Porosity, pore-size distribution and pore surface area of the Apache Leap tuff near Superior, Arizona using mercury porosimetry

Persistent Link:
http://hdl.handle.net/10150/191980
Title:
Porosity, pore-size distribution and pore surface area of the Apache Leap tuff near Superior, Arizona using mercury porosimetry
Author:
Vogt, Gerald Thomas,1960-
Issue Date:
1988
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:
Characterization and quantification of fluid flow is dependent upon the distribution, size and interconnectedness of pores in an unsaturated rock matrix. This study examines the use of mercury porosimetry in determining porosity, pore-size distribution and pore surface area of an unsaturated, slightly welded to densely welded tuff near Superior, Arizona. 121 samples of tuff were subjected to mercury intrusion pressures to 200 MPa. A bimodal pore-size distribution exists for all samples of slightly welded tuff with the larger pore size class mode diameter averaging 2.91 μm and the lower pore size class mode diameter averaging .07 μm. Interconnected porosity, pore surface area and bulk density averaged 14.62%, 3.46 m²/gm and 2.13 gm/cm³, respectively. On average, 52.73% of the porosity was accounted for by the large pore size class while 96.28% of the pore surface area was accounted for by the small pore size class. Samples of densely welded tuff exhibited a unimodal pore-size distribution with an average mode diameter of .035 μm.
Type:
Thesis-Reproduction (electronic); text
LCSH Subjects:
Hydrology.; Groundwater flow.; Volcanic ash, tuff, etc. -- Arizona -- Superior Region.; Rock mechanics.; Rocks -- Arizona -- Superior Region -- Permeability.
Degree Name:
M.S.
Degree Level:
masters
Degree Program:
Hydrology and Water Resources; Graduate College
Degree Grantor:
University of Arizona
Committee Chair:
Evans, Daniel D.

Full metadata record

DC FieldValue Language
dc.language.isoenen_US
dc.titlePorosity, pore-size distribution and pore surface area of the Apache Leap tuff near Superior, Arizona using mercury porosimetryen_US
dc.creatorVogt, Gerald Thomas,1960-en_US
dc.contributor.authorVogt, Gerald Thomas,1960-en_US
dc.date.issued1988en_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.abstractCharacterization and quantification of fluid flow is dependent upon the distribution, size and interconnectedness of pores in an unsaturated rock matrix. This study examines the use of mercury porosimetry in determining porosity, pore-size distribution and pore surface area of an unsaturated, slightly welded to densely welded tuff near Superior, Arizona. 121 samples of tuff were subjected to mercury intrusion pressures to 200 MPa. A bimodal pore-size distribution exists for all samples of slightly welded tuff with the larger pore size class mode diameter averaging 2.91 μm and the lower pore size class mode diameter averaging .07 μm. Interconnected porosity, pore surface area and bulk density averaged 14.62%, 3.46 m²/gm and 2.13 gm/cm³, respectively. On average, 52.73% of the porosity was accounted for by the large pore size class while 96.28% of the pore surface area was accounted for by the small pore size class. Samples of densely welded tuff exhibited a unimodal pore-size distribution with an average mode diameter of .035 μm.en_US
dc.description.notehydrology collectionen_US
dc.typeThesis-Reproduction (electronic)en_US
dc.typetexten_US
dc.subject.lcshHydrology.en_US
dc.subject.lcshGroundwater flow.en_US
dc.subject.lcshVolcanic ash, tuff, etc. -- Arizona -- Superior Region.en_US
dc.subject.lcshRock mechanics.en_US
dc.subject.lcshRocks -- Arizona -- Superior Region -- Permeability.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.chairEvans, Daniel D.en_US
dc.identifier.oclc213332692en_US
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