| YAN Quanshu,SHI Xuefa,WANG Kunshan. 2007. Mineral provinces and material provenance of the surficial sediments near the Zhongsha Islands in the South China Sea. Acta Oceanologica Sinica, (1):66－76 |
| Mineral provinces and material provenance of the surficial sediments near the Zhongsha Islands in the South China Sea |
| Mineral provinces and material provenance of the surficial sediments near the Zhongsha Islands in the South China Sea |
| Received:April 17, 2006 Revised:August 22, 2006 |
| DOI： |
| Key words:South China Sea Zhongsha Islands light mineral minerals province material provenance |
| 中文关键词: South China Sea Zhongsha Islands light mineral minerals province material provenance |
| 基金项目: |
| Author Name | Affiliation | E-mail | | YAN Quanshu | Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, China
Key Laboratory of Marine Sedimentology and Environment Geology of State Oceanic Administration, First Institute of Oceanograghy, State Oceanic Administration, Qingdao 266061, China
Graduate School, Chinese Academy of Sciences, Beijing 100049, China | | | SHI Xuefa | Key Laboratory of Marine Sedimentology and Environment Geology of State Oceanic Administration, First Institute of Oceanograghy, State Oceanic Administration, Qingdao 266061, China | xfshi@public.qd.sd.cn | | WANG Kunshan | Key Laboratory of Marine Sedimentology and Environment Geology of State Oceanic Administration, First Institute of Oceanograghy, State Oceanic Administration, Qingdao 266061, China | |
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| Abstract: |
| Characteristics and distribution patterns of clastic minerals (0.063~0.125 mm) in bottom sediments represent a significant indicator for the identification of the origin of sediment.One hundred and fourteen surface sediment samples, which were collected from the area near the Zhongsha Islands in the South China Sea, were analysed to identify the mineral suites and their distributions in the study area.The area can be divided into three mineral provinces:(Ⅰ) a province of biogenic minerals, which mainly originate from the Zhongsha Atoll; (Ⅱ) a province of volcanogenic minerals, which are mainly derived from local basaltic seamounts and small-scale volcanoes that are probably erupting, with some influences from the island-arc volcanic region around the South China Sea; and (Ⅲ) a mixed mineral province whose material source includes biogenic minerals, volcanogenic minerals and terrigenous minerals; the last province can be subdivided into a mixed mineral sub-province of the northeastern part of the study area, in which terrigenous minerals are mainly derived from China's Mainland and do not exceed 17°N, and a mixed mineral sub-province of the southeastern part of the study area, in which terrigenous minerals are derived from Kalimantan and Indochina Peninsula and might be further transported into the deep sea basin through submarine canyons. |
| 中文摘要: |
| Characteristics and distribution patterns of clastic minerals (0.063~0.125 mm) in bottom sediments represent a significant indicator for the identification of the origin of sediment.One hundred and fourteen surface sediment samples, which were collected from the area near the Zhongsha Islands in the South China Sea, were analysed to identify the mineral suites and their distributions in the study area.The area can be divided into three mineral provinces:(Ⅰ) a province of biogenic minerals, which mainly originate from the Zhongsha Atoll; (Ⅱ) a province of volcanogenic minerals, which are mainly derived from local basaltic seamounts and small-scale volcanoes that are probably erupting, with some influences from the island-arc volcanic region around the South China Sea; and (Ⅲ) a mixed mineral province whose material source includes biogenic minerals, volcanogenic minerals and terrigenous minerals; the last province can be subdivided into a mixed mineral sub-province of the northeastern part of the study area, in which terrigenous minerals are mainly derived from China's Mainland and do not exceed 17°N, and a mixed mineral sub-province of the southeastern part of the study area, in which terrigenous minerals are derived from Kalimantan and Indochina Peninsula and might be further transported into the deep sea basin through submarine canyons. |
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