柴达木盆地西部地区盆山接触关系研究  

Study on basin-mountain contact pattern in western Qaidam Basin

作　　者：陈袁[1] 牟中海[1] 马达德[2] 李文龙[1] 林伶[1] 李乐[1] 

机构地区：[1]西南石油大学资源与环境学院,四川成都610500 [2]中国石油青海油田公司勘探开发研究院,甘肃敦煌736202

出　　处：《断块油气田》2012年第4期414-417,共4页Fault-Block Oil & Gas Field

基　　金：中国石油天然气股份有限公司重大科技项目"柴达木盆地油气勘探开发关键技术研究"(07-01Z-01-02)

摘　　要：通过对柴达木盆地西部地区地震剖面的对比及露头资料的研究,认为研究区不同区域、不同时代的盆山关系具有很大差异。阿尔金山与盆地的接触关系主要为断层接触和超覆接触,在红沟子以北地区为下断上超式接触,其中月牙山地区呈典型的半花状断层接触,红沟子及其以西地区为超覆接触。昆仑山与盆地的接触关系在中生代主要呈正断层接触,但在阿拉尔、斧头山地区为超覆接触;在新生代主要为高角度逆断层接触,其中昆仑山前中西段与东段之间为右旋走滑断层接触。深刻认识阿尔金山、昆仑山与盆地的接触关系,对于油气资源的勘探和开发具有重要意义。Aecording to the research of seismic profile contrast and outcrop data in western Qaidam Basin. it is believed that the relationship between basin and mountain presents a great difference in different regions and different periods in this study area. The contact relationship between Ahun Mountains and basin is mainly the fault contact and overlap contact. Contact pattern in the northern part of Hong Gouzi Area shows a Iower-tault and upper-overlap type. Typical half-flower fault contact presents in the area of Yueya Mountains, and overlap eontrael relationship appears in Hong Gut,zi and in the western parts of ils. The contact pattern between Kunlun Mountains and basin shows the nonnal fault contact in Mesozoic, but the contact pattern shows the overlap contact in Alar and Futou Mountains region. Basin-mountain pattern is mainly thrust fauh contact in Cenozoic. Right-lateral strike-slip fauh contact is between the middle-western part and eastern part in frunt of Kunlun Mountains. Profound understanding on the eonlael pattern of Altun Mountains- Qaidam Basin and Kunlun Mountains-Qaidam Basin is of great significance in the oil and gas exploration and development.

关 键 词：断层接触 超覆接触 构造反转 盆山接触关系 柴达木盆地 

分 类 号：TE121.2[石油与天然气工程—油气勘探]