Quaternary high-resolution opal record and its paleoproductivity implication at ODP Site 1143, southern South China Sea

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doi: 10.1007/BF03183231
Author(s): Wang Rujian; Li Jian
Author Affiliation(s): Primary:
Tongji University, Laboratory of Marine Geology, Shanghai, China
Volume Title: Chinese Science Bulletin
Source: Chinese Science Bulletin, 48(4), p.363-367. Publisher: Science Press, Beijing, China. ISSN: 1001-6538
Note: In English. 37 refs.; illus., incl. 1 table, sketch map
Summary: The correlation of opal content and MAR with oxygen isotopic records of benthonic foraminifera at Site 1143, southern South China Sea indicates that, since about 900 ka, the increasing opal content and MAR during the interglacial periods is inferred to reflect the higher surface productivity, for the intensified summer monsoon during the interglacial periods would result in the enhanced upwelling and nutrient supply. Time-sequence spectral analyses of oxygen isotopic record, opal content and MAR at intervals of 0-900 ka reveal that the changes of surface productivity were dominantly forced by the variations of the earth orbital cycles.
Year of Publication: 2003
Research Program: ODP Ocean Drilling Program
Key Words: 02 Geochemistry; 24 Surficial Geology, Quaternary Geology; Benthic taxa; Cenozoic; Chemostratigraphy; Foraminifera; Framework silicates; Geochemistry; High-resolution methods; Interglacial environment; Invertebrata; Isotope ratios; Isotopes; Leg 184; Microfossils; North Pacific; Northwest Pacific; O-18/O-16; ODP Site 1143; Ocean Drilling Program; Opal; Oxygen; Pacific Ocean; Productivity; Protista; Quaternary; Sedimentation; Silica minerals; Silicates; South China Sea; Stable isotopes; West Pacific
Coordinates: N092143 N092143 E1131707 E1131707
Record ID: 2003047712
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