Rockology 101

Welcome to class! This is a place for students of all ages to learn about Rogers Group operations and products or just have a little fun!

Rockology 101: Learning
Bet You Didn't Know
How Aggregates Are Made
How Aggregates Are Transported
How Aggregates Impact Your Life
Why Quarries Are Good Neighbors
The Mining Process
The Open Road
Sand, It's Not Just For Beaches
Farmers Like a Twist of Aglime
Modern Life and The Rock
Properties of Rocks
Rockology 101: Fun Facts
Rockology 101: Activities

Properties of Rocks


rock which was formed out of soil, silt, sand, seashells, bits of pieces of everything. The tiny bits settled and built up in thick layers. Minerals from water seeped into the spaces between the particles and bonded them into solid rock. The Grand Canyon is made up of sandstone, limestone, and shale which are all sedimentary rocks.


Sedimentary Rock




(means to "change")

rock used to be igneous or sedimentary rock that was changed by heat or pressure or both. The Appalachian Mountains including the Blue Ridge are mainly metamorphic rock with a little igneous rock.


Metamorphic Rock

 rockline    Igneous

(means "fire")

igneous rock was once hot liquid inside the earth. Rock that erupted from volcanoes and cooled on the surface is called extrusive igneous rock. Igneous rock that cooled more slowly inside the Earth is called intrusive. Apache Tear and the Hawaiian Islands are mainly igneous rock.


Igneous Rock