(2008) RAGBRAI Learn about the Land; Day 4, July 2008. Natural Resources, Department of
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2008day4.pdf File Size:1MB |
Abstract
Today’s ride departs Ames and heads towards Nevada. The Ames area is one of the classic areas to view elongated hummocks. These landforms are discontinous, lower relief curvilinear ridges which are east-west trending features. At one time geologists thought these hummocks formed at the base of the glacier due to glacial movement. It is now understood that these features may have developed within the glacier, in a large crevasse field that formed behind the ice (Bemis Moraine) margin as the ice stagnated and melted.
| Item Type: | Departmental Report |
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| Keywords: | RAGBRAI, DNR, Landscape |
| Subjects: | State government > State agencies Recreation and tourism Land use, development, and construction > Land use planning |
| ID Code: | 6467 |
| Deposited By: | Margaret Barr |
| Deposited On: | 29 Jul 2008 18:50 |
| Last Modified: | 29 Jul 2008 18:50 |
| URI: | https://publications.iowa.gov/id/eprint/6467 |