摘要
在总结三峡地区南部川东-八面山弧形构造带及其北部大巴山-大洪山弧形构造带地质构造特征的基础上,论述了以巴中、黄陵、汉南和江南基底地块为边界条件,印支-燕山期发生的南、北部弧形构造带的盖层沿与基底之间的滑动面相向逆冲推覆,在两构造前锋相碰的接合部位,形成与南、北部弧形构造带协调一致的褶皱式奉节-巴东构造带,整体显示弧形对突构造样式,并在黄陵基底地块西侧应力缓冲区形成秭归三角形向斜构造盆地。
On the basis of study on characteristics of the Bamianshan and Dabashan-Dahongshan arcuate structural zone, the authors concluded that the tectonic evolution of the studied area was controlled by the Bazhong, Huangling, Hannan and Jiangnan basement massif and that the sedimentary covers of the two arcuate structural zones thrust into each other along the main and secondary sliding planes between the cover and basement during the Indo - China and Yanshan movement, with the Fenjie-Badong fold structural zone formed, coordinated with and located at the front of the arcuate structrual zones mentioned above, and the Zigui triangular synclinal structrural basin formed in the stress buffer area to the west of the Huangling basement massif.
出处
《华南地质与矿产》
CAS
1998年第1期47-55,共9页
Geology and Mineral Resources of South China
关键词
相向逆冲推覆
弧形对突构造
形成机制
长江三峡地区
构造盆地
opposite thrusting arcuate structural zones forming mechanism the three gorges the Yangtze river