| 华北寒武系二级海侵背景下的沉积趋势及层序地层序列：以北京西郊下苇甸剖面为例 |
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| 引用本文： | 梅冥相.华北寒武系二级海侵背景下的沉积趋势及层序地层序列：以北京西郊下苇甸剖面为例[J].中国地质,2011,38(2):317-337. |
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| 作者姓名： | 梅冥相 |
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| 作者单位： | 中国地质大学地球科学与资源学院,北京,100083 |
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| 基金项目： | 国家自然科学基金项目，中国石油化工股份有限公司海相前瞻性项目 |
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| 摘 要： | 为了达到在地层框架内划分和对比沉积岩的目的,以不整合面为主要地层面,将不整合面及其可以对比的整合面所限定的地层单位定义为沉积层序,并研究沉积层序内的沉积趋势变化,成为今天层序地层学的核心内容.在寒武纪,华北地台接受沉积的时间较晚,所以发育一个不完整的寒武纪地层序列.在该地层序列之中,从混积潮坪沉积到缓坡型碳酸盐台地沉积.组成一个二级海侵背景下的退积序列.在新的寒武系年代地层框架下,以北京西郊寒武系下苇甸剖面为例,重新审视华北地台寒武系层序地层特征,将为研究这一个关键地质历史时期贫乏骨骼的风暴海、随着后生动物辐射而微生物碳酸盐岩也在增加的特殊的沉积作用样式提供重要线索.
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| 关 键 词： | 层序地层学 寒武系 下苇甸剖面 北京西郊 |
Depositional trends and sequence-stratigraphic successions under the Cambrian second-order transgressive setting in the North China Platform: a case study of the Xiaweidian section in the western suburb of Beijing |
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| MEI Ming-xiang.Depositional trends and sequence-stratigraphic successions under the Cambrian second-order transgressive setting in the North China Platform: a case study of the Xiaweidian section in the western suburb of Beijing[J].Chinese Geology,2011,38(2):317-337. |
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| Authors: | MEI Ming-xiang |
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| Institution: | MEI Ming-xiang(School of Earth Sciences and Natural Resources,China University of Geosciences,Beijing 100083,China) |
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| Abstract: | In order to conduct the division and correlation of sedimentary rocks within stratigraphic frameworks,the author holds that the core for sequence-stratigraphic studies should be described as follows: the unconformity is used as the main stratigraphic surface,the stratigraphic unit bounded by the unconformity and its relative conformity is defined as the depositional sequence,and the depositional trend within the depositional sequence is regarded as the elementary content.During the Cambrian period,the North... |
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| Keywords: | sequence stratigrapy Cambrian Xiaweidian section western suburb of Beijing |
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