IPA: /ˌfoʊtəʊˈdʒiːəʊlədʒi/
KK: /ˌfoʊtəʊˈdʒiːəʊlədʒi/
The study of geological features and formations using aerial photographs.
Photogeology helps scientists understand the Earth's surface and its geological history.
Photogeology → It is formed from "photo-" (from Greek "phōs", meaning light) and "geology" (from Greek "gē", meaning earth, and "logia", meaning study). The word refers to the study of the earth using light, particularly through photographs.
Think of 'light' ('photo-') being used to study the 'earth' ('geology') — that's what photogeology means.