| 安徽大别造山带南部浅变质岩层分布、层序与时代研究 |
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| 引用本文： | 钱存超,汤加富,常丹燕. 安徽大别造山带南部浅变质岩层分布、层序与时代研究[J]. 地层学杂志, 2001, 25(3): 222-227 |
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| 作者姓名： | 钱存超 汤加富 常丹燕 |
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| 作者单位： | 安徽地质调查院 |
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| 基金项目： | 质行业基金 (HY97982 9)资助成果 |
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| 摘 要： | 分布在大别造山带南部的浅变质岩层 ,主要岩石类型为粉砂质千枚岩、变层纹状硅质板岩、变火山角砾岩及浅粒岩 ,原岩是火山—碎屑沉积岩系。岩层经变形改造被减薄拉断 ,呈断续分布的透镜体 ,总体上呈有序产出 ,由老至新为浅粒岩、硅质板岩 ,变火山角砾岩、千枚岩。据其中所获锆石 U- Pb测年 (76 0— 110 0 Ma)资料及微古植物组合 ,其时代属新元古代
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| 关 键 词： | 大别造山带 浅变质岩层 超高压变质带 新元古代 震旦纪 安徽 |
| 文章编号： | 0259-4959(2001)03-0222-06 |
| 修稿时间： | 2000-12-11 |
ON THE DISTRIBUTION ,SEQUENCE AND AGE OF EPIMETAMORPHIC ROCK SERIES IN THE SOUTH OF THE DABIE OROGENIC BELT, ANHUI |
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| QIAN Cun chao,TANG Jia fu,and CHANG Dan yan. ON THE DISTRIBUTION ,SEQUENCE AND AGE OF EPIMETAMORPHIC ROCK SERIES IN THE SOUTH OF THE DABIE OROGENIC BELT, ANHUI[J]. Journal of Stratigraphy, 2001, 25(3): 222-227 |
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| Authors: | QIAN Cun chao TANG Jia fu and CHANG Dan yan |
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| Abstract: | Epimetamorphic rock series distributed in the south of the Dabie Orogenic Belt are a sequence of volcanic clastic rock series, mainly composed of silty phyllite, laminated siliceous slate, meta volcanic breccia and leptite. Owing to the thinning and breaking caused by deformation, the rocks have discontinuously distributed lenses. In general, they show certain sequence from leptite, meta volcanic breccia to phyllite from old to young. According to U Pb isotopic age of zircon and its micropaleobotanic fossils, their age is Neoproterozoic. |
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| Keywords: | epimetamorphic rock series Neoproterozoic Dabie orogenic belt Anhui |
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