The Jimusaer oil shale (JOS) of the Upper Permian Lucaogou Formation in the southeastern margin of the Junggar Basin, Northwest China has retained a close relationship with the Bogda orogeny. JOS samples were studied for organic geochemistry, and samples of other rocks collected from between the oil shale layers (sandstone, mudstone shale, dolostone, limestone) were investigated for mineral characteristics. The results showed JOS samples to have a high total organic carbon (TOC) content, 5.35–21.45%, and a high oil yield, 3.67–10.3%. Dolomite, clay minerals, quartz, tuffaceous matrix, tuff debris, calcite, ferruginous debris, siliceous debris and anorthose could be found in the samples of other rocks. The Jimusaer oil shale was characterized by fine grain size, dark color and horizontal bedding. Depositional architecture and symbiotic rocks indicated that JOS was mainly deposited in a semi-deep to deep water environment under reducing conditions. The oil shale developed in the highstand systems tract (HST) and was enriched in organic matter.
1. Liu, Z. J., Liu, R. Oil shale resource state and evaluating system. Earth Science Frontiers (China University of Geosciences (Beijing); Peking University), 2005, 12(3), 315–323 (in Chinese, summary in English).
2. Liang, J. L., Tang, D. Z., Xu, H., Tao, S., Li, C. C., Gou, M. F. Formation conditions of Jimusaer oil shale at the northern foot of Bogda Mountain, China. Oil Shale, 2014, 31(1), 19–29.
https://doi.org/10.3176/oil.2014.1.03
3. Bai, Y. L. Prospects for development of oil shale deposits in the southeastern margin of Junggar Basin. Xinjiang Petroleum Geology, 2008, 29(4), 462–465 (in Chinese with English abstract).
4. Tao, S., Tang, D. Z., Xu, H., Cai, J. L., Gou, M. F., Chen, Z. L. Retorting properties of oil shale found at the northern foot of Bogda Mountain, China. Oil Shale, 2011, 28(1), 19–28.
https://doi.org/10.3176/oil.2011.1.03
5. Tao, S., Wang, Y. B., Tang, D. Z., Xu, H., Zhang, B., He, W., Liu, C. Composition of the organic constituents of Dahuangshan oil shale at the northern foot of Bogda Mountain, China. Oil Shale, 2012, 29(2), 115–127.
https://doi.org/10.3176/oil.2012.2.03
6. Wei, X. C., Liu, S. C., Xia, M. The genesis analysis of oil shale in southern Jimisar, Xinjiang. Xinjiang Geology, 2012, 30, 66–70 (in Chinese).
7. Bai, B. Tectono-Sedimentary Evolution and its Controls on Basic Petroleum Geological Condition of South Margin of Junggar. PhD Thesis, Northwestern University, 2008 (in Chinese).
8. Scott, A. R. Hydrogeologic factors affecting gas content distribution in coal beds. Int. J. Coal Geol., 2002, 50(1–4), 363–387.
https://doi.org/10.1016/S0166-5162(02)00135-0
9. Espitalié, J., Deroo, G., Marquis, F. Rock-Eval pyrolysis and its applications, Part II. Rev. I. Fr. Pétrol., 1985, 40, 755–784 (in French).
10. Alaug, A. S. Source rocks evaluation, hydrocarbon generation and palynofacies study of late Cretaceous succession at 16/G-1 offshore well in Qamar Basin, eastern Yemen. Arabian Journal of Geosciences, 2011, 4(3–4), 551–566.
https://doi.org/10.1007/s12517-010-0182-6
11. Fu, X. G.., Wang, J., Zeng, Y. H., Tan, F. W., Feng, X. L. REE geochemistry of marine oil shale from the Changshe Mountain area, northern Tibet, China. Int. J. Coal Geol., 2010, 81(3), 191–199.
https://doi.org/10.1016/j.coal.2009.12.006
12. Tao, S., Tang, D. Z., Xu, H., Liang, J. L., Shi, X. F. Organic geochemistry and elements distribution in Dahuangshan oil shale, southern Junggar Basin: Origin of organic matter and depositional environment. Int. J. Coal Geol., 2013, 115(8), 41–51.
https://doi.org/10.1016/j.coal.2013.05.004
13. Rippen, D., Littke, R., Bruns, B., Mahlstedt, N. Organic geochemistry and petrography of Lower Cretaceous Wealden black shales of the Lower Saxony Basin: The transition from lacustrine oil shales to gas shales. Org. Geochem., 2013, 63, 18–36.
https://doi.org/10.1016/j.orggeochem.2013.07.013
14. Bordenave, M. L. Applied Petroleum Geochemistry. Editions Technip, Paris, 1993, p 425.
15. Dembicki Jr., H. Three common source rock evaluation errors made by geologists during prospect or play appraisals. AAPG Bull., 2009, 93(3), 341–356.
https://doi.org/10.1306/10230808076
16. Bechtel, A., Jia, J., Strobl, S. A.I., Sachsenhofer, R. F., Liu, Z., Gratzer, R.,
Püttmann, W. Palaeoenvironmental conditions during deposition of the Upper Cretaceous oil shale sequences in the Songliao Basin (NE China): Implications from geochemical analysis. Org. Geochem., 2012, 46, 76–95.
https://doi.org/10.1016/j.orggeochem.2012.02.003
https://doi.org/10.3176/oil.2016.2.04
