We present here a first-order analysis of the Neoproterozoic continental rift basins in South China, focusing on the north-south trending Kangdian basin in the western part, and the Yangtze-side of the northeasterly-trending Nanhua basin. The…
sinian
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The Ediacaran Period was a critical time in the history of life and Earth. Understanding the complex interactions between geological and biological events during this interval requires high-resolution chronostratigraphy. Thanks to its uniquely…
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Organic matter of the Sinian and early Cambrian black shales on the Yangtze Platform belongs to the light carhon group of isotopes with the δ13C values from - 27% to - 35 which are lower than those of the contempomneously deposited carbonates and…
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The Neoproterozoic Doushantuo Formation, South China, preserves a unique assemblage of early multicellular fossils and overlies rocks, which are thought to have formed during an ice age of global extent. The age of this formation is thus critical…
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Among the Sinian to Triassic strata in South China, the stratiform, quasi-stratiform and lenticular metallic deposits in association with hydrothermal sedimentation mainly occur in the four periods: (1) the Sinian Datangpo interglacial period, (2)…
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Organic matter of the Sinian and early Cambrian black shales on the Yangtze Platform belongs to the light carhon group of isotopes with the δ13C values from - 27% to - 35 which are lower than those of the contempomneously deposited carbonates and…
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Two new horizons with macroscopic fossils are reported in the Doushantuo Formation, Ediacaran System, from the Yangtze Gorges area. The fossils were discovered in the lower and middle black shales of the Doushantuo Formation in the new section at…
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The sedimentary evolution of the northern Upper Yangtze plate is affected by South Qinling structure on the north, Longmenshan structure on the west, and also long-term inherited uplift of Hannan paleocontinent on the north. In Sinian-Early…
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Based on a detailed study of ore fabrics, microbial remains, stable isotopes, and organic matter, the characteristics of the Late Sinian Gaoyan Mn-carbonate ores can be summarized as follows: (1) Ores have massive, laminated, spheroid-banded, and…
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Well-preserved, three-dimensional microfossils are reported from a 3.7 m thick black phosphorite bed in the Sinian Doushantuo Formation at Wengan Phosphate Mine, Guizhou Province, southwest China. The diverse assemblage, observed in thin sections,…
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A number of lead-zinc sulphide deposits have been discovered in recent years in dolomitic rocks of the Upper Sinian Dengying Formation in the Dadu River valley region, Sichuan Province, China. The lead-zinc mineralization is closely associated with…
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Microtubular metazoan fossils with multibranches are found at least 4 times from the Sinian (Ediacarian) Doushantuo Formation at Wengan, Guizhou, China. Their living mode should be the benthonic colony with higher ability of asexual reproduction.…
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In the Hunan-Guizhou-Guangxi area there have developed very thick bedded siliceous rocks of the late Sinian. The rocks have a fairly pure composition, with an average content of siliceous minerals exceeding 95%. They are relatively rich in Fe and…
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A detailed stable isotopic profile measured systematically across a thick Upper Neoproterozoic (Sinian) carbonate succession at Danba, western Yangtze Platform, China, records an overall positive δ13CCarb excursion. Even having experienced…
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A great amount of black rock series has been found in the Upper Sinian Members 2 and 4 of the Jinjiadong Formation, middle-upper Liuchapo Formation and the Lower Cambrian Xiaoyanxi Formation in West Hunan, which is associated with periodic sea-level…
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The lower Cambrian Niutitang Formation hydrocarbon source rocks at the Dingshan- Lintanchang structure in the southeast Sichuan Basin were of medium-good quality with two excellent hydrocarbon-generating centers developed in the periphery areas,…
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The Minle Mn ores occur at the base of the Early Sinian Minle Formation black shales, on the southeast limb of the Motianling anticline. These rhodochrosite ores are rich in organic carbon and fossil algae and formed in a bay or lagoon on a…
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Sinian is one of the main periods of the formation of manganese deposits in China. Sinian manganese deposits are mainly hosted in carbon-rich black shale and siliceous shale formed during the Sinian interglacial period. The composition of manganese…
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SEM observation of the earliest skeletal fossils from the late Sinian Dengying Formation in southern Shaanxi, China indicates that the tube wall of Sinotubulites lev is is encrusted by phosphate spher ical and filamentous structure, possibly…
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The microfossils described and illustrated in this paper were discovered in black cherts of the Shibantan Member of the upper Sinian Dengying Formation in the Yangtze Gorges, western Hubei. All of the microfossils were observed in petrographic…
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