PROTEROZOIC

作品数：200被引量：849H指数：14
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Sedimentary characteristics of Mg-rich carbonate formations and minerogenic fluids of magnesite and talc occurrences in early Proterozoic in eastern Liaoning Province, China被引量：1
《Science China Chemistry》2002年第z1期84-92,共9页陈从喜 鲁安怀 蔡克勤 翟裕生 
There are large to superlarge magnesite and talc deposits occurring in Mg-rich carbonate formations distributed in the early Proterozoic Dashiqiao Formation in eastern Liaoning Province, China. The discovery of the se...
关键词：magnesite  talc  minerogenic fluid  EASTERN LIAONING Province  early Proterozoic. 
Carbon Isotope Evolution of Early Proterozoic Dolomites of Wutai Mountain Area,North China被引量：1
《Science China Chemistry》1994年第12期1525-1528,共4页钟华 马永生 霍卫国 姚御元 
the National Natural Science Foundation of China;Zhongguancun Associated Center of Analysis and Measurement
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 dolomite...
关键词：carbon Isotope EVOLUTION DOLOMITE Early Proterozoic. 
GEOCHEMICAL CHARACTERISTICS AND GENESIS OF STRATABOUND GOLD DEPOSITS IN JIANGNAN GOLD METALLOGENIC BELT被引量：3
《Science China Chemistry》1992年第2期240-256,共17页马东升 刘英俊 
This paper, based on the geochemical study and comparison of the gold-bearing formations and stratabound gold deposits hosted by the formations in the belt, shows that the most outstanding geochemical characteristics ...
关键词：STRATABOUND gold deposit geochemistry METALLOGENESIS Proterozoic. 
A NOVEL TRICYCLIC TERPANE BIOMARKER SERIES IN THE UPPER PROTEROZOIC BITUMINOUS SANDSTONE, EASTERN YANSHAN REGION被引量：3
《Science China Chemistry》1991年第4期479-489,共11页王铁冠 
Project funded by the Bio- and Gas-geochemistry Laboratory, Lanzhou Institute of Geology, Academia Sinica.
Based on coinjection and/or comparison with synthesized standards, a novel C_(18-23) tricy-clic terpane series with a base peak at m/z 123 on their mass spectra have been detected andconclusively identified from the b...
关键词：PROTEROZOIC fossil oil pool 13α(n-alkyl)-tricyclic TERPANE SERIES dehydroditerpenoids source input 
MICROFOSSILS FROM LATE PROTEROZOIC MANGANESE ORE DEPOSITS IN WESTERN HUNAN PROVINCE AND EASTERN GUIZHOU PROVINCE, SOUTH CHINA被引量：2
《Science China Chemistry》1990年第6期726-734,共9页尹磊明 
Project supported by the National Natural Science Foundation of China.
Abundant microfossils and organic residuals have been discovered by SEM and normal palynological maceration from manganese ore beds intercalated in late Proterozoic glacial rock units in western Hunan Province and eas...
关键词：eastern GUIZHOU and western HUNAN late PROTEROZOIC MANGANESE ore deposits microorganisms. 
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