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本文报道了台湾海峡西部海域MD756岩心晚更新世沉积物内有孔虫Neogloboqudrina.dutertrei(d’Orbigny)的碳氧同位素记录。整个岩心的同位素变化幅度,对氧约为1.1‰,对碳约为1.3‰。同位素古温度最高27.5℃,氧同位素期为第1阶,相当于冰后期;最低22.2℃,氧同位素期为第2阶,相当于晚武木冰期。全新世前期平均温度为26.1℃,比晚更新世晚期平均温度(24.2℃)高出1.9℃,这与由孢粉组合反映的晚武木冰期温凉略干、冰后期暖热潮湿的气候特点是一致的。
This paper reports the carbon and oxygen isotope records of the foraminifer Neogloboqudrina. Dutertrei (d’Orbigny) in the sediments of MD756 core in the western Taiwan Strait. The isotopic variation of the entire core is about 1.1 ‰ for oxygen and about 1.3 ‰ for carbon. The palaeo-paleozoic temperature is 27.5 ℃, the oxygen isotopic period is the first order, equivalent to the late ice period, the lowest is 22.2 ℃ and the oxygen isotope stage is the second order, which is equivalent to the Late Wuwu Ice Age. The average temperature in the early Holocene was 26.1 ℃, 1.9 ℃ higher than the late average temperature in the late Pleistocene (24.2 ℃), which was slightly higher than that of the late Wuwu ice age Warm and humid climate characteristics are the same.