Significant Progress on Pan-African and Early Paleozoic Orogenic Events in Qinghai-Tibet Plateau——Discovery of Pan-African Orogenic Unconformity and Cambrian System in the Gangdise Area, Tibet, China
详细信息
- 责任者：Li Cai (College of Earth Sciences ; Jilin University ; Changchun 130061 ; China) ; Wu Yanwang
- 刊名：Geological Bulletin of China
- 出版年：2010
- 卷期：29(12)
- 关键词：泛非造山运动 ; Pan-African Orogeny ; 寒武纪 ; Cambrian ; 角度不整合 ; angular unconformities ; 青藏高原 ; Qinghai-Tibetan Plateau
- 页码：p.1733-1736
- 图表：2 illus., 16 refs.
- 分类号：0300
- issnNo：ISSN1671-2552
- isbnNo：CN11-4648/P
摘要
A Pan-African orogenic unconformity between Cambrian and Ordovician and relatively complete Cambrian deposits were discovered in Xainza area, which is the only confessed Cambrian system in southern Qinghai-Tibetan Plateau so far. This new discovery is not only an enrichment and complementarity of the stratigraphic system of Qinghai-Tibetan Plateau, but also the only Pan-African orogenic unconformity between Cambrian and Ordovician in Qinghai-Tibetan Plateau and its surrounding areas. The research on it can accurately determine the time limit of Pan-African movement and its geodynamic evolvement. This unconformity provides an unique sample to the study of the sedimentary process in northern Gondwana before Pan-African movement and has great and far-reaching significances to the research of the tectonic evolvement of Qinghai-Tibetan Plateau.
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