Genesis of typic paleorthids and petrocalcic paleargids on the same fan terrace in the Avra Valley near Tucson, Arizona

Persistent Link:
http://hdl.handle.net/10150/191869
Title:
Genesis of typic paleorthids and petrocalcic paleargids on the same fan terrace in the Avra Valley near Tucson, Arizona
Author:
Levine, Steven Joel.
Issue Date:
1985
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:
Two soils, both underlain by petrocalcic horizons at shallow depths, occur together on the same geomorphic surface, an old fan terrace located in the Avra Valley near Tucson, Arizona. Both soils have formed from similar parent materials and are assumed to be of the same age. One of the soils, a Petrocalcic Paleargid, occupies the broad, flat interfluvial areas of the fan surface. It contains an argillic horizon above the hardpan and is carbonate free in the upper part. The lower portion of the argillic horizon has been engulfed by the petrocalcic horizon. The other soil, a Typic Paleorthid, occurs above and adjacent to the narrow drainage ways that incise the fan terrace. This soil lacks an argillic horizon and is calcareous to the soil surface. Although no direct evidence of a former argillic horizon remains, it is believed that an argillic horizon was once present and then was truncated. Truncation was followed by brecciation of the exposed pan surface and subsequent recementation. The observed differences between the two soils: calcium carbonate content, particle size distribution, color, morphology and size of calcite crystals, and clay mineralogy are a result of the pedogenic processes of argillic horizon engulfment and truncation followed by brecciation and recementation.
Type:
Thesis-Reproduction (electronic); text
LCSH Subjects:
Hydrology.; Soils -- Arizona -- Tucson Region -- Composition.; Soils -- Arizona -- Tucson Region -- Classification.; Alluvial fans -- Arizona -- Tucson Region.; Alluvial fans -- Arizona -- Avra Valley.
Degree Name:
M.S.
Degree Level:
masters
Degree Program:
Soil and Water Science; Graduate College
Degree Grantor:
University of Arizona
Committee Chair:
Hendricks, D. M.

Full metadata record

DC FieldValue Language
dc.language.isoenen_US
dc.titleGenesis of typic paleorthids and petrocalcic paleargids on the same fan terrace in the Avra Valley near Tucson, Arizonaen_US
dc.creatorLevine, Steven Joel.en_US
dc.contributor.authorLevine, Steven Joel.en_US
dc.date.issued1985en_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.abstractTwo soils, both underlain by petrocalcic horizons at shallow depths, occur together on the same geomorphic surface, an old fan terrace located in the Avra Valley near Tucson, Arizona. Both soils have formed from similar parent materials and are assumed to be of the same age. One of the soils, a Petrocalcic Paleargid, occupies the broad, flat interfluvial areas of the fan surface. It contains an argillic horizon above the hardpan and is carbonate free in the upper part. The lower portion of the argillic horizon has been engulfed by the petrocalcic horizon. The other soil, a Typic Paleorthid, occurs above and adjacent to the narrow drainage ways that incise the fan terrace. This soil lacks an argillic horizon and is calcareous to the soil surface. Although no direct evidence of a former argillic horizon remains, it is believed that an argillic horizon was once present and then was truncated. Truncation was followed by brecciation of the exposed pan surface and subsequent recementation. The observed differences between the two soils: calcium carbonate content, particle size distribution, color, morphology and size of calcite crystals, and clay mineralogy are a result of the pedogenic processes of argillic horizon engulfment and truncation followed by brecciation and recementation.en_US
dc.description.notehydrology collectionen_US
dc.typeThesis-Reproduction (electronic)en_US
dc.typetexten_US
dc.subject.lcshHydrology.en_US
dc.subject.lcshSoils -- Arizona -- Tucson Region -- Composition.en_US
dc.subject.lcshSoils -- Arizona -- Tucson Region -- Classification.en_US
dc.subject.lcshAlluvial fans -- Arizona -- Tucson Region.en_US
dc.subject.lcshAlluvial fans -- Arizona -- Avra Valley.en_US
thesis.degree.nameM.S.en_US
thesis.degree.levelmastersen_US
thesis.degree.disciplineSoil and Water Scienceen_US
thesis.degree.disciplineGraduate Collegeen_US
thesis.degree.grantorUniversity of Arizonaen_US
dc.contributor.chairHendricks, D. M.en_US
dc.contributor.committeememberPost, D. F.en_US
dc.contributor.committeememberStroehlein, J. L.en_US
dc.identifier.oclc213415454en_US
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