| 西藏措勤地区侏罗系质疑 |
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| 引用本文： | 赵鹏肖,石和.西藏措勤地区侏罗系质疑[J].沉积与特提斯地质,2003,23(3):40-43. |
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| 作者姓名： | 赵鹏肖 石和 |
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| 作者单位： | 成都理工大学,地球科学学院,四川,成都,610059 |
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| 基金项目： | 1∶2 5万《措勤县幅》区域地质调查 (2 0 0 0 1 3 0 0 0 0 91 71 )。 |
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| 摘 要： | 西藏措勤地区一直被认为有被分别称为达雄群和接奴群的中上侏罗统，然而在1：25万《措勤县幅》区调工作中，在该区的接奴群、达雄群中发现了较丰富的双壳、腹足、海胆、菊石及植物化石，这些化石组合具早白垩世生物群面貌。根据这些化石组合及地层对比，研究区内的接奴群和达雄群应划归下白垩统则弄群上部。
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| 关 键 词： | 措勤地区 达雄群 接奴群 则弄群上部 西藏 早白垩世 |
| 文章编号： | 1009-3850(2003)03-0040-04 |
| 收稿时间： | 2003/5/6 0:00:00 |
| 修稿时间： | 2003年5月6日 |
Discussions on the Jurassic strata in the Coqen region, Xizang |
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| ZHAO Peng-xiao,SHI He.Discussions on the Jurassic strata in the Coqen region, Xizang[J].Sedimentary Geology and Tethyan Geology,2003,23(3):40-43. |
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| Authors: | ZHAO Peng-xiao SHI He |
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| Institution: | Chengdu University of Technology, Chengdu 610059, Sichuan, China |
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| Abstract: | The strata in the Coqen region, Xizang have long been defined as the Middle and Upper Jurassic strata of the Daxiong and Jienu Groups. The authors argued, on the basis of abundant fossils including bivalves, gastropods, echinoids, ammonoids and plant remains found in these strata during the regional geological survey of the 1:250 000 Coqen Sheet, that the preceding fossils are characteristic of the features of the Early Cretaceous biotas. According to the fossil assemblages and stratigraphic correlation, the strata of the Daxiong and Jienu Groups should be redefined to the upper part of the Lower Cretaceous Zenong Group. |
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| Keywords: | Coqen Daxiong Group Jienu Group the upper part of the Zenong Group Xizang |
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