Modern-style tectonic cycle in earliest Proterozoic time: Petrogenesis of dioritic-granitic rocks from the Daqingshan–Wulashan Terrane, southern Yinshan Block, North China Craton
Sign Up to like & getrecommendations! Published in 2020 at "Lithos"
DOI: 10.1016/j.lithos.2019.105322
Abstract: Abstract Archean granitoids provide us with an insight into the accretion and differentiation of early continental crust. We report the study of a dioritic to granitic rock association occurring in the Hongzhao region of the… read more here.
Keywords: dioritic granitic; daqingshan wulashan; wulashan terrane; proterozoic ... See more keywords
Platinum-group element and Au geochemistry of Late Archean to Proterozoic calc-alkaline and alkaline magmas in the Yilgarn Craton, Western Australia
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DOI: 10.1016/j.lithos.2020.105716
Abstract: Abstract The Yilgarn Craton of Western Australia is one of the largest Archean cratons in the world and is well-known for its metal endowment. In order to provide new insights into its metallogenic fertility and… read more here.
Keywords: craton; western australia; yilgarn craton; geochemistry ... See more keywords
Magnetotelluric evidence for an Archaean – Proterozoic lithospheric assemblage within the Cambay rift basin, western India, and its role in channeling of plume-derived fluids within the basin
Sign Up to like & getrecommendations! Published in 2021 at "Tectonophysics"
DOI: 10.1016/j.tecto.2021.229064
Abstract: Abstract The Cambay rift basin (CRB) in western India is a hydrocarbon producing basin, which has been extensively explored geophysically for hydrocarbon reserves. However, only a limited number of geophysical studies have been carried out… read more here.
Keywords: western india; cambay rift; proterozoic; basin ... See more keywords
Morphometric convergence between Proterozoic and post-vegetation rivers
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DOI: 10.1038/ncomms15250
Abstract: Proterozoic rivers flowed through barren landscapes, and lacked interactions with macroscopic organisms. It is widely held that, in the absence of vegetation, fluvial systems featured barely entrenched channels that promptly widened over floodplains during floods.… read more here.
Keywords: vegetation; convergence proterozoic; proterozoic; morphometric convergence ... See more keywords
Iron-dependent nitrogen cycling in a ferruginous lake and the nutrient status of Proterozoic oceans
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DOI: 10.1038/ngeo2886
Abstract: Nitrogen limitation during the Proterozoic has been inferred from the great expanse of ocean anoxia under low-O2 atmospheres, which could have promoted NO3− reduction to N2 and fixed N loss from the ocean. The deep… read more here.
Keywords: nitrogen; reduction; no3 reduction; dependent ... See more keywords
Strong evidence for a weakly oxygenated ocean–atmosphere system during the Proterozoic
Sign Up to like & getrecommendations! Published in 2022 at "Proceedings of the National Academy of Sciences of the United States of America"
DOI: 10.1073/pnas.2116101119
Abstract: Significance Earth’s transition from anoxic oceans and atmosphere to a well-oxygenated state led to major changes in nearly every surficial system. However, estimates of surface oxygen levels in the billion years preceding this shift span… read more here.
Keywords: system; ocean atmosphere; oxygen levels; oxygen ... See more keywords
Isotopic Signatures of Carbon Transfer in a Proterozoic Analogue Microbial Mat
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DOI: 10.1128/aem.01870-22
Abstract: The δ13C compositions of heterotrophic microorganisms are dictated by the δ13C compositions of their organic carbon sources. In both modern and ancient photosynthetic microbial mats, photosynthetic exudates are the most likely source of organic carbon… read more here.
Keywords: carbon; organic carbon; low oxygen; 13c compositions ... See more keywords
The Wechsel Gneiss Complex of Eastern Alps: an Ediacaran to Cambrian continental arc and its Early Proterozoic hinterland
Sign Up to like & getrecommendations! Published in 2020 at "Swiss Journal of Geosciences"
DOI: 10.1186/s00015-020-00373-3
Abstract: Many metamorphosed basement complexes in the Alps are polymetamorphic and their origin and geological history may only be deciphered by detailed geochronology on the different members including oceanic elements like ophiolites, arc successions, and continental passive… read more here.
Keywords: continental arc; variegated wechsel; wechsel gneiss; proterozoic ... See more keywords