| 川东南-湘西地区志留系小河坝组砂岩中重矿物特征及地质意义 |
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| 引用本文： | 王国茹,陈洪德,朱志军,林良彪,范昱.川东南-湘西地区志留系小河坝组砂岩中重矿物特征及地质意义[J].成都理工大学学报(自然科学版),2011,38(1):7-14. |
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| 作者姓名： | 王国茹 陈洪德 朱志军 林良彪 范昱 |
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| 作者单位： | 王国茹,陈洪德,WANG Guo-ru,CHEN Hong-de(油气藏地质及开发工程国家重点实验室(成都理工大学),成都,610059;成都理工大学沉积地质研究院,成都,610059);朱志军,ZHU Zhi-jun(成都理工大学沉积地质研究院,成都,610059;东华理工大学地球科学与测绘工程学院,江西,抚州,344000);林良彪,范昱,LIN Liang-biao,FAN Yu(成都理工大学沉积地质研究院,成都,610059) |
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| 基金项目： | 国家自然科学基金重点资助项目，国家"十五"重大科技攻关项目，中国石化"十五"重大科技项目 |
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| 摘 要： | 沉积物中重矿物的分布受物源区、构造抬升与剥蚀作用、古地貌以及古气候、古环境等多种因素影响,因此可将重矿物的研究应用于物源、沉积环境的分析。通过对川东南-湘西地区下志留统小河坝组砂岩重矿物的相关分析,提出川东南与湘西地区小河坝组砂岩的物源方向不同,川东南小河坝组砂岩的物源方向为由南东到北西,即来源于雪峰山隆起的南西段;湘西小河坝组砂岩的物源方向为由东北到西南,即来自雪峰山隆起的北东段。重矿物组合表明川东南地区的物源主要由古老的沉积岩再旋回沉积物、基性-超基性侵入岩体和中基性喷出岩构成;湘西地区的物源主要为更老的沉积岩及其所夹少量中基性喷出岩,总体形成于稳定物源的构造沉积环境。砂岩中的指相重矿物黄铁矿和赤(褐)铁矿特征及其分布反映了小河坝组砂岩沉积期靠近黔中隆起和雪峰山隆起为水体较浅的氧化环境,而在川东南存在南川和秀山-沿河2个深坳区,为深水还原环境。
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| 关 键 词： | 重矿物 物源 小河坝组 志留系 川东南-湘西 |
Characteristics and geological implications of heavy minerals in Lower Silurian Xiaoheba Formation sandstones in Southeast Sichuan-West Hunan |
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| WANG Guo-ru,CHEN Hong-de,ZHU Zhi-jun,LIN Liang-biao,FAN Yu .State Key Laboratory of Oil , Gas Reservoir Geology , Exploitation,Chengdu University of Technology,Chengdu ,China.Characteristics and geological implications of heavy minerals in Lower Silurian Xiaoheba Formation sandstones in Southeast Sichuan-West Hunan[J].Journal of Chengdu University of Technology: Sci & Technol Ed,2011,38(1):7-14. |
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| Authors: | WANG Guo-ru CHEN Hong-de ZHU Zhi-jun LIN Liang-biao FAN Yu State Key Laboratory of Oil Gas Reservoir Geology Exploitation Chengdu University of Technology Chengdu China |
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| Institution: | WANG Guo-ru1,2,CHEN Hong-de1,ZHU Zhi-jun2,3,LIN Liang-biao1,FAN Yu3 1.State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation,Chengdu University of Technology,Chengdu 610059,China,2.Institute of Sedimentary Geology,3.College of Geosciences and Measurement Engineering,East China Institue of Technology,Fuzhou 344000 |
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| Abstract: | The distribution of heavy minerals in deposits is subjected to the provenance,tectonic uplifting,palaeogeomorphology,paleoclimate and paleoenvironment,etc..So pepole can make the most of the research of heavy minerals in order to analyze the provenance and sedimentary environment.By the relative analysis of heavy minerals,this article illustrates that the provenance direction of the sandstones of the Lower Silurian Xiaoheba Formation in Southeast Sichuan is from southeast to northwest,that is to say,the pro... |
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| Keywords: | heavy mineral Xiaoheba Formation Silurian Southeast Sichuan-West Hunan |
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