Persistent Link:
http://hdl.handle.net/10150/191827
Title:
Natural iodine-129 as a ground-water tracer
Author:
Fabryka-Martin, June Taylor.
Issue Date:
1984
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:
Iodine-129 (t ½, 16 My) is a naturally-occurring tracer which can be used to study hydrologic and geologic processes on time scales up to 100 My. Global modelling suggests that the pre-bomb atmospheric ratio ¹²⁹I/I should have been constant in time and space. This ratio is the starting value in ground-water recharge, and subsequent ratio changes are determined by isotope contributions from three sources: recharge water, iodine leached from the formation, and in situ uranium fission. This expected behavior is compared to field study results. Ground-water samples from the Great Artesian Basin, Australia, provide an estimate of the atmospheric equilibrium ratio, 6 x 10⁻¹³. Down-gradient changes in water up to 1 My old suggest that subsurface production can be significant. The usefulness of ¹²⁹I as an indicator of brine source and age is verified in brines collected in and around Louisiana salt domes. The method leads to ages of 7 and 9 My for two brine pockets trapped within Jurassic salt, and 32 to > 40 My for oil-field brines in Miocene sands adjacent to the domes.
Type:
Thesis-Reproduction (electronic); text
LCSH Subjects:
Hydrology.; Groundwater tracers.; Groundwater flow.; Iodine -- Isotopes.
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.titleNatural iodine-129 as a ground-water traceren_US
dc.creatorFabryka-Martin, June Taylor.en_US
dc.contributor.authorFabryka-Martin, June Taylor.en_US
dc.date.issued1984en_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.abstractIodine-129 (t ½, 16 My) is a naturally-occurring tracer which can be used to study hydrologic and geologic processes on time scales up to 100 My. Global modelling suggests that the pre-bomb atmospheric ratio ¹²⁹I/I should have been constant in time and space. This ratio is the starting value in ground-water recharge, and subsequent ratio changes are determined by isotope contributions from three sources: recharge water, iodine leached from the formation, and in situ uranium fission. This expected behavior is compared to field study results. Ground-water samples from the Great Artesian Basin, Australia, provide an estimate of the atmospheric equilibrium ratio, 6 x 10⁻¹³. Down-gradient changes in water up to 1 My old suggest that subsurface production can be significant. The usefulness of ¹²⁹I as an indicator of brine source and age is verified in brines collected in and around Louisiana salt domes. The method leads to ages of 7 and 9 My for two brine pockets trapped within Jurassic salt, and 32 to > 40 My for oil-field brines in Miocene sands adjacent to the domes.en_US
dc.description.notehydrology collectionen_US
dc.typeThesis-Reproduction (electronic)en_US
dc.typetexten_US
dc.subject.lcshHydrology.en_US
dc.subject.lcshGroundwater tracers.en_US
dc.subject.lcshGroundwater flow.en_US
dc.subject.lcshIodine -- Isotopes.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.contributor.committeememberLong, Austinen_US
dc.contributor.committeememberSimpson, Eugene S.en_US
dc.identifier.oclc213299465en_US
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