palaeogeology
/ˌpalɪəʊdʒɪˈɒlədʒi/ /ˌpeɪlɪəʊdʒɪˈɒlədʒi/noun
The study or reconstruction of the geological features of an area at some time in the past; such features themselves.
Origin
1930s; earliest use found in Bulletin of the American Association of Petroleum Geologists. From palaeo- + geology.