Microfossils and molecular records in oil shales of the Songliao Basin and implications for paleo-depositional environment

  title={Microfossils and molecular records in oil shales of the Songliao Basin and implications for paleo-depositional environment},
  author={Zi-hui Feng and Wei Fang and Xue Wang and Chunyan Huang and Qiuli Huo and Juhe Zhang and Qinghua Huang and Lei Zhang},
  journal={Science in China Series D: Earth Sciences},
Several oil shale beds, over 10 m thick, occur at the base of the first member of the Upper Cretaceous Qingshankou Formation (K2qn1) in the Songliao Basin. They act both as excellent source rocks for conventional oil and as potential oil deposit for shale oil production. Here we combine micropaleontology with organic geochemistry to investigate the paleo-depositional environment and organic source characteristics of the oil shales and black shales. Our results indicate that algal remains are… Expand
Palaeoenvironmental conditions during deposition of the Upper Cretaceous oil shale sequences in the Songliao Basin (NE China): Implications from geochemical analysis
Abstract Excellent hydrocarbon source rocks (oil shales), containing Type I organic matter (OM), were deposited in the continental Songliao rift basin during the Late Cretaceous. A major contributionExpand
Tectonic and climate control of oil shale deposition in the Upper Cretaceous Qingshankou Formation (Songliao Basin, NE China)
Oil shales were deposited in the Songliao Basin (NE China) during the Upper Cretaceous period, representing excellent hydrocarbon source rocks. High organic matter (OM) contents, a predominance ofExpand
High resolution geochemical analysis of organic matter accumulation in the Qingshankou Formation, Upper Cretaceous, Songliao Basin (NE China)
Abstract In the well-known continental Songliao Basin, the oil shale successions of the Cretaceous Qingshankou Formation are excellent source rocks for oil. The oil shale layers with high TOC (totalExpand
Petrology and hydrocarbon potential of microalgal and macroalgal dominated oil shales from the Eocene Huadian Formation, NE China
Abstract A series of oil shales of middle to late Eocene age occur in the Huadian area of Jinlin Province, northeast China. Analytical results from 22 rock samples collected from an underground mineExpand
In the Songliao Basin, northeastern China, the oil shale-bearing succession in the Upper Cretaceous Qingshankou Formation contains excellent source rocks. Oil shales with different total organicExpand
Oil shale formation in the Upper Cretaceous Nenjiang Formation of the Songliao Basin (NE China): Implications from organic and inorganic geochemical analyses
Abstract Two oil shale layers are present in the Upper Cretaceous Nenjiang Formation of the Songliao Basin, representing excellent hydrocarbon source rocks. Their biomarker compositions provideExpand
Discovery of Late Cretaceous foraminifera in the Songliao Basin: Evidence from SK-1 and implications for identifying seawater incursions
The Songliao Basin is the largest oil-bearing basin in China. In the absence of sufficient evidence, the possibility of seawater incursion(s) into the Songliao Basin remains controversial. Recently,Expand
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To determine geochemical indicators for depositional environment favored by terrestrial petroleum source rocks, we selected 40 source rock samples from the Late Cretaceous Qingshankou FormationExpand
Depositional environment of the Late Santonian lacustrine source rocks in the Songliao Basin (NE China): Implications from organic geochemical analyses
Abstract The Songliao Basin (SLB) located in northeastern China is one of the largest Cretaceous continental sedimentary basins in the world. The SLB is filled with sediments deposited in the UpperExpand
Basin evolution and oil shale deposition during Upper Cretaceous in the Songliao Basin (NE China): Implications from sequence stratigraphy and geochemistry
Abstract The controlling factors of oil shale formation within the Upper Cretaceous Qingshankou and Nenjiang Formations of the Songliao Basin are investigated by petrological and geochemical methods.Expand


Distribution and characterization of C31 sterane from cretaceous sediments and oils, Songliao Basin, China
Relatively high abundance of C31 steranes has been identified from cretaceous source rocks and crude oils in the Songliao Basin, China. C31 steranes which occur as ten isomers were tentativelyExpand
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  • K. Kelts
  • Geology
  • Geological Society, London, Special Publications
  • 1988
F. A. Forel (1892–1902) established the scientific discipline of limnology with his integrated study of biology, chemistry, circulation and sedimentation in modern Lake Geneva. Subsequent literatureExpand
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Despite many investigations concerning the insoluble organic matter in sediments (kerogen), its chemical nature and origin are only poorly understood. Here we report the results of a combinedExpand
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Four sections documenting the impact of the late Cenomanian oceanic anoxic event (OAE 2) were studied in basins with different paleoenvironmental regimes. Accumulation rates of phosphorus (P) boundExpand
Organic geochemical indicators of palaeoenvironmental conditions of sedimentation
Our increasing knowledge of the geochemical processes of present-day sedimentation conditions provides a basis for evaluating the role of oxic and anoxic sedimentary environments. In particular,Expand