Abstract：With the great breakthrough of the exploration for oil and gas in Uganda block of East Africa Rift Valley, more attentions are paid to Tanganyika Graben exploration potential as its petroleum geological conditions is similar to Uganda block. Tanganyika Graben locates in East Africa and is the middle part of western branch of East Africa Rift Valley. It is a typical continental rift basin filled by sediments from Later Miocene and currently covered by Lake Tanganyika which is a deep fresh lake. The entire graben can be divided into two sub-basins and takes on the structure framework of two depressions surrounded by three uplifts. Although it is a low exploration basin, it can be inferred that the mature source rock should insisted in the deep area and has relatively large potential and scale. As an inland lake, the provenance is relatively sufficient so the reservoir and seal condition is good enough. Since the multi-stages tectonic alternation, the structural traps can be found in a large amount. In conclusion, most of the conditions are tend to form effective reservoirs and there is a large potential for exploration. The transformation zone of basin is the best area for petroleum accumulation.
赵 伟， 韩文明， 胡 滨. 东非裂谷Tanganyika地堑石油地质特征和勘探潜力分析[J]. 中国地质调查, 2016, 3(1): 14-19.
ZHAO Wei, HAN Wenming, HU Bin. Geological conditions and exploration potential of Tanganyika Basin in East Africa Rift Valley. , 2016, 3(1): 14-19.
[1] Lezzar K E,Tiercelin J,Batist M D,et al.New seismic stratigraphy and Late Tertiary history of the North Tanganyika Basin,East African Rift system,deduced from multichannel and high-resolution reflection seismic data and piston core evidence[J].Basin Research,1996,8(1):1-28. [2] 郭曦泽,侯贵廷.东非裂谷系西支(湖区)油气资源潜力评价与分析[J].地球科学前沿,2014,4(2): 94-103. [3] 张可宝,史卜庆,徐志强,等.东非地区沉积盆地油气潜力浅析[J].天然气地球科学,2007,18(6):869-874. [4] 温志新,童晓光,张光亚,等.东非裂谷系盆地群石油地质特征及勘探潜力[J].中国石油勘探,2012,17:60-65. [5] Chorowicz J.The East African Rift system[J].Journal of African Earth Sciences,2005,43(1/2/3):379-410. [6] Tiercelin J J.Control of normal fault interaction on the distribution of major Neogene sedimentary depocenters,Lake Tanganyika,East African Rift[J].AAPG Bulletin,2002,86(6):1027-1059. [7] Morley C K,李士范.东非裂谷系中的转换带及其与裂谷中油气勘探的关系[J].海洋石油,1991(2):68-78. [8] Morley C K,Nelson R A,Munn T L P G.Transfer zones in the East African Rift System and their relevance to hydrocarbon exploration in rifts[J].AAPG Bulletin,1990,74(8):1234-1253. [9] Bosworth W.Geological evolution of the Red Sea: Historical back-ground,review,and synthesis[M].Berlin,Heidelberg:Springer,2015:45-78. [10] Tiercelin J J,Soreghan M.Sedimentation in large rift lakes-example from the middle Pleistocene-modern deposits of the Tanganyika trough,East-African Rift system[J].Bulletin Des Centres De Recherches Exploration Production Elf Aquitaine,1992,16(1):83-111. [11] Cohen A S,Talbot M R,Dettman D L,et al.Lake level and paleoenvironmental history of Lake Tanganyika,Africa,as inferred from late Holocene and modern stromatolites[J].Geological Society of America Bulletin,1997,109(4):444-460. [12] 于水,韩文明,赵伟,等.裂谷盆地陡断带三角洲沉积特征与成因模式——以东非裂谷Albertine地堑为例[J].中国海上油气,2013,25:31-35.
2016, Vol. 3 
