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| 大别群微古植物的发现及其时代的认识 | |
| 引用本文： | 赵银胜, 李金华. 1988. 大别群微古植物的发现及其时代的认识. 地质通报, (2): 49-53. |
| 作者姓名： | 赵银胜 李金华 |
| 作者单位： | 湖北省地矿局区调队 |
| 摘 要： | 本文对大别群的微古植物组合特征及其时代作了分析,并根据沉积建造,变质作用、含矿性及地层接触、同位素年龄等方面的资料,对大别群与邻区相当地层的对比问题,提出了自已的认识。 |
THE DISCOVERY OF A MICROPALEOFLORA IN THE DABIE GROUP AND ITS AGE |
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| ZHAO Yin-sheng, LI Jin-hua. 1988. THE DISCOVERY OF A MICROPALEOFLORA IN THE DABIE GROUP AND ITS AGE. Geological Bulletin of China, (2): 49-53. | |
| Authors: | ZHAO Yin-sheng LI Jin-hua |
| Abstract: | The Dabie Group distributed in northeastern Hubei province is composed of thick metamorphic strata bearing a banded siliceous ironformation. It is covered unconformably by the phosphorus-bearing bed at the base of the Hong’an Group and its base is not found. It is one of the oldest strata, located between the South and North China terrains. In recent years, the authors have for the first time found a micropaleoflora, which contains ten genera and fourteen species. The main species are: Margominuscula tennela Naum., M. antiqua Naum., Leiominuscula minuta Naum., L. incrassata Sin et Liu, Trachyminuscula microrugosa Naum., Leiopsophosphaera sp., Zonosphaeridium minutum Sin, Dictyosphaera sp., Trematosphaeridium minutum Sin et Liu, Polyporata obsoleta Sin et Liu, Lignum punctulosum Sin et Liu,? Eosynevhococcus moorei Hofmann, etc. On the basis of regional stratigraphic correlation, isotope dating and an analysis of sediments and geological events, the authors consider that the age of the Dabie Group is early Proterozoic to late Archean. |
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