Print this pageThe marine sedimentary basins in Southern Tibet include the Dingri-Gangba basin and the Gyangze basin. The Cretaceous strata of the basins are mainly made up of black shale, mudstone, marl, and carbonate. In Cretaceous, the Dingri-Gangba basin belongs to the India stable passive continental margin, while the Gyangze basin is a tectonically active deep-water. Our preliminary study shows the Cretaceous contains various types of hydrocarbon source rock with high organic abundance. This research will be focused on the poorly studied petroleum geology and depositional environment of the Cretaceous hydrocarbon source rocks. We will accomplish our goal by way of petroleum geology, geochemistry, and sedimentary geology and will especially emphasis on the research of organic geochemistry, hydrocarbon source rocks and hydrocarbon-bearing palaeoenvironment. The standard geochemical technologies include Rock-Eval pyrolysis, Soxhlet extraction, total organic carbon, and computerized chromatagraphy/mass spectrometry. The organic geochemical parameter will used to interpret the organic source input, maturity, and deposit environment.
The main objectives of this research include: (1) to determine the organic richness of the Cretaceous source rocks; (2) to examine the prospects of gas and oil resources in Southern Tibet; (3) to assess the depositional condition of the Cretaceous source rocks.
AAPG Search and Discovery Article #90925©1999 AAPG Foundation Grants-in-Aid