- avalanche
- axis
- catchment area
- crater
- dinosaur
- divide
- earth
- element
- extinct
- gallery
- geo-
- geophysics
- glacial
- glaciation
- goldfield
- landslide
- landslip
- leach
- magnetic pole
- magnitude
- mantle
- meteorite
- molten
- mother lode
- natural history
- onyx
- opal
- ozone layer
- paleontology
- pitchblende
- Pleistocene
- Pliocene
- primeval
- quake
- quake
- rarefied
- rock
- scour
- shock wave
- slide
- soapstone
- stony
- stream
- strip mine
- subcontinent
- subterranean
- superficial
- terrain
- terrestrial
- tremor
- undercurrent
- volcanic
- volcano
- vortex
- water table
