Tectonic Unconformities and Their Forming: Implication for Hydrocarbon Accumulations in Tarim Basin
详细信息
- 责任者：He Bizhu (Key Laboratory of Continental Dynamics ; Ministry of Land and Resources ; Institute of Geology ; Chinese Academy of Geological Sciences ; Beijing 100037 ; China) ; Xu Zhiqin
- 刊名：Acta Petrologica Sinica
- 出版年：2011
- 卷期：27(1)
- 关键词：不整合 ; unconformities ; 油气藏形成 ; reservoir formation ; 塔里木盆地 ; Tarim Basin
- 页码：p.253-265
- 图表：7 illus., 57 refs.
- 分类号：0300
- issnNo：ISSN1000-0569
- isbnNo：CN11-1922/P
摘要
In this paper, the authors analyzes tectonic unconformities formation responded to tecto-orogenic process peripheral mountains of basin. Middle Caledonian, the unconformityⅠ(T07,S/O3) in Tarim Basin denuded mainly from south to north, and extended to the south margin of Awati-Manjiaer depression. Hetian and Tazhong paleo-uplift formed responsible to the northern of West Kunlun and Altyn-Qilian collision orogen belts occurred. Later Caledonian, the unconformity Ⅱ(T06, (D3d+C)/D1-2) formed angular unconformity with southward and northward erosion mainly, and constructed peripheral uplift of Tarim Basin, erosion intensity and denudation extent of Tabei uplift is greater than Katak uplift. Tarim Basin lied in compressive tectonic regime from north and south, and then northeast. Tectonic unconformities formation responded to tectogenesis and the development of peripheral orogenic belt of Tarim basin in different period. Tectogenesis controlled the tectonic unconformities configuration and distribution, and paleo-uplift development.