Iowa releases map of state's bedrock

After more than four decades the state of Iowa is releasing an updated map of the state's bedrock geology.

The Iowa Department of Natural Resources says the map is available to help Iowans find out about what's in the earth below towns and farms. It was produced by the state's Geological and Water Survey and compiles available data from more than 125 years of student. It replaces the last statewide version dating to 1969.

The new version has renditions of the bedrock surface elevation and the depth to bedrock from the land's surface. Geologists say the information can help Iowans learn about groundwater and mineral resources, gauge geologic hazards, guide construction and protect water quality.

Downloads are available online or are $5 for printed copies.