Evaluation of Aqueous Gastropod Shells as Groundwater Radiocarbon Proxies Across Species and Sites
Bibliographic Data
| ID | 9243004 |
|---|---|
| Authors | J C Lerback (0000-0003-1615-3530), S Bagge, B B Bowen |
| Year | 2023 |
| Volume | 65 |
| Issue | 2 |
| Pages | 443-462 |
| Publication date | 2023-04-01 |
| Open Access | Yes |
| Type | ARTICLE |
| Venue | Radiocarbon (JOURNAL) |
| Journal identifiers | ISSN: 0033-8222 • E-ISSN: 1945-5755 |
| Publisher | Cambridge University Press (CUP) (PUBLISHER) |
| DOI | 10.1017/rdc.2022.103 |
| OpenAlex | W4317907968 |
| Language | EN |
| References cited | 62 |
We evaluate carbonate gastropod shells as 14 C proxies for groundwater discharge at springs. Groundwater 14 C is commonly used to estimate groundwater transit times, and a carbonate shell proxy would present a different way of collecting groundwater 14 C data. Specifically, we test the hypothesis that in exclusively groundwater-fed spring systems, water 14 C is preserved in carbonate shells at multiple sites, species, and water 14 C. We first present isotopic and water temperature variability over several years at three spring sites in Utah. We then compare the 14 C of contemporaneously collected water, sediment, and shells of benthic gastropods ( Melanoides tuberculata , Pyrgulopsis pilsbryana , and Physella gyrina ). We show that water and shell 14 C activities at each site are correlated (slope = 1.00, R 2 = 0.999, n = 22). These results support the hypothesis that 14 C from groundwater is preserved in carbonate shells, and that aqueous gastropods a viable groundwater 14 C proxy. Finally, we describe the utility and limitations of using gastropod shells as a groundwater 14 C proxy
Benthic zone · Carbonate · Groundwater · Radiocarbon dating · Aquatic Invertebrate Ecology and Behavior · Chemistry · Environmental Science · Geology and Paleoclimatology Research · Isotope Analysis in Ecology · Geology · Oceanography · Paleontology
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On Correcting 14 C Ages of Gastropod Shell Carbonate for Fractionation
| Highly cited | No |
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