地质学报（英文版）2001，Vol.75Issue(2)：144-150,7.
Thrusting and Exhumation Processes of a Bounding Mountain Belt:Constraints from Sediment Provenance Analysis of the Hefei Basin
Thrusting and Exhumation Processes of a Bounding Mountain Belt:Constraints from Sediment Provenance Analysis of the Hefei Basin
刘少峰 1刘文灿 1戴少武 2黄思骥 3陆五云4
作者信息
- 1. Faculty of Geosciences and Resources, China University of Geosciences,
- 2. Institute of Exploration and Development, Jianghan Petroleum Administration,
- 3. China University of Geosciences,
- 4. Anhui Bureau of Geology and Mineral Resources,
- 折叠
摘要
Abstract
Lithic (or gravel) composition analyses of the Jurassic Sanjianpu Formation and Fenghuangtai Formation in the Hefei basin show that the sediment provenance consists mainly of four kinds of rock units: the basement metamorphic complex, granitic rocks, medium- and low-grade metamorphic rocks, and sandy and muddy sedimentary rocks, which are distributed along the bounding thrust belt. The whole stratigraphic section can be divided into 2 lithic sequences and 7 subsequences. The regular distribution and changes of lithic fragments and gravels in lithic (or gravel) sequences reflect that the bounding thrust belt of basin has undergone 2 thrusting cycles and 7 thrusting events. Lithic (or gravel) composition analyses of the basin fully reveal that the northern Dabie basement metamorphic complex was exhumed on the earth surface in the Middle and Late Jurassic, and extensive intermediate and acid intrusive rocks were developed in the southern North Huaiyang or northern Dabie Mountains during the basin syndepositional stage.分类
天文与地球科学引用本文复制引用
刘少峰,刘文灿,戴少武,黄思骥,陆五云..Thrusting and Exhumation Processes of a Bounding Mountain Belt:Constraints from Sediment Provenance Analysis of the Hefei Basin[J].地质学报（英文版）,2001,75(2):144-150,7.
