My father almost became a geologist, so clearly I have a lot of expertise to be writing on this topic. I practically hold the degree. There’s two types of rock, at the end of the day.
Sedimentary rock is almost always derivative of other rocks. Igneous rocks like granite are broken down into small pieces, transported downstream to the sea, where they form sediment beds and then under immense pressure from all that weight, it turns into rock. These sedimentary rocks are made out of particles of other rocks – so they are a patchwork of other identities.
The other type of rock is igneous, made from a volcanic eruption, lava spewing and spilling out, and cooling to become rock. Igneous rock forms from molten rock, so picture a 1500-2000F degree, sudden, violent explosion…. it’s a fiery way to be born. Continue reading God is the Great Igneous Rock Maker