Late Paleozoic Ultrahigh-Temperature Metamorphism in South China : A Case Study of Granulite Enclaves in the Shiwandashan Granites
详细信息
- 责任者：Zhao Liang (Key Laboratory of Marginal Sea Geology ; South China Sea Institute Oceanology ; Chinese Academy of Sciences ; Guangzhou 510301 ; China) ; Guo Feng
- 刊名：Acta Petrologica Sinica
- 出版年：2011
- 卷期：27(6)
- 关键词：超高压变质作用 ; ultrahigh pressure metamorphism ; 麻粒岩相 ; granulite facies ; 广西 ; Guangxi
- 页码：p.1707-1720
- 图表：7 illus., 6 tables, 78 refs.
- 分类号：0802
- issnNo：ISSN1000-0569
- isbnNo：CN11-1922/P
摘要
The Darongshan-Shiwandashan Indo-Sinian S-type granites from Southeast Guangxi contain abundant metasedimentary granulite enclaves. The mineral assemblages of spinel+quartz and orthopyroxene+sillimanite±quartz in some granulites indicated ultrahigh-temperature metamorphism in the region. Combined mineral assemblages and metamorphic reaction textures with P-T calculation, the granulite enclaves in the Shiwandashan area experienced a three-stage metamorphic history. This clockwise P-T path in granulites was consistent with the Late Paleozoic to Early Mesozoic crustal evolution, including initial crustal thickening, subsequent rapid exhumation and cooling and remelting.