华北地台东部中寒武世微生物礁的时空分布  

TEMPORAL AND SPATIAL DISTRIBUTION OF MICROBIOLITIC REEFS OF MIDDLE CAMBRIAN, EASTERN NORTH CHINA CRATON

作　　者：穆西南[1] 严惠君[1] 李越[1] 袁金良[1] 张俊明[1] 

机构地区：[1]中国科学院南京地质古生物研究所,南京210008

出　　处：《微体古生物学报》2003年第3期279-285,共7页Acta Micropalaeontologica Sinica

基　　金：中国科学院重点项目 ( 0 0 0 111) ;国家创新工程基金 ;国家基金委特殊学科项目 ( 990 60 5 );中国科学院南京地质古生物研究所特资课题 ( 0 0 0 10 5 )共同资助

摘　　要：以三叶虫化石带的划分对比为时间标尺 ,通过对华北地台东部山东和辽宁复州湾 8个中寒武世剖面广泛发育以 Epiphyton,Renalcis和 Girvanella类群落建造的微生物礁时空分布研究表明 :曾经有 5次主要的造礁期 ,它首现的最低层位是山东长清崮山徐庄阶顶部 Bailiella- L ioparia带 ,而后在张夏期以此为核心向东、东北、东南扩展 ,至张夏阶顶部的 Demesella- Yabeia带规模达最大。According to the time scale of trilobite biozones, temporal and spatial distribution of microbiolitic buildups constructed by Epiphyton, Renalcis and partly Girvanella community is worked out based on 8 sections in eastern North China Craton, Shandong and Liaoning. Five cycles of microbiolitic buildups occurred in this area. The lowest microbiolitic reefs appeared in the Bailiella-Lioparia Biozone, the top of the Xuzhuang Stage, which are limited to the Gushan, Chnagqing area. Reefs spread allaround Changqing during the Changhia Stage. In the Damesella-Yabeia Biozone, the top of the Changhia Stage, the distribution of reefs reached the climax in scale and almost covered whole epicontinental sea of eastern North China Craton.

关 键 词：华北地台 中寒武世 微生物 群落组成 形态学 时空分布 

分 类 号：Q913[天文地球—古生物学与地层学]