【摘要】 大体沿中国西部国界,由帕米尔高原向北东方向直至阿尔泰,有一条延伸约1 500 km,宽达200 km以上的滑移构造带,使得新疆与西部邻区在地质对比中产生许多困难.在这条带上尚未形成地表贯通的大型走滑断裂,而是表现为不同时期形成的古断裂等构造薄弱带以新的动力方式复活和重新组合.这一由下地壳驱动的滑移带控制了这一地区的盆山布局,形成中亚地区大规模的现代山脉牵弓l现象,早更新世以来左行滑移超过600 km,向北逐渐减小.地震解析和GPS测量资料表明,这条滑移带现今仍然十分活跃.该滑移构造带向西南延伸,可与印度板块以西的恰曼转换断裂系统相接,进入波斯湾,直达印度洋中脊.从广义上讲,帕米尔一阿尔泰滑移构造带应属恰曼转换断裂系统向亚欧大陆内部的延续.对这条位于多国边界的活动性滑移构造带的研究,不仅有利于新疆与中亚地区地质构造及矿带对比,而且对环境与灾害地质研究也有重要意义.更多还原

【Abstract】 There is a gliding-tectonic-zone about 1 500 km long and 200 km wide roughly along the western border of China, from Pamir to the Altay mountains. Great difficulties exist in geological correlation between Xinjiang and its western neighbors. No huge strike-slip fault zone has been exposed in the area. But structural weak zone is demonstrated as reactivation of faults of different ages. The gliding-tectonic-zone driven from the lower crust has controlled the layout of basins and mountains in the area, resulting in formation of large-scale modern mountain drag structures in the central Asia. The left-hand displacement surpasses 600 km, and decreases gradually northward since the early Pleistocene. Seismic data and GPS measurement indicate that the zone is still very active. The gliding-tectonic-zone extends southeastward, and connects with the Qia-Man transform fault west of the India plate, to the Persian Gulf and the mid-ridge of the Indian Ocean. Generally speaking, the Pamir-Altay Mountain zone is an extension of the Qia-Man transform fault system into the Eurasia continent. The research of this zone with multiple borders will benefit not only the correlative research between Xinjiang and neighboring countries, but also the research of environment and geohazard in the central Asia.更多还原