On the Tongzi Uplift: Evidence of Northward Expansion of Qianzhong Oldland during Aeronian, Llandovery, Silurian
详细信息
- 责任者：Rong Jiayu (State Key Laboratory of Palaeobiology and Stratigraphy ; Nanjing Institute of Geology and Palaeontology ; CAS ; Nanjing 210008 ; China) ; Wang Yi
- 刊名：Journal of Stratigraphy
- 出版年：2012
- 卷期：36(4)
- 关键词：隆起 ; uplifts ; 黔中隆起 ; Qianzhong Uplift
- 页码：p.679-691
- 图表：1 illus., 51 refs.
- 分类号：0300
- issnNo：ISSN0253-4959
- isbnNo：CN32-1187/P
摘要
Evidence from lithostratigraphy, biostratigraphy, sedimentary structures, palaeokarst and clay minerals derived from 25 Llandovery (Silurian) sections of 16 counties in northern and northeastern Guizhou Province and southern Sichuan Province supports a palaeogeographical reconstruction in which the southern Upper Yangtze Sea regressed during middle-late Aeronian, middle Llandovery. Compared with other major palaeogeographic events, i.e. the Yichang Uplift through the Ordovician and Silurian transition and the Yangtze Uplift during mid-late Telychian, Early Silurian, the Tongzi Uplift was smaller in magnitude, affecting a smaller area and lasting a shorter time interval, but it is significant for regional stratigraphic correlation and palaeogeographical reconstruction. All three events may have been controlled by tectonic movements of South China, which led to major changes in palaeogeographic configuration and imply active tectonic movements in the Silurian.