1)dating of fossils,化石年代决定2)Date a fossil.,确定化石的年代3)fossil geochronometry,化石年代学4)age determination,年龄决定5)isobiolith,等化石年代岩石单位6)obsidian dating,黑曜石年代测定法
用法例句
The isotopic dating and fossil geochronometry are the basic methods of ophiolite geochronometry.
