The emergence and diversification of early animals is commonly thought to have coincided with atmosphere and ocean oxygenation across the terminal Neoproterozoic and early …
To improve estimates of the extent of ocean oxygenation during the late Ediacaran Period, we measured the U and Mo isotope compositions of euxinic (anoxic and sulfidic) organic …
Any effort to reconstruct Earth history using variations in authigenic enrichments of redox- sensitive and biogeochemically important trace metals must rest on a fundamental …
F Scholz, C Siebert, AW Dale, M Frank - Geochimica et Cosmochimica Acta, 2017 - Elsevier
The concentration and isotope composition of molybdenum (Mo) in sediments and sedimentary rocks are widely used proxies for anoxic conditions in the water column of …
GR Helz, TP Vorlicek - Chemical Geology, 2019 - Elsevier
Molybdenum preserved in organic-rich shales is a key archive employed in studying Earth's past oxygenation and Life's evolution. In these shales, positive correlations between Mo and …
J Noordmann, S Weyer, C Montoya-Pino, O Dellwig… - Chemical …, 2015 - Elsevier
Recent investigations have revealed significant fractionation of 238 U/235 U between organic-rich sediments of anoxic marginal seas and seawater, indicating redox-dependent …
Although redox conditions are the dominant control on authigenic enrichment of trace metals in marine sediments, other factors may be important within environments having relatively …
Redox-sensitive trace metals and their isotopes have emerged as important tools that are used to reconstruct the redox-evolution of the ocean-atmosphere system. However …
Because of anthropogenic global warming, the world ocean is currently losing oxygen. This trend called ocean deoxygenation is particularly pronounced in low-latitude upwelling …