Orogeny

thumb|Map of the last orogenies to affect Earth's geologic provinces

mountains formed by compressive crumpling of the layers of rock

massive volcanic formation resulting from flood basalt eruptions

result of a very large volume eruption of basalt lava

geological processes that underlie the formation of mountains

zone affected by mountain formation

Area of folding and faulting adjacent to a mountain belt

process occurring when lower continental crust and mantle lithosphere break away from the upper continental crust

seabed ridge south of Greece