Carbon and oxygen isotope characteristics of carbonate rocks in the Mesoproterozoic Jixian System of the Ordos Basin and their implications [PDF]
Scientific Reports, 2023 The paleoenvironment of Jixian carbonate rocks in the Mesoproterozoic Ordos Basin is studied by carbon and oxygen isotope analyses, diagenetic environment analysis, and the restoration of paleosalinity and paleotemperature.
Liu Xiaofeng +5 more
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Dynamic redox and nutrient cycling response to climate forcing in the Mesoproterozoic ocean [PDF]
Nature Communications, 2023 Controls on Mesoproterozoic ocean redox heterogeneity, and links to nutrient cycling and oxygenation feedbacks, remain poorly resolved. Here, we report ocean redox and phosphorus cycling across two high-resolution sections from the ~1.4 Ga Xiamaling ...
Yafang Song +11 more
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Stromatolites and pulsed oxygenation events in the Mesoproterozoic Longjiayuan formation of western Henan: evidence for life-environment co-evolution [PDF]
Scientific ReportsThe oxygen level in the ocean and atmosphere played a crucial role in the development of Precambrian stromatolites. The Mesoproterozoic represents a critical interval in Earth’s history, characterized by persistently low atmospheric and oceanic oxygen ...
Qianqian Li, Deshun Zheng, Fengbo Sun
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An expansive global oxygenation of Earth’s surface environments 1.4 billion years ago [PDF]
Nature CommunicationsThe notion of biogeochemical stasis during the Mesoproterozoic era (1.6 to 1.0 billion years ago, Ga) has been increasingly challenged by evidence of transient episodes of increased oxygen (O2) levels in localized basins.
Hao Yan +13 more
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High-latitude platform carbonate deposition constitutes a climate conundrum at the terminal Mesoproterozoic [PDF]
Nature CommunicationsDuring the Mesoproterozoic Era, 1600 to 1000 million years ago, global climate was warm with very little evidence of glaciation. Substantial greenhouse warming would have been required to sustain this ice-free state given 5-18% lower solar luminosity ...
Michiel O. de Kock +5 more
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Lithostratigraphy of the Mesoproterozoic Vemork formation, central Telemark, Norway [PDF]
Bulletin of the Geological Society of Finland, 2007 The Vemork formation forms a c. 2 km thick volcanic-sedimentary unit above the 1510 – 1500 Ma old Tuddal felsic volcanite formation, the oldest unit of the Mesoproterozoic Telemark supracrustals in southern Norway.
K. Laajoki, F. Corfu
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Tonian carbonaceous compressions indicate that Horodyskia is one of the oldest multicellular and coenocytic macro-organisms [PDF]
Communications Biology, 2023 Macrofossils with unambiguous biogenic origin and predating the one-billion-year-old multicellular fossils Bangiomorpha and Proterocladus interpreted as crown-group eukaryotes are quite rare.
Guangjin Li +7 more
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Phylotranscriptomics unveil a Paleoproterozoic-Mesoproterozoic origin and deep relationships of the Viridiplantae [PDF]
Nature Communications, 2023 The Viridiplantae comprise two main clades, the Chlorophyta (including a diverse array of marine and freshwater green algae) and the Streptophyta (consisting of the freshwater charophytes and the land plants).
Zhiping Yang +9 more
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Global implication of mesoproterozoic (~ 1.4 Ga) magmatism within the Sette-Daban Range (Southeast Siberia) [PDF]
Scientific Reports, 2021 Mesoproterozoic period included several global tectonic events like break-up of Nuna and formation of Rodinia. However, although Siberia is a significant piece of both supercontinents, Mesoproterozoic time is marked by quiescence of magmatic and tectonic
Sergey V. Malyshev +6 more
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Shiyou shiyan dizhi, 2023 In order to evaluate the shale oil prospecting potential of the Mesoproterozoic Hongshuizhuang Formation in the Jibei Depression, the analyses of routine Rock-Eval pyrolysis, matrix porosity and permeability, mercury intrusion and nitrogen adsorption ...
Zhiming LI +5 more
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