Li Jian and Wang Rujian (2004): Paleoproductivity variability of the northern South China Sea during the past 1 Ma; the opal record from ODP Site 1144

Leg/Site/Hole:
ODP 184
ODP 184 1144
Identifier:
2009-037131
georefid
Creator:
Li Jian
Tongji University, Laboratory of Marine Geology, Shanghai, China
author
Wang Rujian
author
Identification:
Paleoproductivity variability of the northern South China Sea during the past 1 Ma; the opal record from ODP Site 1144
2004
Dizhixue Bao = Acta Geologica Sinica
Science Press, Beijing, China
78
2
228-233
A biogenic silica analysis was performed on 857 samples at ODP Site 1144 in the northern South China Sea. The correlation of opal content and MAR with oxygen isotope records of planktonic Foraminifera shows that they increased during glacial periods and decreased during interglacial periods. Increases in opal content and MAR after the middle Pleistocene (about 0.9 Ma) resulted from higher surface productivity, which was induced by the intensified monsoon circulation after the "Mid-Pleistocene Revolution" and the special situation of Site 1144. Time-sequence spectral analyses of the oxygen isotope record, opal content and MAR reveal that the variability in surface productivity was predominantly forced by Earth's orbital cycles.
Chinese
Serial
Coverage:Geographic coordinates:
North:20.0311
West:117.2508East: 117.2508
South:20.0311
Quaternary geology; Cenozoic; climate forcing; framework silicates; Leg 184; marine sediments; North Pacific; Northwest Pacific; Ocean Drilling Program; ODP Site 1144; opal; orbital forcing; Pacific Ocean; paleoproductivity; Pleistocene; productivity; Quaternary; sediments; silica minerals; silicates; South China Sea; upper Pleistocene; variations; West Pacific;
.