(To the melody of “Rock This Town.” Words by Bob Swanson – music by The Stray Cats)

Now igneous rocks come from magma when it’s cooling down
Intrusive cool within the Earth, extrusive cool without
Igneous make up most of the crust of the planet
But if you pick up a rock, you can’t take it for granite
Petrography helps rock hounds sort them out

(refrain)
Geology rocks – shout it for all to hear
Geology rocks – let me be crystal clear
Rocks unlock Earth’s history and mineralogical mysteries
Geology rocks – unearth a story with me

Metamorphic rocks start out as other types
Squeeze and heat some shale, now wouldn’t that be gneiss (with a G)
The pressure in the Earth acts like a vice
Minerals start to recrystallize
Make metamorphic grades of low, medium and high

(refrain)

Wind and water wear down rocks over centuries
Compaction and cementation follow weathering
Sedimentary rocks are just fantastic
Whether chemical, biogenic and clastic
And if you’re looking for fossils, sedimentary is what you need

(refrain)

Igneous, metamorphic, sedimentary (4x)
Geology rocks – unearth a story with me!