The molybdenum isotopic composition of the modern ocean
Y Nakagawa, S Takano, ML Firdaus, K Norisuye… - Geochemical …, 2012 - jstage.jst.go.jp
Natural variations in the isotopic composition of molybdenum (Mo) are showing increasing
potential as a tool in geochemistry. Although the ocean is an important reservoir of Mo, data …
potential as a tool in geochemistry. Although the ocean is an important reservoir of Mo, data …
Re-evaluating digestion methods for highly siderophile element and 187Os isotope analysis: Evidence from geological reference materials
Here we evaluate measurement procedures currently used for the combined determination
of highly siderophile element concentrations (HSEs: Re, Ir, Os, Ru, Pt and Pd) and Os …
of highly siderophile element concentrations (HSEs: Re, Ir, Os, Ru, Pt and Pd) and Os …
Modern rather than Mesoarchaean oxidative weathering responsible for the heavy stable Cr isotopic signatures of the 2.95 Ga old Ijzermijn iron formation (South …
Previously reported stable Cr isotopic fractionation in Archaean paleosols and iron
formations (IFs) have been interpreted as a signature of oxidative weathering of Cr (III) to Cr …
formations (IFs) have been interpreted as a signature of oxidative weathering of Cr (III) to Cr …
Uranium isotope fractionation suggests oxidative uranium mobilization at 2.50 Ga
Geochemical data from late Archean sedimentary rocks point to photosynthetic O 2
production and at least intermittent occurrences of locally mild oxidative weathering and …
production and at least intermittent occurrences of locally mild oxidative weathering and …
Uranium in iron formations and the rise of atmospheric oxygen
The concept of the Great Oxidation Event (GOE), during which atmospheric oxygen rose
precipitously and perhaps to near-modern levels around 2.4–2.1 billion years ago (Ga), has …
precipitously and perhaps to near-modern levels around 2.4–2.1 billion years ago (Ga), has …
A model for the oceanic mass balance of rhenium and implications for the extent of Proterozoic ocean anoxia
AI Sheen, B Kendall, CT Reinhard, RA Creaser… - … et Cosmochimica Acta, 2018 - Elsevier
Emerging geochemical evidence suggests that the atmosphere-ocean system underwent a
significant decrease in O 2 content following the Great Oxidation Event (GOE), leading to a …
significant decrease in O 2 content following the Great Oxidation Event (GOE), leading to a …
Reconciling evidence of oxidative weathering and atmospheric anoxia on Archean Earth
Evidence continues to emerge for the production and low-level accumulation of molecular
oxygen (O2) at Earth's surface before the Great Oxidation Event. Quantifying this early O2 …
oxygen (O2) at Earth's surface before the Great Oxidation Event. Quantifying this early O2 …
Geochemistry of molybdenum in the continental crust
The use of molybdenum as a quantitative paleo-atmosphere redox sensor is predicated on
the assumption that Mo is hosted in sulfides in the upper continental crust (UCC). This …
the assumption that Mo is hosted in sulfides in the upper continental crust (UCC). This …
The Great Oxidation and a Siderian snowball Earth: MIF-S based correlation of Paleoproterozoic glacial epochs
PF Hoffman - Chemical Geology, 2013 - Elsevier
Existing correlation schemes between early Paleoproterozoic successions divorce the low-
latitude Makganyene glaciation in southern Africa from the Great Oxidation (GO), as …
latitude Makganyene glaciation in southern Africa from the Great Oxidation (GO), as …
Contributions to late Archaean sulphur cycling by life on land
Evidence in palaeosols suggests that life on land dates back to at least 2.76 Gyr ago,.
However, the biogeochemical effects of Archaean terrestrial life are thought to have been …
However, the biogeochemical effects of Archaean terrestrial life are thought to have been …