Trace elements at the intersection of marine biological and geochemical evolution
Life requires a wide variety of bioessential trace elements to act as structural components
and reactive centers in metalloenzymes. These requirements differ between organisms and …
and reactive centers in metalloenzymes. These requirements differ between organisms and …
[HTML][HTML] Products of the iron cycle on the early Earth
Traditional models for pre-GOE oceans commonly view iron as a critical link to multiple
biogeochemical cycles, and an important source of electrons to primary producers …
biogeochemical cycles, and an important source of electrons to primary producers …
Low‐Fe (III) greenalite was a primary mineral from Neoarchean Oceans
Banded iron formations (BIFs) represent chemical precipitation from Earth's early oceans
and therefore contain insights into ancient marine biogeochemistry. However, BIFs have …
and therefore contain insights into ancient marine biogeochemistry. However, BIFs have …
3.51 Ga old felsic volcanic rocks and carbonaceous cherts from the Gorumahisani Greenstone Belt–Insights into the Palaeoarchaean record of the Singhbhum Craton …
Abstract In the Singhbhum Craton of India, Palaeoarchaean greenstone sequences have so
far been reported from the south of the craton. In this study, we report a precise 3510±3 Ma …
far been reported from the south of the craton. In this study, we report a precise 3510±3 Ma …
Precambrian Si isotope mass balance, weathering, and the significance of the authigenic clay silica sink
EJ Trower, WW Fischer - Sedimentary geology, 2019 - Elsevier
The geological cycles of carbon and silicon are linked via the silicate weathering feedback,
but growing understanding of reverse weathering—the formation of authigenic clay minerals …
but growing understanding of reverse weathering—the formation of authigenic clay minerals …
[HTML][HTML] Aspects of the biological carbon cycle in a ca. 3.42-billion-year-old marine ecosystem
Microbial life on Earth was well established in the Paleoarchean, but insight into early
ecosystem diversity and thus, the complexity of the early biological carbon cycle is limited …
ecosystem diversity and thus, the complexity of the early biological carbon cycle is limited …
[PDF][PDF] Constraints on surface temperature 3.4 billion years ago based on triple oxygen isotopes of cherts from the Barberton Greenstone Belt, South Africa, and the …
Studies of Earth9s surface temperature before 3.0 Ga have focused heavily on the oxygen
isotopic composition of silica-rich sedimentary rocks called cherts. Interpretation of the …
isotopic composition of silica-rich sedimentary rocks called cherts. Interpretation of the …
Ferric iron triggers greenalite formation in simulated Archean seawater
IL Hinz, C Nims, S Theuer, AS Templeton… - …, 2021 - pubs.geoscienceworld.org
Sedimentary rock deposits provide the best records of (bio) geochemical cycles in the
ancient ocean. Studies of these sedimentary archives show that greenalite, an Fe (II) silicate …
ancient ocean. Studies of these sedimentary archives show that greenalite, an Fe (II) silicate …
Organic remains in late Palaeoproterozoic granular iron formations and implications for the origin of granules
Toward the end of the Palaeoproterozoic era, over 10 9 billion tonnes of banded (BIF) and
granular (GIF) iron formations were deposited on continental platforms. Granules in iron …
granular (GIF) iron formations were deposited on continental platforms. Granules in iron …
Sedimentology of the∼ 3.3 Ga upper Mendon Formation, Barberton Greenstone Belt, South Africa
EJ Trower, DR Lowe - Precambrian Research, 2016 - Elsevier
Abstract The Mendon Formation is the uppermost unit of the 3.5–3.26 Ga Onverwacht Group
in the Barberton Greenstone Belt, South Africa. It consists of a cyclic stack of komatiitic …
in the Barberton Greenstone Belt, South Africa. It consists of a cyclic stack of komatiitic …