| 滇西保山地区岩关（杜内）阶至大塘（维宪）阶界线 |
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| 引用本文： | 姜建军.滇西保山地区岩关（杜内）阶至大塘（维宪）阶界线[J].现代地质,1994,8(4):421-429. |
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| 作者姓名： | 姜建军 |
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| 作者单位： | 地质矿产部国际合作司 |
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| 摘 要： | 依据保山地区岩关晚期地层至大塘早期地层连续发育，化石丰富及动物群既具酉欧区系分子，又具北美区系分子等特征，提出这一地区是我国岩关阶至大塘阶界线层型理想地区，易于与西欧和北美地层对比。
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| 关 键 词： | 岩关阶，大塘阶，生物地层界线 |
BIOSTRATIGRAPHICAL BOUNDARY BETWEEN THE YANGUANIAN AND DATANGIAN IN BAOSHAN AREA, WESTERN YUNNAN |
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| Jiang Jianjun.BIOSTRATIGRAPHICAL BOUNDARY BETWEEN THE YANGUANIAN AND DATANGIAN IN BAOSHAN AREA, WESTERN YUNNAN[J].Geoscience——Journal of Graduate School,China University of Geosciences,1994,8(4):421-429. |
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| Authors: | Jiang Jianjun |
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| Abstract: | On the basis of brachiopods, the biostratigraphical boundary between the Yanguanianand Dantangian in the South China was put previously between the Eochoristites-MartinielMartiniella assemblage and the Megachonetes zimmermani-Delepinea subcarinata assemblage. Thepresent study shows that Syringothyris texta-Productina margaritacea Delepinea subcarinata assemblage represents the lowest horizon of the-Datangian (Visean), which may correlate directly with the V1a zone of Belguim and the Keokuk limestone of the United States. |
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| Keywords: | Yanguanian Datangian biostratigraphical boundary |
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