Geological history of the EarthThree basic rock types: a) Igneous rocks
b) Metamorphic rocks
c) Sedimentary rocks
Basalt & granite
Sedimentary rocks
Fossils in sedimentary rocks
Geological ages
Biological time scales
Other time scales 1
Other time scales 2
Radiometric dating
Decay of radioactive isotopes
Biogeo time scales
Age of earth
Hydrosphere: 4.3 Gyr
Formation of earth
Formation of the moon
Interior heating
Moon’s interior has cooled off due to its small size.
Outgassing of earth atmosphere
lithosphere
Plate tectonics
San andreas fault
Seismic waves
Plate boundary