Lower to middle Eocene astronomically-tuned Ca/Fe-ratios and bulk stable isot...

The geologic time scale for the Cenozoic Era has been notably improved over the last decades by virtue of integrated stratigraphy, combining high-resolution astrochronologies,...新生代（Cenozoic Era）地质年代表在近数十年来借助综合地层学方法、结合高分辨率天文年代序列等手段得到了显著改进。