Salt-related structural styles of Kuqa foreland fold belt,northern Tarim basin
Salt-related structural styles of Kuqa foreland fold belt,northern Tarim basin作者机构:Key Laboratory for Hydrocarbon Accumulation of Education Ministry Beijing China Basin & Reservoir Research Center University of Petroleum Beijing China PetroChina Company Limited Beijing China Tarim Oilfield Company PetroChina Company Ltd. Kurle China Department of Geology University of Petroleum Beijing China
出 版 物:《Science China Earth Sciences》 (中国科学(地球科学英文版))
年 卷 期:2004年第47卷第10期
页 面:886-895页
核心收录:
学科分类:081803[工学-地质工程] 08[工学] 0708[理学-地球物理学] 0818[工学-地质资源与地质工程] 0704[理学-天文学]
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)
主 题:salt-related structural style, supra-salt structure, intra-salt structure, sub-salt structure, Kuga foreland fold belt.
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.