The Component Characteristics and Paleoenvironmental Significances for Sediments in Core 83PC from the Xisha Trough, <?xml:namespace prefix = st1 ns = "urn:schemas-microsoft-com:office:smarttags" /><st1:place w:st="on">South China Sea</st1:place>

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The Component Characteristics and Paleoenvironmental Significances for Sediments in Core 83PC from the Xisha Trough, South China Sea

详细信息

责任者：Cai Guanqiang (Guangzhou Marine Geological Survey ; Guangzhou 510760 ; China) ; Peng Xuechao
刊名：Marine Geology & Quaternary Geology
出版年：2012
卷期：32(1)
关键词：海洋沉积物 ; marine sediments ; 晚第四纪 ; Late Quaternary ; 南海 ; South China Sea
页码：p.77-84
图表：3 illus., 35 refs.
分类号：1400
出版序号：20130412
issnNo：ISSN0256-1492
isbnNo：CN37-1117/P

摘要

In order to understand the paleo-environmental evolution in the northern South China Sea (SCS) since the last interglacial, the compositions of C-O isotope, calcium carbonate, total organic carbon (TOC) and grain size for sediments in Core 83PC derived from the Xisha trough were investigated. The results showed that the δ¹⁸O and δ¹³C values of planktonic foraminifer exhibited significant glacial-interglacial cycles, controlled by the sea level fluctuation and climate change. And a rapid decrease in carbonate content during early-middle post-glacial period might be resulted from the changes in rainfall. Erosion would be intensified wile heaop rain, and the dilution effect to carbonate wap thus enhanced.