南海ODP1143站底栖有孔虫Cibicidoides与Uvigerina稳定氧碳同位素值的均衡试验

田军; 汪品先; 成鑫荣

Volume 29 Issue 1

Jan. 2004

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Article Navigation > Earth Science > 2004 > 29(1): 1-6

TIAN Jun, WANG Pin-xian, CHENG Xin-rong, 2004. Stable Isotope Equilibrium Test between Benthic Foraminifer Cibicidoides and Uvigerina at ODP Site 1143, Southern South China Sea. Earth Science, 29(1): 1-6.

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Stable Isotope Equilibrium Test between Benthic Foraminifer Cibicidoides and Uvigerina at ODP Site 1143, Southern South China Sea

Laboratory of Marine Geology, Tongji U niversity, Shanghai 200092, China

Received Date: 2003-07-11
Publish Date: 2004-01-25

Abstract

Abstract

Stable oxygen and carbon isotope records from ODP Site 1143 (9°21.72′N, 113°17.11′E, 2 772 m) in the southern South China Sea (SCS) are presented for the benthic foraminifers Cibicidoides wuellerstorfi and Uvigerina peregerina in 64 samples. The results show that the average δ¹⁸O difference between Cibicidoides wuellerstorfi and Uvigerina peregerina of 64 samples at Site 1143 is (0.614±0.07)×10^-3, close to 0.64×10^-3 of the standard oxygen isotopic difference in the Atlantic and the east Pacific, whereas the average δ¹³C difference of these two species at Site 1143 is (0.692±0.04)×10^-3, much lighter than 0.9×10^-3 of the standard carbon isotopic difference in the Atlantic and the east Pacific. The lighter value of δ¹³C difference at Site 1143 may be caused by the low productivity in reef areas which had decreased the δ¹³C difference between the depositions and the sea water. This test at Site 1143 provides an adjustive standard of oxygen and carbon isotope values between benthic foraminiferal Cibicidoides wuel-lerstorfi and Uvigerina peregerina for the paleoceanographic study in the South China Sea and even in the west Pacific.
- South China Sea,
- ODP Site 1143,
- benthic foraminifer,
- isotope

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References(10)

References

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