Iowa Geology Across Space and Time

This video highlights Boneyard Hollow in Dolliver Memorial State Park and its amazing geologic layers, and then compares it to the same layers currently forming on the banks of Saylorville Reservoir.

Video

Webster County

Iowa Core Standard

HS-ESS2-1

Develop a model to illustrate how Earth's internal and surface processes operate at different spatial and temporal scales to form continental and ocean-floor features.

Driving Question

How are we able to learn about ancient geologic processes?

Probing Questions

How are the geologic principles playing out in Boneyard Hollow?

Classroom Suggestions

Students could:

Research the geologic processes causing the changes at both locations.
Compare and contrast how the Earth's internal and external processes work to shape the landscapes.

Resources

Michigan Technological University | Crossbedding: Reading the Rock:: Excellent information on the geologic process of crossbedding.
Iowa Geological Survey (IGS) | Landforms of Iowa: A great resource for learning about Iowa's geological past and landform regions.
Iowa State University Extension: Landforms and Geology - Iowa's Nature Series: A free PDF booklet detailing Iowa geology, fossils and landforms.

Contributors

Submitted by Ryan Lensing.