Igneous Rock in Iowa
Igneous rocks in the form of granite rocks are all over Iowa, but with no active volcanoes or active plates how did they get here? Through deposits from glaciers as well as changing landscapes during the Earth’s history.
Possible Guiding, Compelling and/or Anchoring Questions
- 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.
- The Rock Cycle Santa Fe College: 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.
- Iowa PBS: Iowa Land and Sky: Des Moines Lobe: Iowa PBS take on the Des Moines Lobe.
- Wisconsinian Glacier and the Des Moines Lobe: Simple explanation of how the glacier changed Iowa’s landscape.
Iowa Core Alignment
Submitted by Scott Connolly