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《GEOCHIMICA》 1996-05
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A STUDY ON THE DATING OF DEPOSIT CORE NS90-103FROM THE SOUTH CHINASEA

Wei Gangjian; Gui Xuntang; Yu Jinsheng(Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou 510640)  
The sediments from the core NS90-103 from the South China Sea were dated by the oxygen isotopic stratigraphy established by planktonic foramilifera Globigerinoides Sacculifer and deposit accumulating rate established by uranium series disequilibrium method. The curve of δ ̄(18)O value vs. depth of samples collected continuously from the core NS90-103, shows that the core had spanned 7 main climatic periods and the lowest end of the core (550cm in depth) was equal to the period between oxygen stage 7.4 and stage 7.5, which was about 238ka in age. A deposit accumulating rate of about 2.3cm/ka was obtained by measuring excess ̄(230)Th of the deposits. According to this rate, the age of the lowest end of core NS90-103 was about 239ka, which was concordant with that of the oxygen isotopic stratigraphy.
【Fund】: 国家自然科学基金
【CateGory Index】: P736.213
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【References】
Chinese Journal Full-text Database 1 Hits
1 WEI Gangjian GUI Xuntang LI Xianhua CHEN Yuwei & YU Jinsheng Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou 510640, China Department of Geology, National Taiwan University, Taibei, China;Strontium and neodymium isotopic compositions of detrital sediment of NS90-103 from South China Sea: Variations and their paleoclimate implication[J];Science in China(Series D:Earth Sciences);2000-06
【Co-references】
Chinese Journal Full-text Database 1 Hits
1 Wei Gangjian; Gui Xuntang; Yu Jinsheng(Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou 510640);A STUDY ON THE DATING OF DEPOSIT CORE NS90-103FROM THE SOUTH CHINASEA[J];地球化学;1996-05
【Secondary References】
Chinese Journal Full-text Database 1 Hits
1 LIANG Xirong WEI Gangjian, SHAO Lei LI Xianhua WANG Rucheng1. Guangzhou Institute of Geochemistry, Chinese Academy of sciences, Guangzhou 510640, China;2. Key Laboratory of Marine Geology, Ministry of Education, Tongji University, Shanghai 200092, China;3. National Key Laboratory of Metallogenetics, the Department of Geosciences, Nanjing University, Nanjing 210093, China;Records of Toba eruptions in the South China Sea——Chemical characteristics of the glass shards from ODP 1143A[J];Science in China(Series D:Earth Sciences);2001-10
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