Persistent Link:
http://hdl.handle.net/10150/191734
Title:
Possible subsurface production of carbon-14 in ground water
Author:
Alweis, Sophie Joan.
Issue Date:
1981
Publisher:
The University of Arizona.
Rights:
Copyright © is held by the author. Digital access to this material is made possible by the University Libraries, University of Arizona. Further transmission, reproduction or presentation (such as public display or performance) of protected items is prohibited except with permission of the author.
Abstract:
Theoretical mechanisms for the production o1f4 C .in ground water by activation of 14N, 170, and 13C by emissions from uranium and thorium nuclei have been proposed. These mechanisms were investigated in laboratory and field settings to determine applicability in the natural environment and the extent to which error may be introduced in a ¹⁴C date due to in situ ¹⁴C production. Laboratory experiments demonstrated that calculated and measured ¹⁴C production in irradiated samples of ammonium nitrate solution and distilled water agreed within an order of magnitude. The methane and carbon dioxide fractions of a natural gas with a high nitrogen content were ¹⁴C dated. The methane contained no ¹⁴C, but due to analytical difficulties, the ¹⁴C activity of the carbon dioxide could not be accurately ascertained. These investigations indicate that in situ ¹⁴C production will not influence ¹⁴C dating of ground water except under unique circumstances. Only if the source rock is highly enriched in uranium and the sample of water or gas from the source rock has a high concentration of nitrogen may in situ production of ¹⁴C produce an error in a ¹⁴C date if the ¹⁴C dating range is not extended beyond 50,000 BP.
Type:
Thesis-Reproduction (electronic); text
LCSH Subjects:
Hydrology.; Groundwater -- Arizona.; Carbon -- Isotopes.; Water -- Composition.
Degree Name:
M.S.
Degree Level:
masters
Degree Program:
Hydrology and Water Resources; Graduate College
Degree Grantor:
University of Arizona
Committee Chair:
Davis, Stanley N.

Full metadata record

DC FieldValue Language
dc.language.isoenen_US
dc.titlePossible subsurface production of carbon-14 in ground wateren_US
dc.creatorAlweis, Sophie Joan.en_US
dc.contributor.authorAlweis, Sophie Joan.en_US
dc.date.issued1981en_US
dc.publisherThe University of Arizona.en_US
dc.rightsCopyright © is held by the author. Digital access to this material is made possible by the University Libraries, University of Arizona. Further transmission, reproduction or presentation (such as public display or performance) of protected items is prohibited except with permission of the author.en_US
dc.description.abstractTheoretical mechanisms for the production o1f4 C .in ground water by activation of 14N, 170, and 13C by emissions from uranium and thorium nuclei have been proposed. These mechanisms were investigated in laboratory and field settings to determine applicability in the natural environment and the extent to which error may be introduced in a ¹⁴C date due to in situ ¹⁴C production. Laboratory experiments demonstrated that calculated and measured ¹⁴C production in irradiated samples of ammonium nitrate solution and distilled water agreed within an order of magnitude. The methane and carbon dioxide fractions of a natural gas with a high nitrogen content were ¹⁴C dated. The methane contained no ¹⁴C, but due to analytical difficulties, the ¹⁴C activity of the carbon dioxide could not be accurately ascertained. These investigations indicate that in situ ¹⁴C production will not influence ¹⁴C dating of ground water except under unique circumstances. Only if the source rock is highly enriched in uranium and the sample of water or gas from the source rock has a high concentration of nitrogen may in situ production of ¹⁴C produce an error in a ¹⁴C date if the ¹⁴C dating range is not extended beyond 50,000 BP.en_US
dc.description.notehydrology collectionen_US
dc.typeThesis-Reproduction (electronic)en_US
dc.typetexten_US
dc.subject.lcshHydrology.en_US
dc.subject.lcshGroundwater -- Arizona.en_US
dc.subject.lcshCarbon -- Isotopes.en_US
dc.subject.lcshWater -- Composition.en_US
thesis.degree.nameM.S.en_US
thesis.degree.levelmastersen_US
thesis.degree.disciplineHydrology and Water Resourcesen_US
thesis.degree.disciplineGraduate Collegeen_US
thesis.degree.grantorUniversity of Arizonaen_US
dc.contributor.chairDavis, Stanley N.en_US
dc.identifier.oclc212854615en_US
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