现代地质2011，Vol.25Issue(5)：965-974,10.
胶北地块前寒武纪基底研究新进展
Main Progresses in the Study of Precambrian Basement of Jiaobei Terrane, Eastern China
摘要
Abstract
The Jiaodong terrane located between Yishu fault and Wulian-Yantai fault in eastern Shandong Province, is characterized by an Archean to Paleoproterozoic crystalline basement experienced different degrees of metamorphism traditionally. Its assemblage includes TTG (tonalitic-trondhjemitic-granodioritic) gneisses and a little supracrustal rocks (metavolcanite and metasedimentary) , which combined to granite-greenstone belts of Jiaodong terrane. The research of lithological, geochemical, geochronological data indicated that its continental crust was chiefly generated in Neoarchean (2. 8 -2. 7 Ga) , and then it started intracratonic deposit of Paleoproterozoic khondalite after tectonic event at 2. 5 Ga, finally it undergone the metamorphic event at 1. 8 Ga. Different from Sulu orogen, some characteristics of Precambrian basement of Jiaobei terrane are related to North China Craton, and the boundary between them maybe locate along the Wulian-Yantai fault.关键词
TTG/变质(超)基性岩/前寒武纪基底/胶北地块Key words
TTG/ ultra basic-basic metamorphic rock/ Precambrian basement/ Jiaobei terrane分类
天文与地球科学引用本文复制引用
徐扬,冯岩,李日辉..胶北地块前寒武纪基底研究新进展[J].现代地质,2011,25(5):965-974,10.基金项目
国土资源部海洋区域地质调查项目(GZH200800501). （GZH200800501）
