Author: Kaarel Mänd
Publisher: Cambridge University Press
ISBN: 1009002279
Category : Science
Languages : en
Pages : 66
Get Book Here
Book Description
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.
Author: Y.P. Mel'nik
Publisher: Elsevier
ISBN: 0080869041
Category : Science
Languages : en
Pages : 323
Get Book Here
Book Description
Precambrian Banded-Iron-Formations
Author: Michael M. Kimberley
Publisher:
ISBN:
Category :
Languages : en
Pages : 104
Get Book Here
Book Description
Author: J. J. Chauvel
Publisher:
ISBN:
Category : Formations (Geology)
Languages : en
Pages : 480
Get Book Here
Book Description
Author: Su E. Ho
Publisher:
ISBN:
Category : Formations (Geology)
Languages : en
Pages : 42
Get Book Here
Book Description
Author: I͡Uriĭ Petrovich Melʹnik
Publisher: Elsevier Publishing Company
ISBN: 9780444419347
Category : Electronic books
Languages : en
Pages : 310
Get Book Here
Book Description
Author: Lutz Schirrmeister
Publisher: Frontiers Media SA
ISBN: 2889764664
Category : Science
Languages : en
Pages : 460
Get Book Here
Book Description
Author: Peter W. Uitterdijk Appel
Publisher:
ISBN:
Category : Geology, Stratigraphic
Languages : en
Pages : 696
Get Book Here
Book Description
Author: Victor Melezhik
Publisher: Springer Science & Business Media
ISBN: 3642296823
Category : Science
Languages : en
Pages : 503
Get Book Here
Book Description
Earth’s present-day environments are the outcome of a 4.5 billion year period of evolution reflecting the interaction of global-scale geological and biological processes punctuated by several extraordinary events and episodes that perturbed the entire Earth system. One of the earliest and arguably greatest of these events was a substantial increase (orders of magnitude) in the atmospheric oxygen abundance, sometimes referred to as the Great Oxidation Event. Volume 1: The Palaeoproterozoic of Fennoscandia as Context for the Fennoscandian Arctic Russia - Drilling Earth Project describes the implementation of the FAR-DEEP drilling project in Arctic Russia. It summarises the knowledge of more than 50 years of largely Russian-led fieldwork, information hitherto virtually unavailable in the west, and provides geological description of drilling areas with an overwhelming illustration of rocks by high-quality, representative photographs. The volume offers a comprehensive review and rich photo-illustration of palaeotectonic, palaeogeographic and magmatic evolution of the Fennoscandian Shield in the early Palaeoproterozoic, and link the evolution of the shield to the emergence of an aerobic Earth system. The volume unfolds the event-based Fennoscandian chronostratigraphy and discusses the chronology of the Palaeoproterozoic global events as the base for a new subdivision of Palaeoproterozoic time. Welcome to the illustrative journey through one of the most exciting periods of planet Earth!
Author: J. E. Maynard
Publisher:
ISBN:
Category :
Languages : en
Pages :
Get Book Here
Book Description
