Geologic controls on the occurrence and movement of water in the Lower Cienega Creek Basin

Persistent Link:
http://hdl.handle.net/10150/192089
Title:
Geologic controls on the occurrence and movement of water in the Lower Cienega Creek Basin
Author:
Ellett, William Jess,1955-
Issue Date:
1994
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 occurrence and movement of water in lower Cienega Creek Basin is controlled mainly by the depth of bedrock and its geometry. Gravity data collected in the basin and its margins was inverted to model geologic cross-sections. Depths from these model cross-sections were then contoured to generate isopach maps and a depth to bedrock map. These maps indicate a depth of over 1,800 feet in the northwest portion of the basin and a thick wedge of denser, less permeable Pantano rocks in the same area. Shallow bedrock and Pantano rocks are thought to block ground water flow on the northwest edge of the basin and force it to the surface to generate perennial flow in Cienega Creek Natural Preserve. In addition, the possible existence of a structural trough that may channel ground water from the upper basin into the San Pedro Basin was detected with gravity data. Temperature and electrical conductivity data support the hypothesis that the source of perennial flow in Cienega Creek Natural Preserve is simple overflow from the lower basin and that the intermittent flow in the Preserve is due to variations in the thickness of the stream channel alluvium.
Type:
Thesis-Reproduction (electronic); text
LCSH Subjects:
Hydrology.; Hydraulics -- Arizona -- Cienega Creek Basin.; Hydrogeology -- Arizona -- Cienega Creek Basin.
Degree Name:
M.S.
Degree Level:
masters
Degree Program:
Hydrology and Water Resources; Graduate College
Degree Grantor:
University of Arizona
Committee Chair:
Wilson, L. G.

Full metadata record

DC FieldValue Language
dc.language.isoenen_US
dc.titleGeologic controls on the occurrence and movement of water in the Lower Cienega Creek Basinen_US
dc.creatorEllett, William Jess,1955-en_US
dc.contributor.authorEllett, William Jess,1955-en_US
dc.date.issued1994en_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 occurrence and movement of water in lower Cienega Creek Basin is controlled mainly by the depth of bedrock and its geometry. Gravity data collected in the basin and its margins was inverted to model geologic cross-sections. Depths from these model cross-sections were then contoured to generate isopach maps and a depth to bedrock map. These maps indicate a depth of over 1,800 feet in the northwest portion of the basin and a thick wedge of denser, less permeable Pantano rocks in the same area. Shallow bedrock and Pantano rocks are thought to block ground water flow on the northwest edge of the basin and force it to the surface to generate perennial flow in Cienega Creek Natural Preserve. In addition, the possible existence of a structural trough that may channel ground water from the upper basin into the San Pedro Basin was detected with gravity data. Temperature and electrical conductivity data support the hypothesis that the source of perennial flow in Cienega Creek Natural Preserve is simple overflow from the lower basin and that the intermittent flow in the Preserve is due to variations in the thickness of the stream channel alluvium.en_US
dc.description.notehydrology collectionen_US
dc.typeThesis-Reproduction (electronic)en_US
dc.typetexten_US
dc.subject.lcshHydrology.en_US
dc.subject.lcshHydraulics -- Arizona -- Cienega Creek Basin.en_US
dc.subject.lcshHydrogeology -- Arizona -- Cienega Creek Basin.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.chairWilson, L. G.en_US
dc.identifier.oclc224077500en_US
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