Andrew Gurry

The Three Types of Rocks Explained Simply Rocks may look simple, but they have amazing stories. Some rocks were once melted lava.Some were once sand, mud, or shells.Some were changed deep underground by heat and pressure. In geology, most rocks fit into three main groups: Igneous rocksSedimentary rocksMetamorphic rocks Those names sound complicated, but the […]

Rocks vs. Minerals vs. Crystals: What’s the Difference? When you first start learning geology, three words come up a lot: Rocks.Minerals.Crystals. A lot of people use these words like they mean the same thing, but they are actually different. They are connected, though. That is what makes it confusing at first. The good news is

Kartchner Caverns State Park: A Family Trip That Made Geology Come Alive Sometimes the best way to learn science is not from a book, a video, or a classroom. Sometimes you need to walk underground. That is exactly what my wife, my 12-year-old son, and I did when we visited Kartchner Caverns State Park in

What Is a Rock? Have you ever picked up a rock and wondered, “What is this thing?” Maybe it was shiny.Maybe it had stripes.Maybe it was red, black, white, green, or full of little sparkles. Rocks are everywhere. They are in mountains, deserts, rivers, roads, buildings, walls, sidewalks, and even jewelry. But most people walk

Curious About Geology? Geology is the study of Earth. That means geology helps us understand rocks, minerals, mountains, volcanoes, earthquakes, fossils, caves, canyons, and even the dirt under our feet. At first, geology can seem like a big subject. There are a lot of strange words, old rocks, and huge time periods. But we are