Rocks from the continental crust main content.

Rocks from the continental crust

Photo of the wall text in the Hall of Planet Earth about rocks from the continental crust AMNH/R.Mickens

Exhibition Text

Continental crust is significantly thicker than oceanic crust. It stands higher and penetrates deeper into the mantle than its oceanic counterpart. The upper continental crust is exposed at many places, and its composition is well known. The lower continental crust is not exposed; geologists learn about it by studying how shock waves from earthquakes and man-made explosions pass through it, and by examining the rare fragments carried to the surface by erupting lavas. 

For Educators

Topic: Earth Sciences

Subtopic: Earth Structure

Keywords: Continental crust, Geology, Earth (Planet)--Crust, Rocks, Earthquakes

Audience: General