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| 藏南康马地区石炭系—二叠系研究新进展 | |
| 引用本文： | 陈俊兵,徐兴永,李文庆,贡布.藏南康马地区石炭系—二叠系研究新进展[J].现代地质,2002,16(3):237-242. |
| 作者姓名： | 陈俊兵 徐兴永 李文庆 贡布 |
| 作者单位： | 1. 中国地质大学地球科学学院,湖北武汉,430074 2. 中国科学院青岛海洋研究所,山东青岛,266071 3. 中国地质大学地球科学与资源学院,北京,100083 4. 西藏自治区第二地质大队,西藏拉萨,850000 |
| 基金项目： | 中国地质调查局“西藏 1∶2 5万江孜幅、亚东幅区调项目”(2 0 0 0 13 0 0 0 0 9111)，国家自然科学基金项目 (4 9972 0 3 8) |
| 摘 要： | 根据西藏江孜幅和亚东幅 1:2 5万区域地质调查工作的成果 ,阐述了西藏康马地区石炭系—二叠系新的划分方案 ;并根据新采集的腕足类、单体珊瑚和菊石等化石组合 ,讨论了各组的地层时代 ,认为本区二叠纪沉积作用可延续到晚二叠世早期 (吴家坪期 ) ,在原二叠系白定浦组之上建立了一个新组———江浦组 (P3 j)。结合邻区的地层对比 ,分辨出 2个伸展不整合 ;2个Ⅰ类不整合和 3个Ⅱ类不整合。最后初步分析了康马地区杂砾岩的成因 ,认为其与冰期—间冰期冻融环境下的滨岸附近古水道重力流有关。 |
| 关 键 词： | 石炭系—二叠系 动物群 不整合 杂砾岩 康马地区 藏南 |
| 文章编号： | 1000-8527(2002)03-0237-06 |
| 修稿时间： | 2002年4月26日 |
NEW ADVANCES IN RESEARCH OF PERMIAN-CARBONIFEROUS IN THE KANGMAR REGION,SOUTHERN TIBET |
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| CHEN Jun bing ,XU Xing yong ,LI Wen qing ,Gongbu.NEW ADVANCES IN RESEARCH OF PERMIAN-CARBONIFEROUS IN THE KANGMAR REGION,SOUTHERN TIBET[J].Geoscience——Journal of Graduate School,China University of Geosciences,2002,16(3):237-242. | |
| Authors: | CHEN Jun bing XU Xing yong LI Wen qing Gongbu |
| Institution: | CHEN Jun bing 1,XU Xing yong 2,LI Wen qing 3,Gongbu 4 |
| Abstract: | On the basis of regional survey, this paper described a new division of the Permian-Carboniferous in the Kangmar region, southern Tibet. According to newly collected fossils, the age of every formation was discussed and it was believed that the deposition in Permian lasted to early stage of late Permian (Wuchiapinian). A new formation-Jingpu Formation(P 3 j )was built on the basis of the original Permian. Based on the strata contrast to the adjacent regions, there were one extension unconformity, two unconformities(I)and three unconformities(II)which were discerned in this paper. Finally,the cause of the diamictites of the Kangmar region was simply analyzed. |
| Keywords: | Permian-Carboniferous fauna unconformity diamictite the Kangmar region southern Tibet |
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