摘要
巴楚断隆位于塔里木盆地中央隆起带西段,经历了古生代拉张断陷、中、新生代挤压隆升的正反转构造演化历史。早古生代,巴楚地区位于克拉通内坳陷的南翼;晚古生代,西段为一NW向的低隆,东段仍是阿瓦提凹陷的一部分;中生代形成断隆雏形;新生代形成现今西高东低、北高南低的前缘断块隆起,其主要构造反转期为第三纪。巴楚断隆的发育极大地受到南北两凹陷沉降的影响,其成因主要是由于板块碰撞和走滑断裂活动所形成的剪切挤压所致。
The Bachu fault-uplift, located in the western section of the Central uplift in the Tarim Basin, underwent a positive inversion evolution of Paleozoic extension-fault depressing and Meso-Cenozoic compression-uplifting. During the Early Paleozoic, the Bachu area was a part of the southern flank of the cratonic depression. During the Late Paleozoic, the western section of the uplift was a NW-trending low uplift and the eastern section still was a part of the Awat depression. The initial fault-uplift geometry formed in the Mesozoic. The current structural geometry of sloping eastward and southward was generated in the Cenozoic, and the Tertiary was the main structural inversion stage. The Bachu fault-uplift was finalized by the neotectonic movement. Its evolution was greatly affected by subsidence of the northern and southern depressions; it, however , mainly resulted from shear compression due to plate collision and strike-slip faulting.
出处
《地质论评》
CAS
CSCD
北大核心
1998年第1期1-6,共6页
Geological Review
关键词
塔里木盆地
巴楚断隆
正反转构造
剪切挤压
Tarim basin
positive inversion structure
Bachu fault-uplift
shear compression
