| 华南新元古代宏体化石特征及生物地层序列 |
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| 关键词:South China Neoproterozoic macrofossil assemblages biostratigraphic successions stratigraphic correlation |
| 基金项目:中国地质调查局工作项目(1212010611801-3)、中国地质科学院地层学及古生物学重点实验室专项研究基金(JB0705)和中国地质科学院地质研究所所长基金(J0716)及国家自然科学基金项目(40672022)、科技部基础研究项目(2006FY120300-2) |
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| Neoproterozoic Macrofossil Records in South China and Biostrati-graphic Successions and Correlations |
| Neoproterozoic strata in South China (780~542 Ma) have preserved a lot of classical sections and abundant macrofossils, and hence long served as the contrast standard of the Neoproterozoic stratigraphy in China, especially of the glacial Nanhuan System and the Sinian (Ediacaran) System. The authors reinvestigated the im-portant sections and fossil sites and collected macrofossils respectively from “Houjiashan Biota” in Jiangchuan, Yunnan Province, and “Wenghui Biota” in Jiangkou, Guizhou Province. On the basis of the above study and other latest research advancements, the authors integrated and synthesized the macrofossil features and assemblages of the Upper Neoproterozoic strata in South China and brought forward the biostratigraphic successions as well. The macrofossil records indicate that, in company with the notable climate and environmental changes, the multicellu-lar metazoans and metaphytes experienced a series of important biological evolutionary incidents in this period, such as the organ and form differentiations, the growth innovations and the further diversification of biological structures and functions. This kind of diverse developments can be generally divided into three stages represented by three macrofossil assemblages in the Sinian (Ediacaran) Period: (1) the macroscopic algae fossil assemblage Anhuiphyton-Thallophyca-Paramecia, (2) the macrofossil assemblages Enteromorphites-Doushantuophyton- Eoandromeda-Sinospongia, and (3) the macrofossil assemblages Paracharnia-Gaojiashania-Cloudina- Longfeng-shania. Due to the relatively unique macrofossil assemblages in the Sinian strata of South China, its comparison with the Ediacara-type Biota occurring abundantly abroad in the strata postdating the last glacilation of Neopro-terozoic (including the Avalon Biota, the Pound/White Sea Biota and the Nama Biota) remains to be studied in detail in future. The correlations of the Neoproterozoic macrofossils in South China and those in North China has also been discussed in this paper. |
| TANG Feng,YIN Chong-yu,LIU Peng-ju,GAO Lin-zhi,WANG Zi-qiang.2009.Neoproterozoic Macrofossil Records in South China and Biostrati-graphic Successions and Correlations[J].Acta Geoscientica Sinica,30(4):505-522. |
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