BACKYARD GEOLOGY (FIVE STEPS from outer space to our BACKYARDS) STEP 1: Stars produce most chemical elements STEP 2:  Chemical elements combine to form minerals STEP 3:    Minerals combine to form rocks

igneous rocks | metamorphic rocks | sedimentary rocks

STEP 4: Rocks are altered by geological processes

Ice Ages & glaciers | continental drift | gravel | fossils

STEP 5: We find evidence of all this in our backyards

Generalized Geology Map of the USA | The Geological Time Scale

FUN BROWSING:

Jim's Geological Field Notes | Excerpts from the Journal of Geology

BOOKS AT AMAZON.COM:

general geology | rocks & minerals | fossils