EVIDENCE FOR COMPARTMENTALIZATION OF AQUIFER SYSTEMS: SOLUTE AND ISOTOPE GEOCHEMISTRY OF GROUNDWATERS IN THE MIDDLE SAN PEDRO BASIN, ARIZONA

Persistent Link:
http://hdl.handle.net/10150/193440
Title:
EVIDENCE FOR COMPARTMENTALIZATION OF AQUIFER SYSTEMS: SOLUTE AND ISOTOPE GEOCHEMISTRY OF GROUNDWATERS IN THE MIDDLE SAN PEDRO BASIN, ARIZONA
Author:
Adkins, Candice Breanna
Issue Date:
2009
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:
The Middle San Pedro Basin in southeastern Arizona is a typical alluvial basin in the semi-arid southwestern United States with a rapidly growing population that is dependent upon groundwater resources for water supply. This study investigated recharge areas, compartmentalization and potential mixing of water sources, and travel times of groundwater throughout the basin using variations in major ion chemistry (water type, Ca/Sr ratios, SO4/Cl ratios) and isotope ratios (18O, 2H, 3H, 34S, 13C, 14C) of groundwaters, surface waters and precipitation in conjunction with hydrogeologic data (e.g. hydraulic head and hydrostratigraphy). Recent recharge (<50 years) has occurred within mountain systems along the basin margins, and in shallow floodplain aquifers adjacent to the San Pedro River. Groundwaters in confined aquifers in the central basin were recharged at high elevation in the fractured bedrock and have been extensively modified by water-rock reactions over long timescales (up to 34,600 years). These results can be used to constrain physical assumptions of future groundwater flow models designed to help make improved water management decisions.
Type:
text; Electronic Thesis
Keywords:
Groundwater; Isotope; Modeling; Recharge; Solute; Tracer
Degree Name:
M.S.
Degree Level:
masters
Degree Program:
Hydrology; Graduate College
Degree Grantor:
University of Arizona
Committee Chair:
McIntosh, Jennifer C.

Full metadata record

DC FieldValue Language
dc.language.isoENen_US
dc.titleEVIDENCE FOR COMPARTMENTALIZATION OF AQUIFER SYSTEMS: SOLUTE AND ISOTOPE GEOCHEMISTRY OF GROUNDWATERS IN THE MIDDLE SAN PEDRO BASIN, ARIZONAen_US
dc.creatorAdkins, Candice Breannaen_US
dc.contributor.authorAdkins, Candice Breannaen_US
dc.date.issued2009en_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.abstractThe Middle San Pedro Basin in southeastern Arizona is a typical alluvial basin in the semi-arid southwestern United States with a rapidly growing population that is dependent upon groundwater resources for water supply. This study investigated recharge areas, compartmentalization and potential mixing of water sources, and travel times of groundwater throughout the basin using variations in major ion chemistry (water type, Ca/Sr ratios, SO4/Cl ratios) and isotope ratios (18O, 2H, 3H, 34S, 13C, 14C) of groundwaters, surface waters and precipitation in conjunction with hydrogeologic data (e.g. hydraulic head and hydrostratigraphy). Recent recharge (<50 years) has occurred within mountain systems along the basin margins, and in shallow floodplain aquifers adjacent to the San Pedro River. Groundwaters in confined aquifers in the central basin were recharged at high elevation in the fractured bedrock and have been extensively modified by water-rock reactions over long timescales (up to 34,600 years). These results can be used to constrain physical assumptions of future groundwater flow models designed to help make improved water management decisions.en_US
dc.typetexten_US
dc.typeElectronic Thesisen_US
dc.subjectGroundwateren_US
dc.subjectIsotopeen_US
dc.subjectModelingen_US
dc.subjectRechargeen_US
dc.subjectSoluteen_US
dc.subjectTraceren_US
thesis.degree.nameM.S.en_US
thesis.degree.levelmastersen_US
thesis.degree.disciplineHydrologyen_US
thesis.degree.disciplineGraduate Collegeen_US
thesis.degree.grantorUniversity of Arizonaen_US
dc.contributor.chairMcIntosh, Jennifer C.en_US
dc.contributor.committeememberEastoe, Christopher Jen_US
dc.contributor.committeememberDickinson, Jesse Een_US
dc.contributor.committeememberMeixner, Thomasen_US
dc.identifier.proquest10538en_US
dc.identifier.oclc659752270en_US
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