(sphere of a rock)crust and uppermost mantle, rigid shell, 100-250 km in thickness, thick below continent.
estimates the amount of energy released at the housece of the earthquake
based on the amplitude of the largest seismic wave recorded
very large, gently sloping mound composed mainly of basaltic lava flows
asthenosphere is located
was an ancient reptile that lived in South America and Africa during the late Paleozoic.
a strike-slip fault that forms the boundary between tectonic plates
Early results of the Deep Sea Drilling Project clearly justified the conclusion that
the ocean basins are relatively young; most ocean basin rocks and sediments are Cretaceous or younger in age
On a typical seismogram, ________ will show the highest amplitudes.
Spreading center volcanism most generally produces rocks which are
basaltic in composition