法国全国宇宙科学研究所在1976年7月18日宣布,一个研究小组用放射性元素年代测定方法精确测出大溪地岛珊瑚的年代后,发现在距今2万至6000年之间最后一次冰消期内,大陆冰帽融化导致地球海平面升高120米。 珊瑚是各地质期海平面的最佳标记,因为某些珊瑚生长在海平面以下几米的浅海层,随着海平面的升高,这类珊瑚逐渐向上生长,尽量接近海平面,而原有的珊瑚则变为碳酸盐骨架。法国研究人员在珊瑚上钻井取出经历过冰消期 On July 18, 1976, the French National Institute of Astrophysics announced that a research team had accurately measured the age of the Tahiti island coral by radioactive element dating and found that the last ice between 20,000 and 6,000 years ago During the period of elimination, the melting of the ice caps in the mainland led to a 120-meter elevation of the Earth’s sea level. Coral is the best mark of sea-level for all geologic periods because some corals grow in shallow-water formations a few meters below sea level, and as the sea level rises, these coral grows upwards as close to sea level as possible, Corals then become carbonate skeletons. French researchers drilling out of corals and experiencing ice depletion