| 滇西耿马四排山地区地质新认识 |
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| 引用本文： | 杨伟平,贾进华.滇西耿马四排山地区地质新认识[J].地层学杂志,1995(1). |
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| 作者姓名： | 杨伟平 贾进华 |
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| 作者单位： | 中国科学院南京地质古生物研究所，中国矿业大学地质系 |
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| 摘 要： | 滇西耿马四排山地区弄巴组（原南皮可组上部）盛产化石抱粉，通过５０多块样品的分析，获得了晚泥盆世末（Ｒｅｔｉｓｐｏｒａｌｅｐｉｄｏｐｈｙｔａ）叶至早石炭世早期（Ｇｒａｎｄｉｓｐｏｒａｓｐｉｃｕｌｉｆｅｒａ）孢粉组合。它们可以与西欧同期孢粉进行对比，并能部分地与澳大利亚同期孢粉对比。因原南皮河组岩性复杂，已经被刘本培等（１９９３）改为南皮河群。本文对原南皮河组上部地层进行了研究并命名为弄巴组，其时代为晚泥盆世末至早石炭世。通过抱粉相分析和野外沉积标志的观察以及对孢粉比较学的研究，从而获得了对该套地层沉积相和植物古地理方面的新认识。
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| 关 键 词： | 孢粉，晚泥盆世一早石炭世，植物区系，沉积相，耿马，滇西 |
The new knowledges about the geology in Gengma,W.Yunnan |
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| Yang Weiping, Jia Jinghua.The new knowledges about the geology in Gengma,W.Yunnan[J].Journal of Stratigraphy,1995(1). |
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| Authors: | Yang Weiping Jia Jinghua |
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| Abstract: | Very abundant miospores have been extracted born the Longba Formation (the lower horizons of theformer Nanpihe Formation, now the Nanpihe Group) in Gengma, W. Yunnan. Retispora lepidophyta assemblage ranges in age from latest Devonian and Early Carboniferous to Late Permian. It also can'be correlated very well with those in West Europe and Australia respectively. The palynofacies analysis together with the sedimentary observation in field suggest that the former Nanpihe Formation is deposited in a relatively deeper marine slope environments rather than shallow paralic ones. A few Gondwana species found in Gengma indicate a very close relationship between West Yunnan and Gondwanaland in both tectonic and phytogeography. |
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| Keywords: | miospore devonian-Carboniferous sedimentary environment Gengma W Yunnan |
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