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Snowballs in Africa: sectioning a long-lived Neoproterozoic carbonate platform and its bathyal foreslope (NW Namibia)
Abstract Otavi Group is a 1.5–3.5-km-thick epicontinental marine carbonate succession of
Neoproterozoic age, exposed in an 800-km-long Ediacaran− Cambrian fold belt that rims …
Neoproterozoic age, exposed in an 800-km-long Ediacaran− Cambrian fold belt that rims …
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 …
[كتاب][B] Stable isotope geochemistry
J Hoefs, J Hoefs - 2009 - Springer
The nine editions of Stable Isotope Geochemistry have appeared over a time span of nearly
50 years. The first edition (1973) appeared as a slim book of 135 pages. Due to the rapid …
50 years. The first edition (1973) appeared as a slim book of 135 pages. Due to the rapid …
Mesoproterozoic oxygenation event: From shallow marine to atmosphere
Oxygen availability is crucial for the evolution of eukaryotes in geological history, but the
redox conditions of the mid-Proterozoic atmospheric-oceanic system remain vigorously …
redox conditions of the mid-Proterozoic atmospheric-oceanic system remain vigorously …
[HTML][HTML] Combined cadmium and chromium isotopes record a collapse of bioproductivity across the Cretaceous—Paleogene boundary in the Danish basin
Cadmium (Cd) isotope signatures (δ 114 Cd) deduced from modern and ancient marine
deposits are often used as a proxy for bioproductivity and for micronutrient cycling, whereas …
deposits are often used as a proxy for bioproductivity and for micronutrient cycling, whereas …
Geochemical conditions regulating chromium preservation in marine sediments
In the marine sediment record, concentrations and isotope ratios of chromium (Cr) can be
used to reconstruct ocean biogeochemical conditions. These reconstructions rely on a …
used to reconstruct ocean biogeochemical conditions. These reconstructions rely on a …
[HTML][HTML] Stromatolites as geochemical archives to reconstruct microbial habitats through deep time: Potential and pitfalls of novel radiogenic and stable isotope …
Understanding the origin and evolution of life on Earth and potentially other planets in our
solar system is of fundamental interest for humanity. For the longest time in Earth's history …
solar system is of fundamental interest for humanity. For the longest time in Earth's history …
Fine clay shuttle as a key mechanism for V hyper-enrichment in shallow water Tremadocian black shale from Baltica
The essential role of the fine mineral fraction in V hyper-enrichment in black shales has
been suggested in previous studies; however,'the operational details' of such metallogenic …
been suggested in previous studies; however,'the operational details' of such metallogenic …
Chromium Cycling in Redox‐Stratified Basins Challenges δ53Cr Paleoredox Proxy Applications
Chromium stable isotope composition (δ53Cr) is a promising tracer for redox conditions
throughout Earth's history; however, the geochemical controls of δ53Cr have not been …
throughout Earth's history; however, the geochemical controls of δ53Cr have not been …
Marine microbial Mn (II) oxidation mediates Cr (III) oxidation and isotope fractionation
The stable chromium (Cr) isotope system has been used extensively over the past decade
as a paleoredox proxy. The prevailing view has been that Cr oxidation is essentially limited …
as a paleoredox proxy. The prevailing view has been that Cr oxidation is essentially limited …