| 对华北中元古代海侵初期"河流相"沉积的重新认识:以天津蓟县剖面为例 |
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| 引用本文： | 钟焱,赵亮东,陈留勤,梅冥相.对华北中元古代海侵初期"河流相"沉积的重新认识:以天津蓟县剖面为例[J].古地理学报,2011,13(1):21-29. |
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| 作者姓名： | 钟焱 赵亮东 陈留勤 梅冥相 |
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| 作者单位： | 中国地质大学(北京)地质过程与矿产资源国家重点实验室;中国地质大学(北京)地球科学与资源学院; |
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| 摘 要： | 作为中元古代海侵初期一套厚达400余米的非成熟含砾砂岩地层,常州沟组第一段曾被解释为一套河流相沉积序列.然而,来自于蓟县剖面的实际资料表明需要重新审视前人的解释.在蓟县剖面常州沟组最底部的含细砾粗砂岩中,双向交错层理及冲刷面的频繁发育表明了其具有潮汐作用的沉积特点,这种认识否定了海侵初期大面积发育河流而衍生出的"河侵"...
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| 关 键 词： | 河流沉积 潮坪沉积 常州沟组 蓟县剖面 中元古界 |
New understanding of "fluvial facies" deposition of the early transgression period of Mesoproterozoic: An example from Jixian section in Tianjin |
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| Zhong Yan,Zhao Liangdong,Chen Liuqin,Mei Mingxiang.New understanding of "fluvial facies" deposition of the early transgression period of Mesoproterozoic: An example from Jixian section in Tianjin[J].Journal of Palaeogeography,2011,13(1):21-29. |
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| Authors: | Zhong Yan Zhao Liangdong Chen Liuqin Mei Mingxiang |
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| Institution: | Zhong Yan1,2 Zhao Liangdong1,2 Chen Liuqin1,2 Mei Mingxiang1,2 1 State Key Laboratory of Geological Processes and Mineral Resources,China University of Geosciences(Beijing),Beijing 1000832 School of Earth Sciences and Resources,Beijing 100083 |
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| Abstract: | The immature conglomerate-bearing sandstone strata were more than 400 m thick in the early transgression period of the Mesoproterozoic.The Member 1 of the Changzhougou Formation was once explained as a series of fluvial facies sequence.However,the actual data from the Jixian section indicate that a new understanding to the explanation of preresearchers needs to be made.In the conglomerate-bearing sandstone of the bottom of the Changzhougou Formation at the Jixian section,the occurrence of bimodal cross bedd... |
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| Keywords: | fluvial deposition tidal flat deposition Changzhougou Formation Jixian section Mesoproterozoic |
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