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本文报导采自中国东部喀斯特地区128个洞穴沉积物的~(230)Th/~(234)U年代测定结果。最年轻年龄为4300年,最老年龄大于35万年。中国东部洞穴沉积物有三个发育时期,它们是距今4000—13,000年,35,000—60,000年和75,000—12万年;也有两个不发育期,是距今15,000—35,000年和65,000—75,000年。这五个时期分别与V_(28-239)深海岩心同位素记录的第一、第三、第五暖期和第二、第四冷期相对应.
This paper reports the results of ~ (230) Th / ~ (234) U dating from 128 cave deposits in the karst area of eastern China. The youngest is 4300 years, the oldest is more than 350,000 years old. Cave sediments in eastern China have three developmental stages, which are 4000-13,000 years, 35,000-60,000 years, and 75,000-12,000 years ago; there are also two unexploited stages dating from 15,000 to 35,000 years ago and 65,000 to 75,000 years ago. These five periods correspond to the first, third and fifth warm periods and the second and fourth cold periods of the V_ (28-239) deep-sea core isotope records, respectively.