Bioactive trace metals and their isotopes as paleoproductivity proxies: An assessment using GEOTRACES‐era data
Phytoplankton productivity and export sequester climatically significant quantities of
atmospheric carbon dioxide as particulate organic carbon through a suite of processes …
atmospheric carbon dioxide as particulate organic carbon through a suite of processes …
A critical review of molybdenum sequestration mechanisms under euxinic conditions: Implications for the precision of molybdenum paleoredox proxies
R Phillips, J Xu - Earth-Science Reviews, 2021 - Elsevier
The observed difference in molybdenum (Mo) mobility and isotopic fractionation under oxic
versus euxinic (ie, anoxic and sulfidic) aqueous conditions provides a sound operational …
versus euxinic (ie, anoxic and sulfidic) aqueous conditions provides a sound operational …
[HTML][HTML] Precipitation of molybdenum from euxinic waters and the role of organic matter
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 …
past oxygenation and Life's evolution. In these shales, positive correlations between Mo and …
[图书][B] Iron geochemistry: an isotopic perspective
Iron is a remarkable element in its relatively high abundance for its mass and its sensitivity to
(and control of) redox on a planetary scale over geologic time. Numerous volumes have …
(and control of) redox on a planetary scale over geologic time. Numerous volumes have …
Globally limited but severe shallow-shelf euxinia during the end-Triassic extinction
One of the most severe extinctions of complex marine life in Earth's history occurred at the
end of the Triassic period (~ 201.4 million years ago). The marine extinction was initiated by …
end of the Triassic period (~ 201.4 million years ago). The marine extinction was initiated by …
Episodic ventilation of euxinic bottom waters triggers the formation of black shale-hosted Mn carbonate deposits
Many manganese (Mn) carbonate deposits over geologic history are often closely
associated with black shales. However, the mechanism (s) by which the Mn entered the …
associated with black shales. However, the mechanism (s) by which the Mn entered the …
Multiple negative molybdenum isotope excursions in the Doushantuo Formation (South China) fingerprint complex redox-related processes in the Ediacaran Nanhua …
Abstract The Ediacaran Doushantuo Formation offers one of the most complete and
extensively studied records of end-Neoproterozoic biotic and environmental change. Here …
extensively studied records of end-Neoproterozoic biotic and environmental change. Here …
Evidence for high organic carbon export to the early Cambrian seafloor
Oxygenation of the early Cambrian ocean is commonly ascribed to high organic export to
the sediment due to the rise of algae and filter-feeding animals, but direct evidence of …
the sediment due to the rise of algae and filter-feeding animals, but direct evidence of …
Characterisation of shallow groundwater dissolved organic matter in aeolian, alluvial and fractured rock aquifers
Groundwater organic matter is processed within aquifers through transformations such as
the adsorption of dissolved organic matter (DOM) to minerals and biodegradation. The …
the adsorption of dissolved organic matter (DOM) to minerals and biodegradation. The …
Recent advances in geochemical paleo-oxybarometers
B Kendall - Annual Review of Earth and Planetary Sciences, 2021 - annualreviews.org
Knowledge of how and why oxygenic photosynthesis, eukaryotes, metazoans, and humans
evolved on Earth is important to the search for complex life outside our Solar System. Hence …
evolved on Earth is important to the search for complex life outside our Solar System. Hence …