古地理学报Issue(5)：653-668,16.DOI:10.7605/gdlxb.2015.05.054
利用风暴沉积类型恢复海平面变化：以北京西山下苇甸剖面寒武纪中晚期风暴沉积为例
Reconstructing sea-level changes from types of storm deposits:An example of the Middle and Late Cambrian at Xiaweidian section of Western Hills,Beijing
摘要
Abstract
Storm deposits were extensively developed in the Middle and Upper Cambrian in North China.However,the sedimentary environments of these storm deposits are a matter of debate.Based on careful observation and measurement of the Xiaweidian section in Western Hills of Beijing,North China, five lithofacies are identified,which are further grouped into three lithofacies associations that were deposi_ted in shallow subtidal zone,deep subtidal zone,and shaly basin,respectively.According to the sedi_mentary textures and structures,49 layers of storm deposits are recognized in the studied section,which are grouped into 4 types (named as:In_situ unbroken,in_situ broken,proximal,and distal storm de_posits) and 1 2 sub_types that were formed in various sedimentary environments.A new sea_level curve is inferred from the changes of storm deposit sub_types in the Middle and Upper Cambrian at western Beijing. This sea_level curve matches well with the curve reconstructed from facies analysis of fair_weather deposits in the studied section,as well as those inferred by previous researches in Beijing and in western Shandong Province,North China.Thus,types of storm deposits can be utilized to reconstruct long_term sea_level changes in the geological history.关键词
风暴沉积/海平面变化/寒武系/第三统/芙蓉统Key words
storm deposits/sea_level change/Cambrian/Third Stage/Furongian分类
天文与地球科学引用本文复制引用
景宇轩,刘建波,闫振,孙永超,许振清..利用风暴沉积类型恢复海平面变化：以北京西山下苇甸剖面寒武纪中晚期风暴沉积为例[J].古地理学报,2015,(5):653-668,16.基金项目
国家自然科学基金项目（编号41272035，41221001，41290260）和现代古生物学和地层学国家重点实验室联合资助 （）
