New Data of Phosphatized Microfossils from the Doushantuo Formation in Baizhu, <?xml:namespace prefix = st1 ns = "urn:schemas-microsoft-com:office:smarttags" /><st1:place w:st="on"><st1:City w:st="on">Baokang County</st1:City>, <st1:State w:st="on">Hubei</st1:State></st1:place> Province, and Their Stratigraphic Implications <?xml:namespace prefix = o ns = "urn:schemas-microsoft-com:office:office" /><o:p></o:p>

New Data of Phosphatized Microfossils from the Doushantuo Formation in Baizhu, Baokang County, Hubei Province, and Their Stratigraphic Implications

详细信息

责任者：Yin Chongyu (Institute of Geology ; Chinese Academy of Geological Sciences ; Beijing 100037 ; China) ; Liu Pengju
刊名：Acta Geoscientica Sinica
出版年：2009
卷期：30(4)
关键词：陡山沱组 ; Doushantuo Formation ; 超微化石 ; nannofossils ; 湖北 ; Hubei Province
页码：p.447-456
图表：5 illus., 41 refs.
分类号：1101
issnNo：ISSN1006-3021
isbnNo：CN11-3474/P

摘要

The authors recently reinvestigated the Doushantuo Formation in Baizhu, Baokang, Hubei Province and systematically collected samples to do examination. Besides the discovery of the above microfossils, the authors also found large acanthomorphic acritarchs Papillomembrana compta, Appenendisphaera sp., globular microfossil Megasphaera inornata, Megaclonophycus onustus and most common filament Salome hubeiensis in the Yangtze Gorges. Studies demonstrate that the fossiliferous horizon of the Doushantuo Formation reported here is roughly equivalent to the 2^nd Member of the Doushantuo Formation in the Yangtze Gorges and the upper phosphate-rich strata of the Doushantuo Formation in Weng’an area. These new data further prove that the lower assemblage composed of multicelular algae, large acanthomorphic acritarchs, globular microfossils, coccoidal and filamentous cyanobacteria found in the 2^nd Member in the Yangtze Gorges has a wide distribution and stable horizon.

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