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Andrey Bekker
Researcher at University of California, Riverside
Publications - 196
Citations - 16129
Andrey Bekker is an academic researcher from University of California, Riverside. The author has contributed to research in topics: Archean & Great Oxygenation Event. The author has an hindex of 60, co-authored 171 publications receiving 13272 citations. Previous affiliations of Andrey Bekker include Virginia Tech & University of California.
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Journal ArticleDOI
Dating the rise of atmospheric oxygen
Andrey Bekker,Heinrich D. Holland,Pei-Ling Wang,D. Rumble,Holly J. Stein,Judith L. Hannah,Louis Coetzee,Nicolas J. Beukes +7 more
TL;DR: It is found that syngenetic pyrite is present in organic-rich shales of the 2.32-Gyr-old Rooihoogte and Timeball Hill formations, South Africa, indicating that atmospheric oxygen was present at significant levels during the deposition of these units.
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Tracing the stepwise oxygenation of the Proterozoic ocean
Clint Scott,Timothy W. Lyons,Andrey Bekker,Andrey Bekker,Yanan Shen,Simon W. Poulton,Xuelei Chu,Ariel D. Anbar +7 more
TL;DR: A new perspective on ocean oxygenation is presented based on the authigenic accumulation of the redox-sensitive transition element molybdenum in sulphidic black shales, which reflects a greatly expanded oceanic reservoir due to oxygenation of the deep ocean and corresponding decrease in sulphide conditions in the sediments and water column.
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Iron Formation: The Sedimentary Product of a Complex Interplay among Mantle, Tectonic, Oceanic, and Biospheric Processes
Andrey Bekker,Bryan Krapež,John F. Slack,Noah J. Planavsky,Axel Hofmann,Kurt O. Konhauser,Olivier Rouxel +6 more
TL;DR: In this article, it was shown that occurrences of BIF, GIF, Pherozoic ironstones, and exhalites surrounding VMS systems are linked to diverse environmental changes.
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Evidence for oxygenic photosynthesis half a billion years before the Great Oxidation Event
Noah J. Planavsky,Dan Asael,Axel Hofmann,Christopher T. Reinhard,Stefan V. Lalonde,Andrew Knudsen,Xiangli Wang,Xiangli Wang,Frantz Ossa Ossa,Ernesto Pecoits,Albertus J. B. Smith,Nicolas J. Beukes,Andrey Bekker,Thomas M. Johnson,Kurt O. Konhauser,Timothy W. Lyons,Olivier Rouxel +16 more
TL;DR: The early Earth was characterized by the absence of oxygen in the ocean-atmosphere system, in contrast to the well-oxygenated conditions that prevail today as discussed by the authors, and the evolution of oxygenic photosynthesis is generally accepted to have been the ultimate cause of this rise.
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Iron isotope constraints on the Archean and Paleoproterozoic ocean redox state.
Olivier Rouxel,Olivier Rouxel,Andrey Bekker,Andrey Bekker,Katrina J. Edwards,Katrina J. Edwards +5 more
TL;DR: Variable and negative iron isotope values in pyrites older than about 2.3 Ga suggest that an iron-rich global ocean was strongly affected by the deposition of iron oxides in a redox stratified ocean.