aqua
aquifer
artesian
bedrock
bushes
clay
cross
crust
cut
development
dirt
earth
environment
flood
formation
geologic
geological
geology
grass
gravel
ground
ground water
groundwater
horizons
humus
illustration
isometric
landscape
layer
limestone
material
matter
natural
nature
organic
parent
pattern
plain
profile
reservoir
rise
rock
sand
sandstone
scheme
science
section
soil
soil layers
stone
stones
storage
structure
texture
topsoil
water
well