| Abstract: | Sediments exposed at Epiguruk, a large cutbank on the Kobuk River about 170 km inland from Kotzebue Sound, record multiple episodes of glacial-age alluviation followed by interstadial downcutting and formation of paleosols. Vertebrate remains from Epiguruk include mammoth, bison, caribou, an equid, a canid, arctic ground squirrel, lemmings, and voles. Radiocarbon ages of bone validated by concordant ages of peat and wood span the interval between about 37,000 and 14,000 yr B.P. The late Pleistocene pollen record is dominated by Cyperaceae, with Artemisia, Salix, Betula, and Gramineae also generally abundant. The fossil record from Epiguruk indicates that the Kobuk River valley supported tundra vegetation with abundant riparian willows during middle and late Wisconsin time. Large herbivores were present during the height of late Wisconsin glaciation as well as during its waning stage and the preceding interstadial interval. The Kobuk River valley would have been a favorable refugium for plants, animals, and possibly humans throughout the last glaciation. |
| Genre: | Article |
| ProdID: | 70018365 |
| Citation Author: | Hamilton, T. D.; Ashley, G. M.; Reed, K. M.; Schweger, C. E. |
| Citation Contributing Office: | |
| Citation Datum: | |
| Citation Day: | |
| Citation Edition: | |
| Citation Editor: | |
| Citation End Page: | 389 |
| Citation Issue: | 3 |
| Citation Keywords: | |
| Citation Language: | English |
| Citation Larger Work Title: | Quaternary Research |
| Citation LatN: | |
| Citation LatS: | |
| Citation LonE: | |
| Citation LonW: | |
| Citation Month: | |
| Citation No Pagination: | |
| Citation Number Of Pages: | 9 |
| Citation Online Only Flag: | |
| Citation Phsyical Description: | |
| Citation Projection: | |
| Citation Public Comments: | |
| Citation Publisher: | |
| Citation Series: | |
| Citation Series Code: | |
| Citation Series Number: | |
| Citation Search Results Text: | Late Pleistocene Vertebrates and Other Fossils from Epiguruk, Northwestern Alaska; 1993; Article; Journal; Quaternary Research; Hamilton, T. D.; Ashley, G. M.; Reed, K. M.; Schweger, C. E. |
| Citation Start Page: | 381 |
| Citation Volume: | 39 |
| Citation Year: | 1993 |
| Type: | citation/reference |
| Text: | Late Pleistocene Vertebrates and Other Fossils from Epiguruk, Northwestern Alaska; 1993; Article; Journal; Quaternary Research; Hamilton, T. D.; Ashley, G. M.; Reed, K. M.; Schweger, C. E. |
| URL (THUMBNAIL): | http://pubs.er.usgs.gov/thumbnails/outside_thumb.jpg |
| URL (DIGITAL OBJECT IDENTIFIER): | http://dx.doi.org/10.1006/qres.1993.1045 |
| Date Other: | Fri, 1 Jan 1993 00:00 -0600 |
| Publisher: | |
