Lvliang Cyclic Structure Features of Gaizhou Region
详细信息
- 责任者：Yang Guoping (Team 5 ; Bureau of Geology and Mineral Resources Exploration of Liaoning Province ; Dashiqiao 115100 ; China)
- 刊名：Jilin Geology
- 出版年：2012
- 卷期：31(1)
- 关键词：辽河群 ; Liaohe Group ; 旋回沉积作用 ; cyclic sedimentation ; 辽宁 ; Liaoning Province
- 页码：p.4-7
- 图表：2 illus., 1 table
- 分类号：1200
- issnNo：ISSN1001-2427
- isbnNo：CN22-1099/P
摘要
The Early Proterozoic Liaohe Group metamorphic rock system is distributed in Gaizhou region, most of where are Gaixian rock formation metamorphic rocks. Tectonic lines of metamorphic rock show NNW-SEE trending in general, direction of tectonic lines consistent with the general strike of rock stratum. Liaohe Group metamorphic age 2.000~1.900 Ma. Through survey, analysis and research, initial confirm that Liaohe Group metamorphic rock system experienced the three episodic reformations by deformation action. The first one was bedding shear deformation under extensional mechanism and the second one was extrusion deformation under contractile mechanism; the third one was continuation of the second one.