The Unconformity Type and Distribution in Eastern Qaidam Basin
详细信息
- 责任者：Zhao Weiwei (Faculty of Petroleum Resource ; Xi’an Shiyou University ; Xi’an 710065 ; China) ; Ji Hong
- 刊名：Northwestern Geology
- 出版年：2011
- 卷期：44(4)
- 关键词：不整合圈闭 ; unconformity traps ; 柴达木盆地 ; Qaidam Basin
- 页码：p.97-104
- 图表：5 illus., 1 table, 11 refs.
- 分类号：1003
- issnNo：ISSN1009-6248
- isbnNo：CN61-1149/P
摘要
Qaidam Basin has undergone many tectonic movements and formed several unconformities. According to the hydrocarbon accumulation of unconformities and their origins and seismic reflection characteristics, the unconformities of East Qaidam Basin can be divided into five kinds: fold unconformity, fault-fold unconformity, truncation unconformity, onlap unconformity and parallel unconformity. The different types of unconformity show different hydrocarbon accumulation mechanism and hydrocarbon patterns. The fold unconformity and fault-fold unconformity are of most favorable types for hydrocarbon accumulation.