Paleoproterozoic Potassic Granitoids in the Sushui Complex from the Zhongtiao Mountains, Northern China: Geochronology, Geochemistry and Petrogenesis |
| |
作者姓名: | TIAN Wei LIU Shuwen ZHANG Huafeng |
| |
作者单位: | [1]Key Laboratory of Orogenic Belt and Crustal Evolution of the Ministry of Education, School of Earth and Space Sciences, Peking University, Beijing 100871 [2]State Key Laboratory of Geo-Processes and Mineral Resources, China University of Geosciences, |
| |
摘 要: | 1 Introduction The early Precambrian basement of the North China Craton (NCC) consists mainly of the Eastern Continental Block, the Western Continental Block and the Trans-North China Orogen (TNCO, or “the Central Tectonic Zone”), which formed by continental collision between the Eastern and Western Blocks (Zhao et al., 1998). This evolutionary model has now been widely accepted (Wu and Zhong, 1998; Guan et al., 2002; Guo et al., 2002; Liu et al., 2002a, b; Liu et al., 2004a, b;…
|
关 键 词: | 花岗岩 化学特征 钾 地质年代 二长闪长岩 |
收稿时间: | 2006-04-26 |
修稿时间: | 2006-08-21 |
Paleoproterozoic Potassic Granitoids in the Sushui Complex from the Zhongtiao Mountains,Northern China:Geochronology,Geochemistry and Petrogenesis |
| |
Authors: | TIAN Wei LIU Shuwen and ZHANG Huafeng Key Laboratory of Orogenic Belt and Crustal Evolution of the Ministry of Education School of Earth and Space Sciences Peking University Beijing State Key Laboratory of Geo-Processes and Mineral Resourc |
| |
Abstract: | Paleoproterozoic potassic granitoids in the southern Sushui Complex from the Zhongtiao Mountains yielded SHRIMP zircon U-Pb ages of 1968-1944 Ma. Lithologically, the potassic granitoid series consists chiefly of monzodiorite, quartz monzonite and syenogranite. Their trace elements and Sm-Nd isotope characteristics indicate that they were derived from partial melting of Archean TTG rocks in an overthickened continental crust. Petrogenesis of this potassic granitoid series implies a collisional environment within the Trans-North China Orogen in the Paleoproterozoic, which supports a tectonic model of Eastern and Western Continental Blocks being amalgamated in the Paleoproterozoic. |
| |
Keywords: | Sushui Complex Zhongtiao Block Trans-North China Orogen potassic granitoid zircon U-Pb Sm-Nd isotope Paleoproterozoic |
本文献已被 CNKI 维普 万方数据 等数据库收录! |
| 点击此处可从《Acta Geologica Sinica》浏览原始摘要信息 |
| 点击此处可从《Acta Geologica Sinica》下载免费的PDF全文 |