【摘要】 松辽盆地白垩系油页岩中的Ｍｎ、Ｃａ、Ｂａ、Ｓｒ、Ｐ、Ｎａ、Ｚｎ、Ｔｈ等元素含量高于国际标样（ＳＤＯ－１）２～１００倍，呈明显富集趋势。有机质（干酪根）中Ｚｎ、Ｂａ、Ｃｕ、Ｍｏ、Ｐｂ、Ｎｉ、Ｙ、Ｃｏ、Ｍｇ、Ｂ等元素含量高于其页岩平均含量１．５～２００倍，说明有机质相是它们的＂富集相＂。油页岩物相分析显示，只有Ｚｎ和Ｂａ等少数元素是以有机质相为＂载体相＂（即有机相中所含元素的量占岩石中该元素总含量的５０％以上）。据上述研究作者认为，油页岩中生物有机质对多种金属元素都具有显著富集作用；但只有当有机质相既是金属元素的＂富集相＂同时又是该元素的＂载体相＂时，生物有机质对它的矿化作用才具有实际意义。更多还原

【Abstract】 The ratios of Songliao Cretaceous black shales/SDO-1 international reference for the elements of Mn,Ca,Ba,Sr,P,Na,Zn and Th are from 2 to 100,showing significantly metallic enrichment in the black shales.The concerntrations of Zn,Ba,Cu,Mo,Pb,Ni,Y,Co,Mg and B in kerogen are 1.5￣200 times higher compared to the mean values in the corresponding black shales,indicating that kerogen is the enrichment facies of these elements. But the sequencial analysis results of the black shales tell us that only a small number of the enriched elements are carried by kerogen,which are mainly Zn and Ba.According to the study above,the authors concluded that biomineralization is a very common geological process in the formation of the black shales,but only a few out of the enriched elements in kerogen can cause significant increase of the conterntrations in the black shales as a whole.更多还原