塔里木盆地车尔臣断裂系地质结构与构造演化  

Geologic framework and structural evolution of Cheerchen fracture system in Tarim Basin

作　　者：丁长辉[1] 单玄龙[1] 李强[2] 蓝平[2] 曾祥洲[2] 王清斌[1] 

机构地区：[1]吉林大学地球科学学院,长春130026 [2]中国石油天然气集团公司东方地球物理公司研究院库尔勒分院,新疆库尔勒841001

出　　处：《世界地质》2008年第1期36-41,58,共7页World Geology

基　　金：中油集团塔里木油田公司"塔里木盆地2005年新区新领域勘探目标优选与评价"项目

摘　　要：车尔臣断裂系地质结构东西分3段,塘古地区以西发育南倾叠瓦状逆冲席;古城地区为典型和复杂的前陆盆地构造样式;塔东地区以东发育简单的背斜。形成不同构造样式的主要原因是相同的挤压应力遇到不同的地块导致应力释放时影响的范围不同所致。构造演化表明车尔臣断裂系主要受阿尔金山两期活动影响:一期于晚加里东—早海西期活动,挤压应力源来自北部,盆山边界位于于田北—塘古1井北—古城2井北—塔东2井南一线;二期于印支晚期—燕山早期活动,挤压应力源自东向西逐渐南移,盆山边界位于现今阿尔金山前。两期构造运动叠加造成了车尔臣断裂系现今的构造样式。Cheerchen fracture system can be divided into three parts ： imbricate overthrust sheets in western Tanggu area, the typical and complex construction modalities of foreland basin in Gucheng, and simple anticlines in eastern Tadong. The areas were affected by releasing stress when different geological bodies accepted the same compressive stress, thus the different parts of Cheerchen fracture system had various structural patterns. The Cheerchen fracture system are mainly affected by the two period activities of the Altyn Mountain, one is in late Caledonian - early Hercynian, when the compressive stress source came from the south, and the border of basin and mountain is located on a line of northern Yutian - northern Tanggulwell - northern Gucheng 2 - southern Tadong 2 well ; The other is in late Indosinian - early Yanshanian, during this time the compressive stress source moved to south little by little from east to west, and the border of basin and mountain is in front of the Altyn Mountain. The two period geologic movements lead to the modern Cheerchen fracture system structural patterns.

关 键 词：断裂系 地质结构 构造演化 车尔臣 塔里木盆地 

分 类 号：P542[天文地球—构造地质学]