Plate Tectonics. What is Plate Tectonics? According to the plate tectonics theory, the uppermost mantle, along with the overlying crust, behaves as a.
EARTH… What lies beneath. WHAT LIES BENEATH… CRUST: Top layer of Earth’s internal structure that has two parts… 1.Basalt-rich oceanic crust 2.Granite-rich.
8. Ocean Crustal Structure and Seismic Reflection William Wilcock (via Michelle W.) OCEAN/ESS 410.
1 Plate Tectonics. 2 Earth’s crust is cracked and fragmented –Fragments called plates The Earth’s mantle is very hot and fluid, so the plates move atop.
