| Abstract: | A late Quaternary ichthyofauna from Homestead Cave, Utah, provides a new source of information on lake history in the Bonneville basin. The fish, represented by 11 freshwater species, were accumulated between ~11,200 and ~1000 14C yr B.P. by scavenging owls. The 87Sr/86Sr ratio of Lake Bonneville varied with its elevation; 87Sr/86Sr values of fish from the lowest stratum of the cave suggest they grew in a lake near the terminal Pleistocene Gilbert shoreline. In the lowest deposits, a decrease in fish size and an increase in species tolerant of higher salinities or temperatures suggest multiple die-offs associated with declining lake levels. An initial, catastrophic, post-Provo die-off occurred at 11,300-11,200 14C yr B.P. and was followed by at least one rebound or recolonization of fish populations, but fish were gone from Lake Bonneville sometime before ~10,400 14C yr B.P. This evidence is inconsistent with previous inferences of a near desiccation of Lake Bonneville between 13,000 and 12,000 14C yr B.P. Peaks in Gila atraria frequencies in the upper strata suggest the Great Salt Lake had highstands at ~3400 and ~1000 14C yr B.P. (C) 2000 University of Washington. |
| Genre: | Article |
| ProdID: | 70022201 |
| Citation Author: | Broughton, J. M.; Madsen, D. B.; Quade, J. |
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| Citation End Page: | 401 |
| Citation Issue: | 3 |
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| Citation Language: | English |
| Citation Larger Work Title: | Quaternary Research |
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| Citation Number Of Pages: | 10 |
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| Citation Search Results Text: | Fish remains from Homestead Cave and lake levels of the past 13,000 years in the Bonneville basin; 2000; Article; Journal; Quaternary Research; Broughton, J. M.; Madsen, D. B.; Quade, J. |
| Citation Start Page: | 392 |
| Citation Volume: | 53 |
| Citation Year: | 2000 |
| Type: | citation/reference |
| Text: | Fish remains from Homestead Cave and lake levels of the past 13,000 years in the Bonneville basin; 2000; Article; Journal; Quaternary Research; Broughton, J. M.; Madsen, D. B.; Quade, J. |
| URL (THUMBNAIL): | http://pubs.er.usgs.gov/thumbnails/outside_thumb.jpg |
| URL (DIGITAL OBJECT IDENTIFIER): | http://dx.doi.org/10.1006/qres.2000.2133 |
| Date Other: | Sat, 1 Jan 2000 00:00 -0600 |
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