In recent years, a series of significant oil and gas exploration breakthroughs have been achieved in the Sinian Dengying Formation at platform margin of the paleo-uplift in the central Sichuan Basin, leading to the identification of a play with potential to add gas-in-place of trillion cubic meter (Wei et al., 2022).At the same time, exploration breakthroughs were also …
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During deposition of the Doushantuo Formation, the Upper Yangtze area contained a variety of environments, including terrigenous shorefaces, mixed tidal flats, lagoons, shelves, slopes and bathyal ...
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On the discovery of Macrofssils algae from the late Sinian in Eastern Yangtze Gorges, south China, Acta Botanica Sinica, 1984, 26(5): 558–560. Google Scholar Chen, M., Xiao, S., Discovery of the macrofossils in the upper Sinian Doushantuo Formation at Miaohe, eastern Yangtze Gorges, Scientia Geological Sinica, 1991, 4: 317–324.
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During deposition of the Doushantuo Formation, the Upper Yangtze area contained a variety of environments, including terrigenous shorefaces, mixed tidal flats, lagoons, shelves, slopes and bathyal ...
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The lithology of the upper Sinian Doushantuo Formation is characteristic of four different lithofacies, and the thickness of which is different in drilling cores and outcrop sections with ...
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PDF | On Feb 1, 2015, Yangand others published Sequence stratigraphic subdivision and correlation of the Ediacaran (Sinian) Doushantuo Formation of Yangtze Plate, South China | Find, read and ...
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Chert of the Upper Sinian Doushantuo Formation near Changyang, western Hubei, China, contains an exceptionally well-preserved assemblage of spinose, spheroidal, and filamentous microfossils belonging to nineteen species. In this assemblage at least fifteen taxa are recognised to be plankton and only four to be microbenthos. The existing of large acanthomorphic …
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The fossils were discovered in the lower and middle black shales of the Doushantuo Formation in the new section at Sandouping Town, Zigui County, Hubei Province. …
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The Sinian Doushantuo Formation is the oldest shale gas reservoir discovered in the world, which contains good shale gas shows as the Eyangye-1 and Zidi-1 wells in the Yichang Region of western Hubei province, China. The shales in …
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Compared with the indicators of the main mud shale gas production areas in the USA and China, Upper Sinian Doushantuo Formation mud black shale in the north of Middle Yangtze region has a larger thickness, relatively low organic matter, higher thermal evolution degree, higher brittleness mineral content, lower clay mineral content, lower shale ...
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Simplified geological map of China (left) and the Yangtze Gorges area. Acanthomorphs described in this paper were collected from the upper Doushantuo Formation chert nodules at the Wangfenggang ...
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Silicified microfossils preserved in chert nodules of the Doushantuo Formation in the Yangtze Gorges area of South China have great potential to improve the biostratigraphic subdivision …
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A negative δ 13 C excursion in the upper Doushantuo Formation in the shelf-margin facies has been correlated with different ... Sedimentary lithofacies characteristics and sweet-spot interval characterization of the Sinian Doushantuo Formation in Upper Yangtze Platform, South China. China Geology, Volume 2, Issue 3, 2019, pp. 261-275.
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The Sinian Doushantuo Formation is the oldest shale gas reservoir discovered in the world, which contains good shale gas shows as the Eyangye-1 and Zidi-1 wells in the …
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In the Late Sinian, Doushantuo Formation, a set of source rocks composed of black shale, dark grayish black micritic limestone and carbon-bearing mudstone, was divided into a second-order sequence ...
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The Ediacaran Doushantuo Formation in the Yangtze Gorges area (Fig. 1.2) contains abundant silicified cyanobacterial coccoids and filaments (Y. Zhang et al., 1998), acanthomorphic acritarchs (Zhou et al., 2007), multicellular algae (Xiao, 2004), and possible animal embryos (L. Yin et al., 2007).
