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Trace metals as paleoredox and paleoproductivity proxies: An update
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TLDR
In this paper, a synthesis of the use of selected trace elements as proxies for reconstruction of paleoproductivity and paleoredox conditions is presented, and the combined used of U, V and Mo enrichments may allow suboxic environments to be distinguished from anoxic-euxinic ones.About:
This article is published in Chemical Geology.The article was published on 2006-08-30. It has received 2708 citations till now.read more
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Environmental analysis of paleoceanographic systems based on molybdenum–uranium covariation
TL;DR: In this article, an analysis of anoxic facies from two North American paleomarine systems, the Late Pennsylvanian Midcontinent Sea (LPMS) and the Late Devonian Seaway (LDS), reveals authigenic Mo-U relationships similar to those of the modern marine environments above, implying similar redox and hydrographic controls.
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Analysis of marine environmental conditions based onmolybdenum–uranium covariation—Applications to Mesozoic paleoceanography
TL;DR: In this paper, the authors examined U-Mo covariation in organic-rich sediments deposited mostly in the western Tethyan region during oceanic anoxic events (OAEs) of Early Jurassic to Late Cretaceous age.
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The Neoproterozoic oxygenation event: Environmental perturbations and biogeochemical cycling
TL;DR: The oxygen content of the Earth's surface environment is thought to have increased in two broad steps: the Great Oxygenation Event (GOE) around the Archean-Proterozoic boundary and the Neoproterogeneic Oxygenations Event (NOE), during which oxygen possibly accumulated to the levels required to support animal life and ventilate the deep oceans as discussed by the authors.
Journal ArticleDOI
Ocean oxygenation in the wake of the Marinoan glaciation
Swapan K. Sahoo,Noah J. Planavsky,Brian Kendall,Brian Kendall,Xinqiang Wang,Xiaoying Shi,Clint Scott,Ariel D. Anbar,Timothy W. Lyons,Ganqing Jiang +9 more
TL;DR: The data provide evidence for an early Ediacaran oxygenation event, which pre-dates the previous estimates for post-Marinoan oxygenation by more than 50 million years, and seem to support a link between the most severe glaciations in Earth’s history, the oxygenation of the Earth's surface environments, and the earliest diversification of animals.
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A Carbonaceous Sedimentary Source-Rock Model for Carlin-Type and Orogenic Gold Deposits
TL;DR: In this paper, the authors present evidence and arguments that carbonaceous sedimentary rocks were a source for Au and As in sediment-hosted orogenic and Carlin-type gold deposits and develop a corresponding genetic model.
References
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The continental crust: Its composition and evolution
TL;DR: In this paper, the authors describe the composition of the present upper crust and deal with possible compositions for the total crust and the inferred composition of lower crust, and the question of the uniformity of crustal composition throughout geological time is discussed.
Journal ArticleDOI
Early oxidation of organic matter in pelagic sediments of the eastern equatorial Atlantic: suboxic diagenesis
Philip N. Froelich,Gary P. Klinkhammer,Michael L. Bender,Nile A. Luedtke,G.R. Heath,Doug Cullen,Paul Dauphin,Doug Hammond,Blayne Hartman,Val Maynard +9 more
TL;DR: Pore water profiles of total CO 2, pH, PO 3−4, NO − 3 plus NO − 2, SO 2− 4, S 2−, Fe 2+ and Mn 2+ have been obtained in cores from pelagic sediments of the eastern equatorial Atlantic under waters of moderate to high productivity as mentioned in this paper.
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