Discussion on classification method of clastic sediment suitable for marine sand exploration

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  • 1. Hainan Key Laboratory of Marine Geological Resources and Environment, Haikou 570206, China;

    2. Marine Geological Institute of Hainan Province, Haikou 570206, China

Received date: 2025-02-25

  Revised date: 2025-04-11

  Accepted date: 2025-04-15

  Online published: 2025-04-15

Supported by

Financial Project of Hainan Province, China (46000025T000001444979); Financial Project of Hainan Province, China (46000021T000000002276); Open Project of Hainan Key Laboratory of Marine Geological Resources and Environment (24-HNHYDZZYHJKF044); Financial Project of Hainan Province, China (T100732)

Abstract

Over the past decade, there has been a surge in marine sand exploration and the public transfer of marine sand mining rights. Approximately 390 million cubic meters of marine sand resources have been transferred in the coastal regions of Guangdong, Guangxi, and Fujian. However, the classification of marine sand sediments remains challenging due to the variety of methods in use and the lack of a mature, unified classification system. Addressing this urgent technical issue, a suitable classification method for marine sand sediments has been proposed based on exploration practices in the waters surrounding Hainan Island. By comparing different classification methods and their application effects, this proposed scheme is represented by a diamond diagram, categorizing nine sediment types: gravel (G), sandy gravel (sG), muddy gravel (mG), gravel sand (gS), gravel mud (gM), sand (S), muddy sand (mS), sandy mud (sM), and mud (M). Additionally, a subdivision scheme has been introduced to align closely with the Folk classification method. This classification scheme is both descriptive and explanatory, concise, and emphasizes the significance of each grain grade's content, including gravel, sand, silt, and clay. It ensures practicality for sediment classification of field operations and paves the way for further laboratory research.

Cite this article

LIN Mingzhi CHEN Bo CHEN Yang . Discussion on classification method of clastic sediment suitable for marine sand exploration[J]. Journal of Tropical Oceanography, 0 : 1 . DOI: 10.11978/2025029

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