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All News and Pages Related to "glacial erratics"

Erratics: Glacial Boulders in Iowa

Posted on August 13th, 2014

by Raymond R. Anderson and Jean Cutler Prior “Peculiar,” “irregular,” and “uncommon,” are words used to describe one class of Iowa rocks — glacial boulders or “erratics.” Geologists define erratics as stones or boulders that have been carried from their place of origin by a glacier and then left stranded by melting ice on bedrock […]

Stephanie Surine

Posted on July 30th, 2014

Geologist, STATEMAP Program Coordinator, Iowa Geological Survey Office: 340B Trowbridge Hall Phone Number: 319-335-3679 E-mail: Education:  M.S. Geoscience, University of Massachusetts; B.S. Geology, Grand Valley State University IGS Program Involvement: Lead Quaternary mapper and STATEMAP Program Coordinator. Researches and conducts field investigations on the Quaternary deposits and stratigraphy of Iowa, with a primary focus […]


Posted on April 30th, 2014

Have a question about Iowa geology? Here are some answers to frequently asked questions.  Are there dinosaur fossils in Iowa? What are the fossils of Iowa? Are there any meteorites in Iowa? What are geodes and how do they form? What are those strange boulders in fields? What is the midcontinental rift? When did oceans […]

General Geology

Posted on April 30th, 2014

Mineral, Rock, and Fossil Identification Geologists at the Iowa Geological Survey regularly identify rocks, minerals, and fossils that are brought into our office.  If you are not able to stop by our office, send photos of the specimen via email.  Please make sure that the photos capture all aspects of the specimen, are in focus, […]