Main Progresses in the Study of Precambrian Basement of the North Sulu Ultra-High Pressure Metamorphic Belt, Eastern China
详细信息
- 责任者：Xu Yang (Key Laboratory of Marine Hydrocarbon Resources and Environmental Geology ; Ministry of Land and Resources ; Qingdao 266071 ; China) ; Yang Kunguang
- 刊名：Geoscience
- 出版年：2013
- 卷期：27(2)
- 关键词：前寒武 ; Precambrian ; 基底 ; basement ; 苏鲁造山带 ; Su-Lu Orogenic Belt
- 页码：p.248-259
- 图表：illus., 4 tables, 60 refs.
- 分类号：0300
- issnNo：ISSN1000-8527
- isbnNo：CN11-2035/P
摘要
The north Sulu ultra-high pressure(UHP) metamorphic belt which is located at the eastern Muping-Jimo fault in eastern Shandong Peninsula is mainly characterized by Neoproterozoic bimodal igneous rocks.And its assemblages include a large number of granitic gneiss and a small amount of ultra basic/basic metamorphic rocks and metasedimentary rocks.The previous research of geochemical,zircon U-Pb,Lu-Hf isotope data revealed the geologic succession of the north Sulu UHP terrane.The Neoarchean-Paleoproterozoic ancient crust was remained and its initial crust evolution might start from Neoarchean or even earlier,then it undergone a series of magma-volcano-metamorphic events during 1.8-2.2 Ga.The bimodal magmatism,which caused by the rifting of the Rodinia Supercontinent at mid-Neoproterozoic(0.7-0.8 Ga) reworked the ancient and juvenile crust.As the same to the Sulu-Dabie orogen terrane,some characteristics of the Precambrian basement of the north Sulu UHP terrane are corresponding to Yangtze Block,and its northwestern boundary to the North China Block may be located along the Wulian-Yantai fault.
© 2004-2018 中国地质图书馆版权所有 京ICP备05064691号 京公网安备11010802017129号 地址：北京市海淀区学院路29号 邮编：100083 电话：办公室：(+86 10)66554848；文献借阅、咨询服务、科技查新：66554700 |