| Abstract: | Lacustrine deposits exposed around Lake Aricota, Peru (17?? 22???S), a 7.5-km2 lake dammed by debris flows, provide a middle to late Holocene record of lake-level fluctuations. Chronological context for shoreline deposits was obtained from radiocarbon dating of vascular plant remains and other datable material with minimal 14C reservoir effects (<350 yr). Diatomites associated with highstands several meters above the modern lake level indicate wet episodes. Maximum Holocene lake level was attained before 6100 14C yr B.P. and ended ???2700 14C yr B.P. Moderately high lake levels occurred at 1700 and 1300 14C yr B.P. The highstand at Lake Aricota during the middle Holocene is coeval with a major lowstand at Lake Titicaca (16?? S), which is only 130 km to the northeast and shares a similar climatology. Comparisons with other marine and terrestrial records highlight emerging contradictions over the nature of mid-Holocene climate in the central Andes. ?? 2001 University of Washington. |
| Genre: | Article |
| ProdID: | 70023392 |
| Citation Author: | Placzek, C.; Quade, J.; Betancourt, J. L. |
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| Citation End Page: | 190 |
| Citation Issue: | 2 |
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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: | Holocene lake-level fluctuations of Lake Aricota, Southern Peru; 2001; Article; Journal; Quaternary Research; Placzek, C.; Quade, J.; Betancourt, J. L. |
| Citation Start Page: | 181 |
| Citation Volume: | 56 |
| Citation Year: | 2001 |
| Type: | citation/reference |
| Text: | Holocene lake-level fluctuations of Lake Aricota, Southern Peru; 2001; Article; Journal; Quaternary Research; Placzek, C.; Quade, J.; Betancourt, J. L. |
| URL (THUMBNAIL): | http://pubs.er.usgs.gov/thumbnails/outside_thumb.jpg |
| URL (DIGITAL OBJECT IDENTIFIER): | http://dx.doi.org/10.1006/qres.2001.2263 |
| Date Other: | Mon, 1 Jan 2001 00:00 -0600 |
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