中文摘要：

中国大陆西北部的＂古特提斯缝合带＂如何与东面的＂秦岭-大别-苏鲁＂造山带连接,是涉及中国大陆中部构造格架的关键问题之一。南秦岭造山带中的古特提斯蛇绿岩带和东秦岭-桐柏-大别-苏鲁造山带中三叠纪高压-超高压变质带的对比,以及一条位于两者之间的220~204 Ma的大型左行走滑剪切带的存在,提供了它们之间关系的新的视角,为此,我们提出南秦岭的勉略蛇绿岩带向东通过宁陕-湘河大型左行走滑剪切带,和大陆俯冲与深俯冲造成的＂耀岭河-桐柏-大别-苏鲁＂高压—超高压变质带北缘连接,构成＂秦岭-大别-苏鲁＂造山带中的古特提斯缝合带新模式。沿着这条边界,南秦岭构造单元可以分为南部的南秦岭被动陆缘单元和北部的南秦岭主动陆缘单元,后者向东的延伸由于南、北板块之间三叠纪的剪切碰撞而尖灭。

英文摘要：

How the ＂Paleo-Tethyan suture zone＂ of NW China is connected with the ＂Qinling-Dabie-Sulu orogen to the east is one of the key issue in the tectonic framework of central China. Similarities between the Paleo-Tethys ophiolite zone in South Qinling and the Triassic HP-UHP metamorphic belt in the East Qinling - Tongbai-Dabie-Sulu orogen, as well the presence of a 214-200 Ma, large-scale, left-lateral shear zone between them, provide new insights into their relationship. Thus, we propose a new model in which the Mianlue ophiolitic belt （Zhang G Wet al., 2001） is connected with the northern edge of the ＂Yaolinghe-Tongbai-Dabie-Sulu belt to the east by the Ningshan-Xianghe left-lateral shear zone. This shear zone divides tb.e South Qinling terrane into the South Qinling passive continental margin unit to the south and the South Qinling active unit to the north, which pinches out to the east due to shearing between the NCB and SCB during the Triassic