【摘要】 通过细致的遥感影像解译、变形地貌调查测量以及探槽开挖工作,对塔城盆地的冬别列克断裂进行了初步研究。该断裂晚第四纪以来仍有较强活动,以左旋逆冲运动为主,断裂断错了塔城盆地东缘的各级地貌面,形成清晰的线性构造地貌。该断裂保留有非常清晰的古地震形变带,主要表现为断层陡坎、断层泉及断塞塘,总长度约为100 km,对应最大古地震震级为MS7.49±0.27。目前虽然尚无准确的测年数据限定本次古地震的年代,但从古地震地表破裂的程度分析,其离逝时间不会太久,塔城盆地及周边现今地震活动较弱,可能与该次古地震能量得到一定释放有关。更多还原

【Abstract】 Through detailed interpretation of remote sensing images,deformation survey and trench excavation,they studied Dongbielieke fracture in Tacheng basin. The fault had strong activity thatthrust or left-lateralmade each linear tectonic landform since Late Quaternary. The deformation belt about 100 km caused by paleo earthquake with MS7. 49 ± 0. 27 in this fault presented as scarp,spring and barrier lake. Still without accurate data that can defined age of the paleo earthquake,the age will not too long according to ground rapture. The current weak seismic activity in the Tacheng basin can related to energy release of paleo earthquake.更多还原