Oil & Gas Geology ›› 1990, Vol. 11 ›› Issue (2): 178-186.doi: 10.11743/ogg19900206
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Yu Huilong, Zhang Jinliang, Xu Lunxun
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Abstract:
The total content of REE(ΣREE)from mudstones of the Eogene Shahejie Forma-tion in Dongpu Depression is relatively high,the average value is 215.34 ppm.Ce is thehighest of the REE group,ΣCe is richer than ΣY and ΣCe/ΣY is also high(2.73 on aver-age).These mudstones yield right declined W-shapped curves with negative Ce and Euanomalies,therefore,their REE distribution patterns are parallel to each other.In addi-tion,the REE parameters(Ce/Ce①,Eu/Eu①,Sm/Nd,ΣCe/ΣY,LaN/SmN and CeN/YbN) only vary with in a narrow range with small deviations.This indicates that theywere deposited in a lake basin environment.
Yu Huilong, Zhang Jinliang, Xu Lunxun. REE GEOCHEMICAL CHARACTERISTICS OF MUDSTONES FROM EOGENE SHAHEJIE FORMATION IN DONGPU DEPRESSION[J]. Oil & Gas Geology, 1990, 11(2): 178-186.
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URL: http://ogg.pepris.com/EN/10.11743/ogg19900206
http://ogg.pepris.com/EN/Y1990/V11/I2/178