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 can start orienting in our backyards
EXTRA: