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    Volume 51 Issue 5
    May  2026
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    Article Navigation >  Earth Science  > 2026  >  51(5): 1965-1981
    He Xiaohu, Jiang Tao, Feng Jingzi, Zhang Yazhen, Yuan Binglong, Liu Guochang, He Jie, 2026. Characteristics and Genetic Analysis of Coarse-Grained and Fine-Grained Source-to-Sink Systems in Dongfang Area of Yinggehai Basin during Late Miocene. Earth Science, 51(5): 1965-1981. doi: 10.3799/dqkx.2025.251
    Citation: He Xiaohu, Jiang Tao, Feng Jingzi, Zhang Yazhen, Yuan Binglong, Liu Guochang, He Jie, 2026. Characteristics and Genetic Analysis of Coarse-Grained and Fine-Grained Source-to-Sink Systems in Dongfang Area of Yinggehai Basin during Late Miocene. Earth Science, 51(5): 1965-1981. doi: 10.3799/dqkx.2025.251
    shu

    Characteristics and Genetic Analysis of Coarse-Grained and Fine-Grained Source-to-Sink Systems in Dongfang Area of Yinggehai Basin during Late Miocene

    doi: 10.3799/dqkx.2025.251
    • 1.

      State Key Laboratory of Petroleum Resources and Engineering, China University of Petroleum (Beijing), Beijing 102249, China

    • 2.

      Hubei Key Laboratory of Marine Geological Resources, China University of Geosciences (Wuhan), Wuhan 430074, China

    • 3.

      Hainan Branch of China National Offshore Oil Corporation Limited, Haikou 570312, China

    • 4.

      CNOOC South China Sea Oil & Gas Energy Academician Workstation, Haikou 570312, China

    • Received Date: 2025-09-18
    • Publish Date: 2026-05-25
      Abstract
    • In order to understand the different characteristics of the source-sink system of the first member of the Huangliu Formation in the eastern part of the Yinggehai basin, the provenance characteristics of coarse-grained and fine-grained sediments in the first member of Huangliu Formation in the eastern part of Yinggehai basin were quantitatively analyzed by means of mineralogy, zircon U-Pb chronology and Sr-Nd isotope analysis. The results show that the average source proportion of the Late Miocene coarse-grained sediments in the eastern part of Yinggehai Basin can reach about 65%, with that in central Vietnam at about 16%, and that in Hainan Island at about 19%. The average source of fine sediment is about 44% in Red River, about 37% in central Vietnam and about 19% in Hainan Island. Coarse-grained sediments have higher Red River provenance and less central Vietnam provenance than fine-grained sediments, presumably due to the rapid uplift of the Qinghai-Tibet Plateau and the reversal of the Red River fault zone in the Late Miocene. Furthermore, the differences in the characteristics of the source-sink systems of coarse-grained and fine-grained sediment are also influenced by the lower content of heavy minerals and the higher content of mud in the sediments.

       

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