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日本湖泊新近的沉积土层样本,为物品的年代测定提供了可以追溯到5万年前、更为准确的时间标准轴。碳时钟正在重新校准。从日本湖泊得到的气候记录旨在用于提高年代测定技术的准确度,而这将有助于解开考古界的各种谜团——例如尼安德特人为何会遭遇灭绝。碳素断代法一直被用来测定有机物质的年代——实际上,是用来测定所有生命体的年代。这项技术的关键是放射性同位素碳-14。有别于其他碳的同位素,碳-14更为稳定,以固定不变的速度衰变。活着的生物体从大气层吸收的碳-
The newly deposited sediment samples from Japanese lakes provide a more accurate standard axis of time dating back 50,000 years, for the dating of items. The carbon clock is recalibrating. Climate records from Japanese lakes are designed to improve the accuracy of dating techniques, which will help unlock the mysteries of the archeology community - why, for example, the Neanderthal extinction. Carbon dating has long been used to determine the age of organic matter - in fact, the age of all living beings. The key to this technology is the radioisotope carbon-14. Unlike other carbon isotopes, carbon-14 is more stable and decays at a constant rate. Living organisms absorb carbon from the atmosphere -