1) Geology 2) Palaeogeology 1) Palaeo geology 
Paleogeology (also spelled palaeogeology) is the historical geological state of a particular area, or the study of the geologic history and origins of the earth, including such things as reconstructions of previous configurations of the Earth`s continents, the history and evolution of the Earth`s surface geological configuration, the formation a.....
the geology of a region at any given time in the distant past. Paleogeologic reconstructions in map form show not only the ancient topography of a ...
Paleogeology is the study of the Earth;s geologic conditions during ancient times. 
[n] - the study of geologic features once at the surface of the earth but now buried beneath rocks
palaeogeology noun the study of geologic features once at the surface of the earth but now buried beneath rocks