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北秦岭造山带发育有多期多类型多成因构造岩浆活动,反映着北秦岭自元古宙以来所经历的复杂多期多类型造山作用与构造演化过程。晋宁期(1000~700Ma)发育有松树沟蛇绿岩、富水基性杂岩体、岛弧型花岗岩类和碰撞型花岗岩类,与新元古代北秦岭活动大陆边缘的俯冲-碰撞造山作用密切相关;晚加里东-早华为西期(460~360Ma)主要发育岛弧型花岗岩和碰撞型花岗岩类,体现了该阶段陆内外向俯冲-碰撞造山作用;晚华力西-印支期(270~195Ma)主要为碰撞型花岗岩类,代表着陆内碰撞造山作用的完成;燕山期为后造山浅成侵位花岗岩类。晋宁期和晚加里东-早华力酉期是北秦岭最为强烈的两期构造岩浆活动时期.
The North Qinling orogenic belt developed multiple stages of multi-genesis tectono-magmatic activity, reflecting the complex multi-stage and multi-type orogeny and tectonic evolution experienced by the Northern Qinling since the Proterozoic. The Jinling period (1000-700 Ma) developed the Songshugou ophiolite, water-rich basic complex rock, island arc type granite and collisional granite, and the subduction-collision orogeny of Neoproterozoic North Qinling continental margin The Late Caledonian-Early Huaian western arc (460 ~ 360Ma) mainly developed island arc granites and collisional granites, which reflected the intra-continental and extriangular subduction-collision orogenic processes in this stage. Late Waxixi-Indosinian 270 ~ 195Ma) are mainly collisional granites, representing the completion of intracontinental collision orogeny; the Yanshanian period is a post-orogenic epithermal granite. The Jinning Period and the late Caledonian-Early Wali Unitary Period are the two most intense periods of tectonic magmatism in the North Qinling.