Salt-related structural styles of Kuqa foreland fold belt,northern Tarim basin  

作　　者：TANG Liangjie1,2, JIA Chengzao3, PI Xuejun4, CHEN Suping1,2, WANG Zhiyu5, XIE Huiwen4 1. Key Laboratory for Hydrocarbon Accumulation of Education Ministry, Beijing 102249, China 2. Basin & Reservoir Research Center, University of Petroleum, Beijing 102249, China 3. PetroChina Company Limited, Beijing 100011, China 4. Tarim Oilfield Company, PetroChina Company Ltd., Kurle 841000, China 5. Department of Geology, University of Petroleum, Beijing 102249, China 

出　　处：《Science China Earth Sciences》2004年第10期886-895,共10页中国科学（地球科学英文版）

基　　金：jointly supported by the National Major Fundamental Research and Development Project(Grant No.G19990433);the National Natural Science Foundation of China(Grant No.40172076);the National Key Project of the Ninth Five-Year Plan(No.99-111).

摘　　要：The salt beds of Lower Tertiary developed in the mid-segment of Kuqa foreland fold belt, northern Tarim basin. They considerably controlled structural deformation of the belt. Ac- cording to the field observation, seismic profile interpretation and drilling data, three different structural styles of supra-salt, intra-salt and sub-salt occurred in the Kuqa foreland fold belt. Su- pra-salt structural styles mainly include thrust faults and fault-related sags. Intra-slat structural styles essentially are salt-pillows, intra-salt faults and folds, and salt weld structures. Sub-salt structural styles mainly consist of imbricated thrust faults, duplex structures, pop-up and fault-related folds. It is indicated that great differences exist among supra-salt, intra-salt and sub-salt structures of Kuqa foreland fold belt. The salt-related structures were formed in the same structural stress field. The dynamic mechanism of the salt-related structures is mainly associated with gravitation, compression and plastic flow of salt beds.The salt beds of Lower Tertiary developed in the mid-segment of Kuqa foreland fold belt, northern Tarim basin. They considerably controlled structural deformation of the belt. According to the field observation, seismic profile interpretation and drilling data, three different structural styles of supra-salt, intra-salt and sub-salt occurred in the Kuqa foreland fold belt. Supra-salt structural styles mainly include thrust faults and fault-related sags. Intra-slat structural styles essentially are salt-pillows, intra-salt faults and folds, and salt weld structures. Sub-salt structural styles mainly consist of imbricated thrust faults, duplex structures, pop-up and fault-related folds. It is indicated that great differences exist among supra-salt, intra-salt and sub-salt structures of Kuqa foreland fold belt. The salt-related structures were formed in the same structural stress field. The dynamic mechanism of the salt-related structures is mainly associated with gravitation, compression and plastic flow of salt beds.

关 键 词：salt-related structural style  supra-salt structure  intra-salt structure  sub-salt structure  KUGA FORELAND FOLD belt. 

分 类 号：P619.211[天文地球—矿床学]