| Microorganisms Linked to Neoproterozoic Microspar Carbonate Sedimentation in the Jilin-Liaoning Area |
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| 作者姓名： | GE Ming KUANG Hongwei MENG Xianghua and George FURNISS Institute of Sedimentary Basin China University of Geoscience Xueyuan Ro Beijing China Yangzi University Nanjing Jiangsu China Geology |
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| 作者单位： | GE Ming，KUANG Hongwei，MENG Xianghua and George FURNISS Institute of Sedimentary Basin，China University of Geoscience，Xueyuan Road，Beijing 100083，China Yangzi University，Nanjing，Jiangsu，China 210000 Geology Department，University of Montana，Missoula，Montana 59812，USA |
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| 摘 要： | Molar-tooth carbonate refers to a sort of rock that has ptygmatical folded structure comparable to the ivory. This kind of carbonate exists in a special time range (from Middle to Neoproterozoic). Its origin and the possibility to use it in stratigraphic correlation of the paleocontinent is the key task of the IGCP447, a project on Proterozoic molar tooth carbonates and the evolution of the earth (2001-2005). The importance lies in that the molar-tooth structure is the key to solving problems related to Precambrian biological and global geochemical events. The molar-tooth structure is associated with microorganisms. Development and recession of such carbonates have relations with the evolution process of early lives and abrupt changes in sea carbonate geochemistry. In recent years, based on researches on petrology, geochemistry and Sr isotope of molar-tooth carbonate in the Jilin-Liaoning and Xuzhou-Huaiyang area, the authors hold that it can be used as a marker for stratigraphic sequence and sedimentary
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| 关 键 词： | 微晶石碳酸盐 摩尔含量 新生代 沉积环境 微生物 |
Microorganisms Linked to Neoproterozoic Microspar Carbonate Sedimentation in the Jilin-Liaoning Area |
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| Authors: | GE Ming KUANG Hongwei MENG Xianghua and George FURNISS Institute of Sedimentary Basin China University of Geoscience Xueyuan Roa Beijing China Yangzi University Nanjing Jiangsu China Geology |
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| Abstract: | Molar-tooth carbonate refers to a sort of rock that has ptygmatical folded structure comparable to the ivory. This kind of carbonate exists in a special time range (from Middle to Neoproterozoic). Its origin and the possibility to use it in stratigraphic correlation of the paleocontinent is the key task of the IGCP447, a project on Proterozoic molar tooth carbonates and the evolution of the earth (2001-2005). The importance lies in that the molar-tooth structure is the key to solving problems related to Precambrian biological and global geochemical events. The molar-tooth structure is associated with microorganisms. Development and recession of such carbonates have relations with the evolution process of early lives and abrupt changes in sea carbonate geochemistry. In recent years, based on researches on petrology, geochemistry and Sr isotope of molar-tooth carbonate in the Jilin-Liaoning and Xuzhou-Huaiyang area, the authors hold that it can be used as a marker for stratigraphic sequence and sedimentary fades analyses. |
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| Keywords: | molar tooth carbonate Neoproterozoic sedimentary environment microorganisms origin |
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