Patterns of shelf margin clinoform: control of the development of deep-water sedimentary systems

IF 2.8 2区生物学 Q1 MARINE & FRESHWATER BIOLOGY

Frontiers in Marine Science Pub Date : 2025-02-24 DOI:10.3389/fmars.2025.1519179

Tong Li, Detian Yan, Entao Liu, Junfeng Zhang, Xiaosong Wei, Zeyu Lu, Xudong Lin

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Abstract

The clinothem is the fundamental element of basin infill and plays an important role in the source-to-sink system of deep-water basins. In this study, which is based on 2D and 3D seismic data, the spatiotemporal evolution of clinothems and depositional systems from the Miocene to the Pleistocene in the Qiongdongnan Basin, northern South China Sea, is investigated. The following conclusions are drawn: (1) three variations of clinothems in the Qiongdongnan Basin were recognized respective O-, S- and F-type clinothems; (2) fluctuations in the relative base level, in combination with variations in sediment supply, result in different clinothem patterns that may be used to understand changes in these depositional factors; and (3) the development of O-type clinothem is usually accompanied by slope instability and slumping, leading to mass transport deposits on the basin plain. When suitable transport pathways exist (e.g., shelf canyons) on the shelf-edge or when the F-type clinothem develops, sediments can be dispersed basinward, promoting submarine fan development. Results from this study will help in understanding the sedimentological development of slope and basin plain areas and offers significant insights into the understanding of deep-sea depositional systems.

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来源期刊

Frontiers in Marine Science Agricultural and Biological Sciences-Aquatic Science

CiteScore

5.10

自引率

16.20%

发文量

2443

审稿时长

14 weeks

期刊介绍： Frontiers in Marine Science publishes rigorously peer-reviewed research that advances our understanding of all aspects of the environment, biology, ecosystem functioning and human interactions with the oceans. Field Chief Editor Carlos M. Duarte at King Abdullah University of Science and Technology Thuwal is supported by an outstanding Editorial Board of international researchers. This multidisciplinary open-access journal is at the forefront of disseminating and communicating scientific knowledge and impactful discoveries to researchers, academics, policy makers and the public worldwide. With the human population predicted to reach 9 billion people by 2050, it is clear that traditional land resources will not suffice to meet the demand for food or energy, required to support high-quality livelihoods. As a result, the oceans are emerging as a source of untapped assets, with new innovative industries, such as aquaculture, marine biotechnology, marine energy and deep-sea mining growing rapidly under a new era characterized by rapid growth of a blue, ocean-based economy. The sustainability of the blue economy is closely dependent on our knowledge about how to mitigate the impacts of the multiple pressures on the ocean ecosystem associated with the increased scale and diversification of industry operations in the ocean and global human pressures on the environment. Therefore, Frontiers in Marine Science particularly welcomes the communication of research outcomes addressing ocean-based solutions for the emerging challenges, including improved forecasting and observational capacities, understanding biodiversity and ecosystem problems, locally and globally, effective management strategies to maintain ocean health, and an improved capacity to sustainably derive resources from the oceans.