geochronology

例句：

1. 1. The study of the earth's history is a fundamental part of geological chronology.
   研究地球历史是地质年代学的基本部分。
2. 2. Paleontologists use radiometric dating methods to reconstruct past ecosystems.
   古生物学家使用放射性测年方法来重建过去生态系统。
3. 3.The geochronology of the meteorite has been used to date its origin.
   陨石的地质年代学已被用来测定其起源。