Page 32
temperatures were about eight to 10�F cooler than interglacial times. Although during earlier times glaciers had moved even farther south, ice sheets extended as far south as the present Missouri River valley during the last of the major glacial incursions. This was called the Wisconsinan glaciation...
| Language: | unknown |
|---|---|
| Subjects: | |
| Online Access: | http://cdm16921.contentdm.oclc.org/cdm/ref/collection/ndbb/id/13441 |