Characteristics of Kerogens and Their Carbon Isotope Implications for the <?xml:namespace prefix = st1 ns = "urn:schemas-microsoft-com:office:smarttags" /><st1:PlaceName w:st="on">Shengli</st1:PlaceName> <st1:PlaceType w:st="on">River</st1:PlaceType> Oil Shale in <st1:PlaceName w:st="on">Qiangtang</st1:PlaceName> <st1:PlaceType w:st="on">Basin</st1:PlaceType>, <st1:place w:st="on">Northern Tibet</st1:place> <?xml:namespace prefix = o ns = "urn:schemas-microsoft-com:office:office" /><o:p></o:p>

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line-level: 2" class=MsoNormal>Characteristics of Kerogens and Their Carbon Isotope Implications for the Shengli River Oil Shale in Qiangtang Basin, Northern Tibet

详细信息

责任者：Fu Xiugen (Chengdu Institute of Geology and Mineral Resources ; Chengdu 610081 ; China) ; Wang Jian
刊名：Acta Geoscientica Sinica
出版年：2009
卷期：30(5)
关键词：油页岩 ; oil shale ; 羌塘盆地 ; Qiangtang Basin
页码：p.643-650
图表：4 illus., 3 tables, 26 refs.
分类号：1003
issnNo：ISSN1006-3021
isbnNo：CN11-3474/P

摘要

///The Shengli River oil shale in the southern part of northern Qiangtang Depression within northern

Tibetan P

lateau has a EW-extending length of more than 34 km and a width of 9 m in the north-south direction. Such oil shale is of great importance in the assessment of oil and gas resources in Qiangtang Basin. The oil shale has high kerogen contents and H/C ratios (1.11～1.19) and low O/C values (0.08～0.25); implying a fairly ideal source rock. The oil shale and interbedded marl from the Shengli River area in Qiangtang Basin have a remarkably heavy C_kerogen isotopic composition, ranging in δ¹³C values of the bulk organic matter from -20.79‰ to -21.78‰. The enrichment of ¹³C in the Shengli River oil shale can be attributed to a combination of the high growth rate and the sedimentary environment, with the paleo-lagoon environment obviously controlling the spatial distribution and size of oil shale.

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