【直播】【地球生物学线上论坛】What banded iron formations tell us...
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本次报告由中国古生物学会地球生物学分会主办，于2021年11月16日10:30开始，授权蔻享学术进行网络直播。
What banded iron formations tell us about
the Precambrian biosphere
报告人
Kurt Konhauser（University of Alberta）
时间
2021年11月16日10:30
Banded iron formations (BIF) are iron rich (~20-40% Fe) and siliceous (~40-50% SiO2) sedimentary deposits that precipitated throughout much of the Precambrian. Their trace element composition is now being used as a proxy for ancient seawater chemistry, with the view of better understanding the evolution of O2-producing cyanobacteria and subsequent aerobic metabolisms. Two related examples are provided in the talk: Ni availability in the oceans and its consequences for methanogens, and the Cr enrichment and the evolution of aerobic continental pyrite oxidation. Prospectives for the future also include evaluating marine trace element evolution from other lithologies, such as cherts, in an effort to better understand the paleo-nutrient landscape.
报告人介绍
图 | Kurt Konhauser
Kurt Konhauser is a Professor of Geomicrobiology at the University of Alberta, Edmonton, Canada. He has been at Alberta since 2002 when he accepted a Canada Research Scholarship. He is the Editor-in-Chief of the journal Geobiology, author of the textbook Introduction to Geomicrobiology, and co-editor of the textbook Fundamentals of Geobiology. He is a Fellow of the Royal Society of Canada, Fellow of the Geochemical Society and Fellow of the American Geophysical Union. Most recently he was awarded the Geobiology and Geomicrobiology Division Distinguished Career Award by the Geological Society of America.
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