第二段最后一句说The higher the ratio of oxgen 18 to oxgen 16 in a sedimentary specimen, the more land ice there was when the sediment was laid down 怎么理解? 前面不是说蒸发的水return到了continental ice sheets 里面嘛,那不是应该是陆地里的oxgen 18比较少吗?纠结~~
神人啊,我还觉得是文章错了,应该是the less land ice there was…………,因为水蒸发,18/16 ratio高,说明不是Ice age!看来概念混了,continental ice sheets grow和land ice
The higher the ratioofoxygen18tooxygen16in a sedimentaryspecimen, the more landicethere was when the sediment was laid down. 沉积物标本中氧18对氧16的比例越高,沉积物形成时的陆地冰就越多。