Results 31 to 40 of about 1,401 (174)
The occurrence of Dickinsonia in non-marine facies
Estudios Geologicos, 2019 Dickinsonia in the central Urals occurs in a succession transitional from marginal marine to non-marine. Even within this sequence Dickinsonia appears to be restricted to the least marine facies interpreted as a coastal lagoon surrounded by tidal flats ...
N. I. Bobkov +3 more
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Frontiers in Earth ScienceStrike-slip faults are closely related to the enrichment of hydrocarbon resources, with a series of large oil and gas fields associated with strike-slip faults discovered in regions such as the Ordos Basin in China and the West Siberian Basin.
Yongjing Cen +4 more
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Recurrent photic zone euxinia limited ocean oxygenation and animal evolution during the Ediacaran
Nature Communications, 2023 The Ediacaran Period (~635–539 Ma) is marked by the emergence and diversification of complex metazoans linked to ocean redox changes, but the processes and mechanism of the redox evolution in the Ediacaran ocean are intensely debated. Here we use mercury
Wang Zheng +8 more
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PLoS Biology, 2022 The first animals appear during the late Ediacaran (572 to 541 Ma); an initial diversity increase was followed reduction in diversity, often interpreted as catastrophic mass extinction.
Rebecca Eden +2 more
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Uncovering the Ediacaran phosphorus cycle
Nature, 2023 Phosphorus is a limiting nutrient that is thought to control oceanic oxygen levels to a large extent1-3. A possible increase in marine phosphorus concentrations during the Ediacaran Period (about 635-539 million years ago) has been proposed as a driver for increasing oxygen levels4-6.
Matthew S. Dodd +13 more
openaire +4 more sources
The Paleontological Society Special Publications, 1992 Ediacaran taxa are a characteristic element of latest Precambrian biotas, with an effectively global distribution. Their time range is not well understood, but with one possible exception from western Canada Ediacaran faunas appear always to post-date the late Precambrian glaciations.
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Ediacaran oxidation and biotic evolution [PDF]
Nature, 2007 The link between the radiation of various lineages of eukaryotes in the latest Proterozoic and massive environmental changes--oxygenation, global ice ages and bolide impact--is the focus of much research interest. Fike et al. use carbon and sulphur isotope-chemostratigraphic data from Oman to propose three stages of oxidation in the Ediacaran oceans ...
Kathleen, Grey, Clive R, Calver
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Filamentous Connections between Ediacaran Fronds [PDF]
Current Biology, 2020 Fossils of the Ediacaran macrobiota (∼571-539 mya) record phylogenetically diverse marine palaeocommunities, including early animals, which pre-date the "Cambrian Explosion" [1-4]. Benthic forms with a frondose gross morphology, assigned to the morphogroups Rangeomorpha [5] and Frondomorpha (see also Arboreomorpha) [6-8], are among the most temporally ...
Liu, Alexander G, Dunn, Frances S
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Ediacaran Araba Complex of Jordan [PDF]
GeoArabia, 2015 ABSTRACTThe Ediacaran Araba Complex in Jordan is defined and described for the first time in lexicon style, with an emphasis on the sedimentary, volcanic and volcaniclastic units outcropping adjacent to Wadi Araba, and from seismic and deep exploration well data. The Araba Complex ranges in age from ca.
Powell, John H. +2 more
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World's fastest 10 000‐m breakthrough: The XY‐22 well redefines deep‐earth access in the Tarim Basin
Deep Underground Science and Engineering, EarlyView.The Tarim Basin in northwestern China hosts one of the world's deepest petroleum systems, exemplified by the XY‐22 ultra‐deep well (bottom depth: 11 116 m; ~220°C, ~145 MPa). This study integrates tectonic mapping, geological cross‐sections, ultraviolet fluorescence microscopy, and optical photothermal infrared (OPTIR) spectroscopy to characterize ...
Qingwen Tan +4 more
wiley +1 more source