| 西藏西北部晚二叠世地层新资料 |
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| 引用本文： | 吴瑞忠,蓝伯龙.西藏西北部晚二叠世地层新资料[J].地层学杂志,1990,14(3):216-221. |
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| 作者姓名： | 吴瑞忠 蓝伯龙 |
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| 摘 要： | <正> 藏北地区的晚二叠世地层,文世宣等(1979)报导了羌塘东部双湖热觉茶卡一带的上二叠统,命名为热觉茶卡组。梁定益等(1983)在羌塘西部多玛附近发现位于下二叠统之上和下三叠统之下的一套含Waagenophyllum和腕足类的碎屑岩和碳酸盐地层,称吉普日阿群。诺林(1946)把塔什立克湖至窝尔巴错一带的二叠系称塔什立克湖群,该群的顶
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| 关 键 词： | 晚二叠世 地层 西藏 西北部 |
Recent information on the Upper Permian rocks of Northwest Xizang |
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| Abstract: | The: Upper Permian section in the Rehepan area can be divided into the Rehepan and Qingshuihe Formations.The Rehepan Formation (about 223 in thick) contains limestone and organic clastic limestone.Its bottom is in conformable with the top of the Lower Permian.The Rehepan Formation is rich in fusuhnids:Cudonofustella,Sphaerulina,Rcichna tcnuissitnti, corals: Waagcnnphyllum Lapho-phyllidium; hrachiopods: Leptodus, Linoproductidae; trilobite: Pscudophillipsta; bryozoan and gastropoda.It is of early Late Permian age and its horizon corresponds to the Longtan Stage of South China.The Qingshuihe Formation consists of limestone :tnd organic clastic limestone intercalated with a small amount of volcanic rocks (andesite), about 661 mthick.It overlies conformably the Rehepan Formation.According to Domar section, its top and Lower Permian deposited continuously.This formation contains fusulinids:Palaeofusutitra,Sphacntlina.Reichclina tenunssima corals; Waagcnophyllum, Para-caninia, Yatsengia; hrachiopods: Squamularia, Leptodus, Chancres.foraminifera and gastropoda.It belongs to upper Late Permian and its horizon corresponds to Changxing Stage in South China. |
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