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dc.contributor.authorPurdy, C. B.
dc.contributor.authorBurr, G. S.
dc.contributor.authorRubin, Meyer
dc.contributor.authorHelz, G. R.
dc.contributor.authorMignerey, A. C.
dc.date.accessioned2021-02-11T20:32:59Z
dc.date.available2021-02-11T20:32:59Z
dc.date.issued1992-01-01
dc.identifier.citationPurdy, C. B., Burr, G. S., Rubin, M., Helz, G. R., & Mignerey, A. C. (1992). Dissolved organic and inorganic 14C concentrations and ages for coastal plain aquifers in southern Maryland. Radiocarbon, 34(3), 654-663.
dc.identifier.issn0033-8222
dc.identifier.doi10.1017/S0033822200063943
dc.identifier.urihttp://hdl.handle.net/10150/653288
dc.descriptionFrom the 14th International Radiocarbon Conference held in Tucson, AZ, May 20-24, 1991.
dc.description.abstractThe Aquia (Paleocene) and Magothy (Late Cretaceous) Formations of the Atlantic Coastal Plain represent two well-characterized (hydrodynamically and geochemically) aquifers in southern Maryland. 14C measurements of the dissolved organic (DOC) and inorganic carbon (DIC) of Aquia and Magothy groundwaters have been made using accelerator mass spectrometry (AMS). Both DI14C and DO14C concentrations in the initial flow path are unexpectedly low. As the water progresses farther from the recharge area, the DI14C percent modern carbon (pMC) is consistently lower than the DO14C pMC; this difference stays constant for all samples. The 14C-derived ages for an Aquia water sample downgradient at Site 4 are 17 ka and 12 ka for DI14C and DO14C, 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-,18O and 2H distributions, which are interpreted to be influenced by sea level and climate.
dc.language.isoen
dc.publisherDepartment of Geosciences, The University of Arizona
dc.relation.urlhttp://radiocarbon.webhost.uits.arizona.edu/
dc.rightsCopyright © by the Arizona Board of Regents on behalf of the University of Arizona. All rights reserved.
dc.rights.urihttp://rightsstatements.org/vocab/InC/1.0/
dc.titleDissolved Organic and Inorganic 14C Concentrations and Ages for Coastal Plain Aquifers
dc.typeProceedings
dc.typetext
dc.identifier.journalRadiocarbon
dc.description.noteThis material was digitized as part of a cooperative project between Radiocarbon and the University of Arizona Libraries.
dc.description.collectioninformationThe Radiocarbon archives are made available by Radiocarbon and the University of Arizona Libraries. Contact lbry-journals@email.arizona.edu for further information.
dc.eprint.versionFinal published version
dc.description.admin-noteMigrated from OJS platform February 2021
dc.source.volume34
dc.source.issue3
dc.source.beginpage654
dc.source.endpage663
refterms.dateFOA2021-02-11T20:32:59Z


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