| Abstract: | Mollusk shells provide brief (<5 yr per shell) records of past marine conditions, including marine radiocarbon reservoir age (R) and upwelling. We report 21 14C ages and R calculations on small (~2 mg) samples from 2 Mesodesma donacium (surf clam) shells. These shells were excavated from a semi-subterranean house floor stratum 14C dated to 7625 ?? 35 BP at site QJ-280, Quebrada Jaguay, southern Peru. The ranges in marine 14C ages (and thus R) from the 2 shells are 530 and 170 14C yr; R from individual aragonite samples spans 130 ?? 60 to 730 ?? 170 14C yr. This intrashell 14C variability suggests that 14C dating of small (time-slice much less than 1 yr) marine samples from a variable-R (i.e. variable-upwelling) environment may introduce centuries of chronometric uncertainty. ?? 2010 by the Arizona Board of Regents on behalf of the University of Arizona. |
| Genre: | Article |
| ProdID: | 70037351 |
| Citation Author: | Jones, K. B.; Hodgins, G. W. L.; Etayo-Cadavid, M. F.; Andrus, C. F. T.; Sandweiss, D. H. |
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| Citation End Page: | 1214 |
| Citation Issue: | 3 |
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| Citation Language: | English |
| Citation Larger Work Title: | Radiocarbon |
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| Citation Number Of Pages: | 8 |
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| Citation Search Results Text: | Centuries of marine radiocarbon reservoir age variation within archaeological Mesodesma Donacium shells from Southern Peru; 2010; Article; Journal; Radiocarbon; Jones, K. B.; Hodgins, G. W. L.; Etayo-Cadavid, M. F.; Andrus, C. F. T.; Sandweiss, D. H. |
| Citation Start Page: | 1207 |
| Citation Volume: | 52 |
| Citation Year: | 2010 |
| Type: | citation/reference |
| Text: | Centuries of marine radiocarbon reservoir age variation within archaeological Mesodesma Donacium shells from Southern Peru; 2010; Article; Journal; Radiocarbon; Jones, K. B.; Hodgins, G. W. L.; Etayo-Cadavid, M. F.; Andrus, C. F. T.; Sandweiss, D. H. |
| URL (THUMBNAIL): | http://pubs.er.usgs.gov/thumbnails/outside_thumb.jpg |
| Date Other: | Fri, 1 Jan 2010 00:00 -0600 |
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