paleogeography

Short definition from Wiktionary

Noun

1. 1
   The study of historical geography — of the (chiefly physical, but sometimes political/cultural) geography of the world in the geologic past.
2. 2
   The study of historical geography — of the (chiefly physical, but sometimes political/cultural) geography of the world in the geologic past: Synonym of paleogeomorphology The study of the physical geography from the past; no political or cultural history