作为地球气候变化的指标,同位素记录有两个优势。
Thus, more of the heavy isotope is left behind in the ocean and absorbed by marine organisms.因此,更多的重氧同位素留在了海洋里,并被海洋有机物吸收。
Almost all the oxygen in water is oxygen 16, but a few molecules out of every thousand incorporate the heavier isotope 18.水中几乎所有的氧都是氧16,但每一千个分子中就有几个含有较重的同位素18。