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Controlling Factors for Organic Carbon Burial in the Late Cretaceous Nenjiang Formation of the Songliao Basin, NE China

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  • Lu Niu

    (State Key Laboratory of Biogeology and Environmental Geology, China University of Geosciences (Beijing), Beijing 100083, China
    School of Earth Science and Resources, China University of Geosciences (Beijing), Beijing 100083, China)

  • Yuan Gao

    (State Key Laboratory of Biogeology and Environmental Geology, China University of Geosciences (Beijing), Beijing 100083, China
    School of Earth Science and Resources, China University of Geosciences (Beijing), Beijing 100083, China)

  • He Huang

    (State Key Laboratory of Biogeology and Environmental Geology, China University of Geosciences (Beijing), Beijing 100083, China
    School of Earth Science and Resources, China University of Geosciences (Beijing), Beijing 100083, China)

  • Xing Tian

    (State Key Laboratory of Biogeology and Environmental Geology, China University of Geosciences (Beijing), Beijing 100083, China
    School of Earth Science and Resources, China University of Geosciences (Beijing), Beijing 100083, China)

  • Tian Dong

    (State Key Laboratory of Biogeology and Environmental Geology, China University of Geosciences (Beijing), Beijing 100083, China
    School of Earth Science and Resources, China University of Geosciences (Beijing), Beijing 100083, China)

  • Qian Yang

    (State Key Laboratory of Biogeology and Environmental Geology, China University of Geosciences (Beijing), Beijing 100083, China
    School of Earth Science and Resources, China University of Geosciences (Beijing), Beijing 100083, China)

  • Xiaomeng Cao

    (Laboratory for Marine Geology, Pilot National Laboratory for Marine Science and Technology (Qingdao), Qingdao 266237, China)

  • Chengshan Wang

    (State Key Laboratory of Biogeology and Environmental Geology, China University of Geosciences (Beijing), Beijing 100083, China
    School of Earth Science and Resources, China University of Geosciences (Beijing), Beijing 100083, China)

Abstract

The Songliao Basin (SLB) is a large terrestrial petroliferous basin located in northeastern China. The Nenjiang Formation represents excellent hydrocarbon source rocks for the Daqing oil field. Previous studies have indicated that the oil shale intervals from the first (K 2 n 1 ) and second (K 2 n 2 ) members of the Nenjiang Formation were formed in different depositional settings. In this study, we provide a new high-resolution (1 m interval) record from SK-1s core and compile three sets of published datasets from two drilling holes (Zk3389 and LY-1) and a composite outcrop section. According to the total organic carbon (TOC) chemostratigraphy, we have divided three variation cycles spanning from K 2 n 1 to K 2 n 2 and detected three potential oil shale intervals in the Nenjiang Formation. Combined with the productivity, salinity, and oxygenation proxies, we discuss the paleolimnological environmental changes during deposition of the Nenjiang Formation. Our new and compiled records support the model that excellent preservation conditions were associated with the formation of organic-rich sediments in the K 2 n 1 , while the productivity was the major controlling factor for organic matter enrichment in the K 2 n 2 .

Suggested Citation

  • Lu Niu & Yuan Gao & He Huang & Xing Tian & Tian Dong & Qian Yang & Xiaomeng Cao & Chengshan Wang, 2021. "Controlling Factors for Organic Carbon Burial in the Late Cretaceous Nenjiang Formation of the Songliao Basin, NE China," Energies, MDPI, vol. 14(16), pages 1-11, August.
    • Handle: RePEc:gam:jeners:v:14:y:2021:i:16:p:4783-:d:609584
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    References listed on IDEAS

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    1. Britta Beckmann & Sascha Flögel & Peter Hofmann & Michael Schulz & Thomas Wagner, 2005. "Orbital forcing of Cretaceous river discharge in tropical Africa and ocean response," Nature, Nature, vol. 437(7056), pages 241-244, September.
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