Dissolved Organic and Inorganic 14 C Concentrations and Ages for Coastal Plain Aquifers in Southern Maryland
Bibliographic Data
| ID | 9243323 |
|---|---|
| Authors | C B Purdy, G S Burr, Meyer Rubin, G R Helz, A C Mignerey |
| Year | 1992 |
| Volume | 34 |
| Issue | 3 |
| Pages | 654-663 |
| Publication date | 1992-01-01 |
| 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/s0033822200063943 |
| OpenAlex | W2555877797 |
| Language | EN |
| Citations received | 3 |
| References cited | 19 |
The Aquia (Paleocene) and Magothy (Late Cretaceous) Formations of the Atlantic Coastal Plain represent two well-characterized (hydrodynamically and geochemically) aquifers in southern Maryland. 14 C measurements of the dissolved organic (DOC) and inorganic carbon (DIC) of Aquia and Magothy groundwaters have been made using accelerator mass spectrometry (AMS). Both DI 14 C and DO 14 C concentrations in the initial flow path are unexpectedly low. As the water progresses farther from the recharge area, the DI 14 C percent modern carbon (pMC) is consistently lower than the DO 14 C pMC; this difference stays constant for all samples. The 14 C-derived ages for an Aquia water sample downgradient at Site 4 are 17 ka and 12 ka for DI 14 C and DO 14 C, respectively. Radiocarbon ages have been compared to ages determined by two other independent dating methods: computer-simulated hydrodynamic modeling and age estimates based on changes in Cl − , 18 O and 2 H distributions, which are interpreted to be influenced by sea level and climate
Absolute dating · Accelerator mass spectrometry · Aquifer · Coastal plain · Cretaceous · Dissolved organic carbon · Geochemistry · Groundwater · Groundwater recharge · Organic matter · Quaternary · Radiocarbon dating · Stable isotope ratio · Total organic carbon · Chemistry · Geology and Paleoclimatology Research · Groundwater and Isotope Geochemistry · Hydrocarbon exploration and reservoir analysis · Environmental Chemistry · Geology · Oceanography · Paleontology
| Citations per year | 0.12 |
|---|---|
| Citation span | 2001 - 2022 (22) |
| Highly cited | No |