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Sources and transport of clay mineral in surface sediments of the sea of northeastern Seychelles Islands
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Jiaxing Wu1, Shengfa Liu1, 2, *, Peng Cao1, 2, Hui Zhang1, Mu Huang1, Yanguang Liu1, 2, Xuefa Shi1, 2
Haiyang Xuebao | 2023, 45(6) : 160 - 170
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Haiyang Xuebao | 2023, 45(6): 160-170
• Research Note •
Sources and transport of clay mineral in surface sediments of the sea of northeastern Seychelles Islands
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Jiaxing Wu1, Shengfa Liu1, 2, *, Peng Cao1, 2, Hui Zhang1, Mu Huang1, Yanguang Liu1, 2, Xuefa Shi1, 2
Affiliations
  • 1Key Laboratory of Marine Geology and Metallogenesis, Ministry of Natural Resources, The First Institute of Oceanography, Ministry of Natural Resources, Qingdao 266061, China
  • 2Laboratory for Marine Geology, Pilot National Laboratory for Marine Science and Technology (Qingdao), Qingdao 266061, China
Published: 2023-06-30 doi: 10.12284/hyxb2023085
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The relative contents of clay minerals in 34 surface sediment samples were analyzed by X-ray diffraction. The results showed that the content of clay minerals in the surface sediments was illite (35%), palygorskite (20%), smectite (20%), kaolinite (16%) and chlorite (10%). Q-cluster analysis using SPSS software shows that clay minerals can be divided into two provinces (Province I and Province II). Province I covers most of the northern area, and the source is mainly the dust influx from the deserts of Arabian Peninsula, western India and Somali coast; Province II is located at the southwest of the study area, mainly receiving the weathering matters from the granite bedrock of Seychelles Plateau. A comprehensive analysis of the sources of fine particulate matter in the study area and the regional dynamical environment reveals that the southward transport of the aeolian dust from the Arabian Peninsula, western India and the Somali coastal deserts by the South Asian summer monsoon controls the composition of clay minerals in the Province I. The south equatorial low latitude ocean current system promotes the meridional diffusion of fine particles in the study area. The southern Equatorial Counter Current drives the eastward diffusion of kaolinite and chlorite-rich fine materials from Seychelles Plateau.

sediment  /  clay minerals  /  provenance  /  monsoon  /  ocean currents  /  western Indian Ocean
Jiaxing Wu, Shengfa Liu, Peng Cao, Hui Zhang, Mu Huang, Yanguang Liu, Xuefa Shi. Sources and transport of clay mineral in surface sediments of the sea of northeastern Seychelles Islands[J]. Haiyang Xuebao, 2023 , 45 (6) : 160 -170 . DOI: 10.12284/hyxb2023085
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Article Info
doi: 10.12284/hyxb2023085
  • Receive Date：2022-08-31
  • Online Date：2025-12-26
  • Published：2023-06-30
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  • Received：2022-08-31
  • Revised：2023-01-16
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Affiliations
    1Key Laboratory of Marine Geology and Metallogenesis, Ministry of Natural Resources, The First Institute of Oceanography, Ministry of Natural Resources, Qingdao 266061, China
    2Laboratory for Marine Geology, Pilot National Laboratory for Marine Science and Technology (Qingdao), Qingdao 266061, China
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表12种不同金属材料的力学参数
科
Family		 属数
Number of
genus		 种数
Number of
species		 占总种数比例
Percentage of
total species (%)		 属
Genus		 种数
Number of
species		 占总种数比例
Percentage of total
species (%)
鹅膏菌科Amanitaceae 2 11 5.26 鹅膏菌属 Amanita 10 4.78
小菇科 Mycenaceae 2 12 5.74 丝盖伞属 Inocybe 5 2.39
多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
小菇属 Mycena 11 5.26
光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
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