南海北部BY1钻孔沉积物元素地球化学特征及其古环境意义

doi:10.11978/j.issn.1009-5470.2012.05.002

Abstract

Abstract: Sediment of Core BY1 from the northern South China Sea was measured for its major and minor element compositions. The results show that CaCO₃ content follows the “Atlantic cyclicities” pattern: lower during glacial stages and higher during interglacial stages, whereas the variations of SiO₂, Al₂O₃, Fe₂O₃, MgO, K₂O, TiO₂ are reversed. Ti-normalized ratios of most elements are higher during interglacials and lower during glacials, reflecting stronger chemical weathering in interglacials than in glacials and warm and wet climate in the source area. This may be the result of an enhanced East Asian summer monsoon.

Key words: element geochemistry, chemical weathering, paleoenvironment, northern South China Sea

CLC Number:

P736.2

LIU Jian,LU Hong-feng,SU Xin,CHEN Fang,CHEN Dao-hua,CHENG Si-hai. Element geochemistry of Core BY1 from the northern South China Sea and its paleoenvironmental implication[J].Journal of Tropical Oceanography, 2012, 31(5): 6-11.

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Element geochemistry of Core BY1 from the northern South China Sea and its paleoenvironmental implication

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