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A fossil assemblage of diverse megascopic benthic algae is well preserved on bedding planes in black siliceous shales of the Neoproterozoic Lantian Formation (upper Sinian) at Lantian village, Xiunng county, Anhui Province, South China. Based on morphological differences, 12 taxa are recognized.
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The Doushantuo Formation in the Yangtze Gorges area, constrained between 635.2 ± 0.6 and 551.1 ± 0.7 Ma (), is divided into four lithostratigraphic members ().At the Jiulongwan section [supporting information (SI) Fig. 3], member I represents an ≈5-m-thick cap dolostone overlying the Nantuo glacial diamictite and contains a suite of enigmatic …
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Semantic Scholar extracted view of "A New Assemblage of Megafossil-Miaohe Biota Form Upper Sinian Doushantuo Formation, Yangtze Gorges." by Meng'e Chen et al. Skip to search form Skip to main content Skip to account menu. Semantic Scholar's Logo. Search 224,533,678 papers from all fields of science ...
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The Weng'an Biota occurs within the Ediacaran Doushantuo Formation (551 – 635 Ma, Condon et al. 2005) of south China ().In addition to the phosphatized microfossils from Weng'an, this formation has yielded silicified microfossils (Yin et al. 2004) and macrofossils that are preserved as 2D carbonaceous compressions including macro-algae (Xiao et al. 2002) and the putative …
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Acanthomorphic acritarchs of the Doushantuo Formation from an upper slope section in northwestern Hunan Province, South China, with implications for early-middle Ediacaran biostratigraphy. ... The geological significance of newly discovered microfossils from the upper Sinian (Doushantuo age) phosphorites. Scientia Geologica Sinica (1986)
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Neoproterozoic strata are widely developed in the Upper Yangtze region of South China, among which the Sinian Dengying Formation has been discovered with numerous large gas fields in the Sichuan Basin, and hence they have become an essential domain for natural gas exploration and development.
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Based on the analysis of welling, logging, seismic information and outcrops, the formation and evolution of Upper Sinian to Lower Cambrian intraplatformal basin (IPB) in Sichuan Basin was studied ...
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Based on drilling cores and outcrop section investigation, a systematical study on fundamental geology was carried out. We also analyzed the sequence stratigraphy and …
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Macroscopic carbonaceous compressions in a terminal Proterozoic shale: A systematic reassessment of the Miaohe biota, South China. Journal of Paleontology, 76:347–376. XUE, Y., T. TANG, AND C. YU. 1992. Discovery of the oldest skeletal fossils from upper Sinian Doushantuo Formation in Weng'an, Guizhou, and its significance.
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Stratigraphy and sedimentary environment of the Upper Sinian Doushantuo Formation in Weng'an phosphorite deposit, Guizhou Province. Journal of Stratigraphy, 22 : 308 – 314 . Google Scholar
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The geological significance of newly discovered microfossils from the Upper Sinian (Doushantuo age) phosphorites. Sci. Geol. Sin., 1 (1986 ... Chen and Wang, 1977. M. Chen, Y. Wang. Note on the tubular metazoan fossils from the Dengying Formation of the upper Sinian System in the Gorge District of the Yangtze River. Kexue Tongbao (Chinese), 22 ...
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The upper Hocosphaeridium anozos-Hocosphaeridium scaberfacium assemblage occurs in the Dou-3 Member of the Doushantuo Formation, and all microfossils of this assemblage are found in the stratigraphic intervals defined by second positive δ 13 C excursion (EP2). By comparison with the lower Tianzhushania spinosa assemblage, acanthomorphic acritarchs of …
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(1) The sedimentary sequence and stratigraphic distribution of the Sinian Doushantuo Formation in the middle-upper Yangtze region were controlled by paleouplifts and marginal sags.
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A new assemblage of megafossils— Miaohe biota from Upper Sinian Doushantuo Formation, Yangtze Gorges (in Chinese with English abstract). Acta Palaeontol Sin, 1994, 33: …
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