| 贺兰山寒武纪早期苏峪口组水下冲积扇的发现及意义 |
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| 引用本文： | 蔡雄飞,何文键,杨捷,曾佐勋,顾延生,刘伟.贺兰山寒武纪早期苏峪口组水下冲积扇的发现及意义[J].岩石矿物学杂志,2013,32(2):197-206. |
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| 作者姓名： | 蔡雄飞 何文键 杨捷 曾佐勋 顾延生 刘伟 |
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| 作者单位： | 1. 中国地质大学地球科学学院,生物地质与环境地质教育部重点实验室,湖北武汉430074
2. 核工业地质局二九二大队,广东河源,517000 |
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| 基金项目： | 中国地质调查局地调项目 |
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| 摘 要： | 寒武纪早期的苏峪口组是贺兰山地区地质历史重要转换时期的地质单位,长期被认为是近岸海滩沉积.通过3年来对苏峪口组的研究,新识别了苏峪口组沉积环境为一个水下冲积扇,在岩性、岩相、生物群等方面都有新的发现和新的认识.水下冲积扇以冲刷面为底,砾石成分比较复杂,具砾砂混杂、不等粒结构,内部发育递变层理,具重力流的沉积特征.全区辉绿岩脉锆石年龄集中在5.3～5.4 Ma,是开裂盆地早期出现的标志年龄,说明开裂盆地的出现是造成苏峪口组早中期水下冲积扇发育的主要原因.
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| 关 键 词： | 水下冲积扇 沉积环境 构造背景 苏峪口组 贺兰山 |
| 收稿时间： | 2012/5/18 0:00:00 |
| 修稿时间： | 2012/12/21 0:00:00 |
The discovery of alluvial fan in the Early Cambrian Suyukou Formation of the Helan Mountain and its geological implications |
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| CAI Xiong-fei,HE Wen-jian,YANG Jie,ZENG Zuo-xun,GU Yan-sheng and LIU Wei.The discovery of alluvial fan in the Early Cambrian Suyukou Formation of the Helan Mountain and its geological implications[J].Acta Petrologica Et Mineralogica,2013,32(2):197-206. |
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| Authors: | CAI Xiong-fei HE Wen-jian YANG Jie ZENG Zuo-xun GU Yan-sheng and LIU Wei |
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| Institution: | State Key Laboratory of Biological and Environmental Geology, Faculty of Earth Science, China University of Geosciences, Wuhan 430074, China;Geological Bureau of Guangdong Nuclear Industry,Heyuan 517000, China;State Key Laboratory of Biological and Environmental Geology, Faculty of Earth Science, China University of Geosciences, Wuhan 430074, China;State Key Laboratory of Biological and Environmental Geology, Faculty of Earth Science, China University of Geosciences, Wuhan 430074, China;State Key Laboratory of Biological and Environmental Geology, Faculty of Earth Science, China University of Geosciences, Wuhan 430074, China;State Key Laboratory of Biological and Environmental Geology, Faculty of Earth Science, China University of Geosciences, Wuhan 430074, China |
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| Abstract: | |
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| Keywords: | alluvial fan sedimentary environment tectonic setting Suyukou Formation Helan Mountain |
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