秦岭造山带(陕西部分)地壳演化

秦岭造山带（陕西部分）奠基于硅铝壳，是由同一个岩石圈板块经多次裂解增生和挤压拼合而成。自新太古代以来，秦岭基本构造格局发生过多次重大变革，其演化可划分为5个重要阶段，即：（1）结晶基底形成阶段（Ar3－Pt1）；（2）结晶基底裂解与古中国板块形成阶段（Pt2－Pt31）；（3）古中国板块裂解与北秦岭造山阶段（Pt32－Pz1）；（4）特提斯及南秦岭造山阶段（Pz2－T2）；（5）超碰撞及大幅度差异活动阶段（T3－Q）。秦岭造山带现今地壳三维结构特征，除保留了古构造格局的残余外，明显受到燕山期以来特提斯和滨太平洋构造域的改造。

CRUSTAL EVOLUTION OF THE QINLING OROGENIC BELT,SHAANXI

On the basement of a sialic crust lithospheric plate, the Qinling orogenic belt (part of Shaanxi) formed through many times of splitting - aggradizing and collision -inatching events. From the New Archeozoic era to the Cenozoic era, the structural framework in Qinling significantly changed many times. The total evolution can be distinguished to five dominant stages:1. The forming period of crystalline basement (Ars-Pt1);2. The forming period of the Paleo -Chinese Platform and the splitting period of the crystalline basement (Pt2-Pt31) ;3. The splitting period of the Paleo-Chinese plateform and the orogenic period of the Northern Qinlign (Pt31-Pz1) ;4. Tethyan period and the orogenic period of the Southern Qinling (Pz2-T2).5. The movement period of super collision and large differential elevation (T3-Q) .In addition to some residual paleo-structural patterns, the Qinling orogenic belt in the present three-dimensional space is evident to be suffered deformation from Tethyan and littorial Pacific structural region; after the Yanshanian Period.