| PDF: | |
| Time: | 1996 |
| Journal: | Journal of ChangChun Uninersity of Earth Science |
| Volumn: | 26 |
| Issue: | 1 |
| Pages: | 47-53 |
| Type: | Other |
| Author: | Pujun Wang,Dongpo Wang,Ping Chang,Hong Li |
Abstract: | The ratios of Songliao Cretaceous black shales /SDO一1 international reference for the elements of Mn , Ca , Ba , Sr , P , Na . Zn and Th are from 2 to 100, showing signifieantly 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 value 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 conclued that biomineralization is a very common geological elements in kerogen can cause significant increase of the conterntrations in the black shales as a whole. |