Carbon Isotope Evolution of Early Proterozoic Dolomites of Wutai Mountain Area,North China  

作　　者：钟华 马永生 霍卫国 姚御元 

机构地区：[1]Institute of Geology,Academia Sinica,Beijing 100029,PRC [2]Research Institute of Petroleum Exploration & Development,Beijing 100083,PRC.

出　　处：《Science China Chemistry》1994年第12期1525-1528,共4页中国科学（化学英文版）

基　　金：the National Natural Science Foundation of China;Zhongguancun Associated Center of Analysis and Measurement

摘　　要：Carbon isotope of the early Proterozoic carbonates from the Hutuo Group of the type sec- tion in Wutai Mountain area,Shanxi Province,North China,is reported.Isotopic analyses have been made for 484 samples of dolomites.The carbon isotope results show:(i)δ^(13)C values distinctly change with the ge- ological time,but are relatively stable in certain horizon;(ii)like that at the Cretaceous/Tertiary and Permi- an/Triassic boundaries,δ^(13)C values also show abrupt variation across the boundaries between the Jianancun Formation and the Daguandong Formation and between the Daguandong Formation and the Huaiyincun For- mation.Carbon isotope of the early Proterozoic carbonates from the Hutuo Group of the type sec-tion in Wutai Mountain area,Shanxi Province,North China,is reported.Isotopic analyses have been madefor 484 samples of dolomites.The carbon isotope results show:（i）δ¹³C values distinctly change with the ge-ological time,but are relatively stable in certain horizon;（ii）like that at the Cretaceous/Tertiary and Permi-an/Triassic boundaries,δ¹³C values also show abrupt variation across the boundaries between the JianancunFormation and the Daguandong Formation and between the Daguandong Formation and the Huaiyincun For-mation.

关 键 词：carbon Isotope EVOLUTION DOLOMITE Early Proterozoic. 

分 类 号：P597[天文地球—地球化学]