Iron Formations as Palaeoenvironmental Archives

系列名：Elements in Geochemical Tracers in Earth System Sc
ISBN13：9781108995290
出版社：Cambridge University Press
作者：Kaarel Mand (University of Alberta); Leslie J. (University of Regina Robbins Saskatchewan Canada); Noah J. (Yale University Planavsky Connecticut); Andrey (University of California Bekker Riverside); Kurt
出版日：2021/11/30
裝訂／頁數：平裝／75頁
版次：無法解析
關鍵字： Iron Formations as Palaeoenvironmental Archives、 Iron、 Formations、 as、 Palaeoenvironmental、 Archives、 Cambridge University Press、 Kaarel Mand (University of Alberta)、 Leslie J. (University of Regina Robbins Saskatchewan Canada)、 Noah J. (Yale University Planavsky Connecticut)、 Andrey (University of California Bekker Riverside)、 Kurt、外文書、自然科普、科學、

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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.