Genetic Mechanism of Granitic Leucosome within High-Pressure Granulite from the Early Precambrian Metamorphic Basement of Shandong Peninsula, SE North China Craton
详细信息
- 责任者：Liu Fulai (Institute of Geology ; Chinese Academy of Geological Sciences ; Beijing 100037 ; China) ; Liu Pinghua
- 刊名：Acta Petrologica Sinica
- 出版年：2012
- 卷期：28(9)
- 关键词：花岗质片麻岩 ; granitic gneiss ; 麻粒岩 ; granulite ; 山东 ; Shandong Province
- 页码：p.2686-2696
- 图表：5 illus., 3 tables, 43 refs.
- 分类号：0802
- issnNo：ISSN1000-0569
- isbnNo：CN11-1922/P
摘要
Thin layers and lenses of granitic leucosome are widely distributed within high-pressure (HP) mafic granulite from the Early Precambrian metamorphic basement of Shandong Peninsulu, SE North China Craton. A combined study of mineral inclusions, cathoduluminescence (CL) images, U-Pb LA-ICP-MS dates, and in-situ trace element compositions of zircon provide clear evidence on the nature and timing of partial melting within the Early Precambrian metamorphic basement of Shandong Peninsula. The data together with previous studies imply that the Early Precambrian metamorphic basement within Shangdong Peninsulu experienced a Paleoproterozoic partial melting event, which was probably associated with a post-peak middle-low pressure granulite-facies stage of hot exhumation rather than a peak HP granulite-facies stage. This partial melting event induced extensive retrograde metamorphism of the HP granulites and their country rocks distributed within the Shandong Peninsula.
© 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 |