chap5&6 vocab 2

Created by samd2 

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lithosphere

(sphere of a rock)crust and uppermost mantle, rigid shell, 100-250 km in thickness, thick below continent.

magnitude

estimates the amount of energy released at the housece of the earthquake

richter scale

based on the amplitude of the largest seismic wave recorded

shield volcano

very large, gently sloping mound composed mainly of basaltic lava flows

asthenosphere is located

upper mantle

mesosouraus

was an ancient reptile that lived in South America and Africa during the late Paleozoic.

transform fault

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.

surface waves

Spreading center volcanism most generally produces rocks which are

basaltic in composition

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