ClipArt ETC
"Ideal section of part of the earth's crust, with landscape above. Granite and other crystalline rocks appear with irregular outlines at the bottom of the section; over them are stratified rocks, partly bent and partly flat. The forms of the landscape are related to the arrangement of the rocks." -Gilbert, 1910

Stratified Layers

"Ideal section of part of the earth's crust, with landscape above. Granite and other crystalline rocks…