Geologic Time Line October 19, 2010. EonEraPeriodEpochOld Periods Phanerozoic Eon 543 mya to Present Cenozoic Era Cenozoic Era 65 mya to Present Neogene.
The World as it Turns Changes in the Earth’s Crust…Plate Tectonics.
Mining. Mining Minerals are naturally occurring substances found in rocks, soils, or sediments. Minerals deposits that can be mined profitably are called.
ASTROPHYSICS UNIVERSE. Know locations The Solar System.
