diagenesis and metamorphism of BIFs (branded iron formations), such models are speculative or even irrelevant. Since these models on the genesis and distribution of BIF were used as proxies to answer questions regarding the composition of the early oceans and atmosphere, weathering and transport conditions on early land surface, volcanism and continental development in the Archean eon, and as they affect exploration for the largest volume and most basic of industrial metals, they have an importance beyond academic sedimentary and stratigraphic interest. The aim of this book is to present a model for the origin of BIFs and derived high-grade iron ore deposits with global applications that are still subject to correction and change as new information becomes available and are free of illogical assumptions which do not conflict with either field observations or basic chemistry and physics.

Iron-Formation: Facts and Problems

Iron-Formation: Facts and Problems PDF Author: A.F. Trendall
Publisher: Elsevier
ISBN: 008086905X
Category : Science
Languages : en
Pages : 559

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Book Description
Iron-Formation: Facts and Problems

Lake Pavin

Lake Pavin PDF Author: Télesphore Sime-Ngando
Publisher: Springer
ISBN: 3319399616
Category : Science
Languages : en
Pages : 422

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Book Description
This book represents the first multidisciplinary scientific work on a deep volcanic maar lake in comparison with other similar temperate lakes. The syntheses of the main characteristics of Lake Pavin are, for the first time, set in a firmer footing comparative approach, encompassing regional, national, European and international aquatic science contexts. It is a unique lake because of its permanently anoxic monimolimnion, and furthermore, because of its small surface area, its substantially low human influence, and by the fact that it does not have a river inflow. The book reflects the scientific research done on the general limnology, history, origin, volcanology and geological environment as well as on the geochemistry and biogeochemical cycles. Other chapters focus on the biology and microbial ecology whereas the sedimentology and paleolimnology are also given attention. This volume will be of special interest to researchers and advanced students, primarily in the fields of limnology, biogeochemistry, and aquatic ecology.

The Archaean Geology of the Kaapvaal Craton, Southern Africa

The Archaean Geology of the Kaapvaal Craton, Southern Africa PDF Author: Alfred Kröner
Publisher: Springer
ISBN: 3319786520
Category : Science
Languages : en
Pages : 312

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Book Description
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.

Precambrian Geology of China

Precambrian Geology of China PDF Author: Mingguo Zhai
Publisher: Springer
ISBN: 3662478854
Category : Science
Languages : en
Pages : 389

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Book Description
This book is the first contribution to the overview of Precambrian geology of China. It covers Precambrian geology of the North China Craton, the South China Craton and the Tarim Craton, as well as other smaller blocks in the Chinese orogenic belts. It provides systematic concepts of the Chinese paleo-continents and incorporates the most up-to-date achievements. Edited by many of the active researchers working at the forefront of the related fields, it contributes greatly to the international Precambrian geology community and would be of interest to geoscientists working in the research field of geology of China and Precambrian geodynamics.

The Precambrian

The Precambrian PDF Author:
Publisher:
ISBN:
Category : Geology, Stratigraphic
Languages : en
Pages :

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Book Description


Evolution of Early Earth's Atmosphere, Hydrosphere, and Biosphere

Evolution of Early Earth's Atmosphere, Hydrosphere, and Biosphere PDF Author: Stephen E. Kesler
Publisher: Geological Society of America
ISBN: 0813711983
Category : Science
Languages : en
Pages : 350

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Book Description
"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.