Zircon SHRIMP geochronology and geochemistry of TTG rocks in Sushui Complex from Zhongtiao Mountains with its geological implications  

作　　者：TIAN Wei LIU Shuwen LIU Chaohui YU Shengqiang LI Qiugen WANG Yueran 

机构地区：[1]Key Laboratory of Orogenic Belt and Crustal Evolution, MOE, School of Earth and Space Sciences, Peking University, Beijing 100871,China

出　　处：《Progress in Natural Science:Materials International》2006年第5期492-500,共9页自然科学进展·国际材料（英文版）

基　　金：Supported by the National Natural Science Foundation of China (Grant No. 40420120135)

摘　　要：The tonalite-trondhjemite granodiorite （TTG） rocks in Sushui Complex of Zhongtiao Block can be divided into two series according to their zircon U Pb ages and gee）chemical characteristics： one is subduction-related （SR） and the other collision-related （CR）. The SR TTG rocks, together with other Late Amhean island arc magmatism, were developed as a result of oceanic subduetion between the Eastern and Western blocks in Late Archean; while the CR TTG rocks formed in a thickened crustal environment, which was responding to the collision between the Eastern and Western blocks in Paleoproterozoic. All these features support a model that the Zhongtiao Block is a part of the Trans-North China Orogen in the middle of North China Craton.在宗陶·布莱克复杂的 Sushui 的 tonalite-trondhjermite-granodiorite (TTG ) 岩石能根据他们的锆石 U-Pb 年龄被划分成二个系列， geochemical 特征一是 subduction 相关的(SR ) 并且其它碰撞相关(CR ) 。和另外的晚太古代的岛弧 magmatism， SR TTG 岩石由于在东方、西方的黑人之间的海洋的 subduction 被开发在晚太古代；当 CR TTG 岩石在变厚的外壳的环境形成了时。它在 Paleoproterozoic 对在东方、西方的块之间的碰撞正在作出回应。所有这些特征支持宗陶·布洛克是在诺思中国 Craton 的中间的 Trans 北方中国 Orogen 的部分的一个模型。

关 键 词：Sushui Complex Zhongtiao Block Trans-North China Orogen zircon U-Pb geochronology trace element simulation. 

分 类 号：P58[天文地球—岩石学]