京津晋冀寒武系第三统鲕粒灰岩特征及其环境意义

CORC > 北京大学 > 地球与空间科学学院

	京津晋冀寒武系第三统鲕粒灰岩特征及其环境意义; The Third Series of Cambrian Oolitic Limestones and Their Sedimentary Environment in Beijing,Tianjin,Shanxi and Hebei Provinces,North China
	赵鹏沄 ; 刘波 ; 秦善
刊名	北京大学学报自然科学版
	2011
关键词	华北寒武系第三统鲕粒灰岩环境意义 North China the Third Series of Cambrian oolitic limestone sedimentary environment
英文摘要	京津晋冀地区是华北板块的主体,该区寒武系第三统以鲕粒灰岩的广泛发育为特点。通过野外露头剖面和室内薄片观察,对研究区鲕粒灰岩空间展布和鲕粒类型进行了详细研究。鲕粒灰岩从东到西出现的层位逐渐抬高,具有明显的穿时性。大型鲕滩呈向西凸出的弧形带状分布,鲕滩带主体由同心鲕鲕粒灰岩组成,鲕滩带西侧鲕粒灰岩厚度迅速减小,鲕粒以放射鲕居多,鲕滩带东侧鲕粒灰岩厚度逐渐减小,鲕粒以同心鲕占绝对优势。寒武纪第三世海侵方向是由东向西,在研究区中部发育内缓坡的鲕粒滩环境,西部为滩后潮坪环境,东部为开阔海环境。; The study area,geographically including Beijing,Tianjin,Shanxi and Hebei Provinces,is the main part of the North China Plate.Based on the study of outcrop and thin section observation,the distribution pattern of oolitic limestone and its ooid characteristics are presented.Olitic limestones were widely distributed in the area during the Third Series of Cambrian.Generally,the oolitic limestone elevates in strata gradually from east to west,which indicates that the oolitic limestone is diachronous.Huge oolitic shoals distribute along a western ward bulging belt from north to south,and mainly are composed of concentric ooids.In west of the belt,the thickness of the oolitic limestone decreases rapidly,and the oolitic limestone mainly is composed of radial ooids.In east of the belt,the oolitic limestone thins gradually,with majority grains of concentric ooids.The marine transgression during the Third Epoch of Cambrian took place from east to west on the North China Plate.In this background,the inner ramp ooid shoals developed in the central belt of the study area,with open sea in the east and shoal back tidal flat in the west.; 中国石油化工股份有限公司海相前瞻性项目; 中文核心期刊要目总览(PKU); 中国科技核心期刊(ISTIC); 中国科学引文数据库(CSCD); 0; 5; 825-830; 47
语种	中文
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/51157]
专题	地球与空间科学学院
推荐引用方式 GB/T 7714	赵鹏沄,刘波,秦善. 京津晋冀寒武系第三统鲕粒灰岩特征及其环境意义, The Third Series of Cambrian Oolitic Limestones and Their Sedimentary Environment in Beijing,Tianjin,Shanxi and Hebei Provinces,North China[J]. 北京大学学报自然科学版,2011.
APA	赵鹏沄,刘波,&秦善.(2011).京津晋冀寒武系第三统鲕粒灰岩特征及其环境意义.北京大学学报自然科学版.
MLA	赵鹏沄,et al."京津晋冀寒武系第三统鲕粒灰岩特征及其环境意义".北京大学学报自然科学版 (2011).