| SEDIMENTARY PROPERTIES AND ENVIRONMENTAL VARIATIONS FROM CONTINENTAL SLOPE TO DEEP SEA PLAIN IN THE NORTHERN SOUTH CHINA SEA SINCE LATE PLEISTOCENE |
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| 作者姓名： | 冯文科 杨达源 黎维锋 |
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| 作者单位： | Marine Geological Investigation Brigade，Ministry of Geology and Mineral Resources，Guangzhou，Department of Geography，Nanjing University.，Marine Geological Investigation Brigade，Ministry of Geology and Mineral Resources，Guangzhou |
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| 摘 要： | The South China Sea is the westernmost marginal sea in the west Pacific Ocean. On thebasis of the analyses of sedimentary components, biofossils, oxygen-carbon isotopes and theirdatings in four seafloor cores which were collected from the deep sea plain to continentalslope in the northern South China Sea, the environmental variations were basically similarto other tropical ocean areas, and their cycle changes in about the ages of 40 ka and 20 kawere more apparent since the late Pleistocene. During the warm climates, the depositionrate on the continental slope was about 2.6 times as rapid as on the deep sea plain margin.The seafloor in the deep sea plain was below the CaCO_3 compensation depth. During thecold periods, however, the deposition rate on the deep sea plain margin was slightly quickerthan on the continental slope due to the sea level reduction on a larger scale and moresupply of the terrigenous clastics.
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SEDIMENTARY PROPERTIES AND ENVIRONMENTAL VARIATIONS FROM CONTINENTAL SLOPE TO DEEP SEA PLAIN IN THE NORTHERN SOUTH CHINA SEA SINCE LATE PLEISTOCENE |
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| FENG WEN-KE,YANG DA-YUAN,LI WEI-FENG Marine Geological Investigation Brigade,Ministry of Geology and Mineral Resources,Guangzhou.SEDIMENTARY PROPERTIES AND ENVIRONMENTAL VARIATIONS FROM CONTINENTAL SLOPE TO DEEP SEA PLAIN IN THE NORTHERN SOUTH CHINA SEA SINCE LATE PLEISTOCENE[J].Science in China(Chemistry),1989(7). |
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| Authors: | FENG WEN-KE YANG DA-YUAN LI WEI-FENG Marine Geological Investigation Brigade Ministry of Geology and Mineral Resources Guangzhou |
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| Institution: | FENG WEN-KE,YANG DA-YUAN,LI WEI-FENG Marine Geological Investigation Brigade,Ministry of Geology and Mineral Resources,Guangzhou Department of Geography,Nanjing University. |
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| Abstract: | The South China Sea is the westernmost marginal sea in the west Pacific Ocean. On thebasis of the analyses of sedimentary components, biofossils, oxygen-carbon isotopes and theirdatings in four seafloor cores which were collected from the deep sea plain to continentalslope in the northern South China Sea, the environmental variations were basically similarto other tropical ocean areas, and their cycle changes in about the ages of 40 ka and 20 kawere more apparent since the late Pleistocene. During the warm climates, the depositionrate on the continental slope was about 2.6 times as rapid as on the deep sea plain margin.The seafloor in the deep sea plain was below the CaCO_3 compensation depth. During thecold periods, however, the deposition rate on the deep sea plain margin was slightly quickerthan on the continental slope due to the sea level reduction on a larger scale and moresupply of the terrigenous clastics. |
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| Keywords: | deep sea sediment natural environment palaeoclimate |
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