Igneous Rock in Iowa

Igneous rocks in the form of granite rocks are all over Iowa, however there are no active volcanoes or active plates. These changes and rocks have occured through deposits from glaciers as well as changing landscapes during the Earth’s history. 

How are igneous rocks like granite formed?

What other ways besides volcanoes could granite rocks move?

• Use this phenomena to help introduce the concept of using rocks to determine Earth’s history. The use of the sedimentary rock in Iowa would be helpful as well but the novelty of igneous rocks being in a place with a lack of volcanic action can spark some interests. 
• Use this phenomena as a way to introduce the rock cycle.

• Santa Fe College | The Rock Cycle: This shows the three types of rocks and the rock cycle.
• Geology.com | Rock identification: This is a simple chart that helps identify different types of rocks.
• State of Iowa: | Landform Regions of Iowa: Simple explanations and map of how the glacier shaped Iowa’s landscape.