Subject
Africa
4
geochemical cycle
4
geochemistry
4
geologic structure
4
geology
4
magmatism
4
orogenesis
4
petrochemistry
4
petrography
4
continental drift
2
evolution
2
geochemical migration
2
geochemical prospecting
2
geological mapping
2
geophysics
2
igneous rock
2
metamorphic rock
2
mineral deposit
2
ore mining
2
paleontology
2
rock forming mineral
2
rock mechanics
2
rock sample
2
tectonics
2
volcanism
2