The crust the mantle and the core

Discovery Science: Earth – Water – Oceanic Crust

by

Earth Science: Earth – Water – Oceanic Crust Oceanic crust covers two-thirds of the Earth’s surface. Crustal rocks are relatively recent, with none older than 200 million years, and they are constantly in motion. This movement expands the oceans and shifts entire continents. The oceanic crust begins beyond the flooded part of the continental shelf. … Read more

Earth: Origins and Geology – The Core and Mantle Of The Earth

by

Earth Science: The Core and Mantle Of The Earth The interior of the Earth long presented an enormous puzzle to science. Seismic measurements helped to start unraveling the mystery and assisted the exploration of the structure and contours of the Earth’s interior. The interior of the Earth is separated into three chemically distinct parts: the … Read more