Identifying Problematic Hydric Soils Derived from Red Parent Materials in the United States

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dc.contributor.advisorRabenhorst, Martin Cen_US
dc.contributor.authorMack, Sara Christineen_US
dc.contributor.departmentEnvironmental Science and Technologyen_US
dc.contributor.publisherDigital Repository at the University of Marylanden_US
dc.contributor.publisherUniversity of Maryland (College Park, Md.)en_US
dc.date.accessioned2018-07-17T06:28:34Z
dc.date.available2018-07-17T06:28:34Z
dc.date.issued2018en_US
dc.description.abstractHydric soils derived from some red parent materials are “problematic” to identify during wetland delineations because they resist redox-induced color changes. These (PRPM) soils can be identified using the F21 – Red Parent Material field indicator, but the distribution and cause of the phenomenon, remains uncertain. The objectives of this study were to identify locations where PRPM occurs for appropriate use of the F21 field indicator throughout the country, and to better understand why PRPM soils resist redox-induced color changes. We found that PRPM is associated with sedimentary, hematite-rich, “red bed” formations and the deposits derived from them. Guidance maps have been developed showing where use of F21 is appropriate to support hydric soil (and therefore wetland) delineations impacted by PRPM. We also demonstrated that the cause of PRPM appears to be related to larger crystallite sizes of hematite in PRPM soils.en_US
dc.identifierhttps://doi.org/10.13016/M28G8FM6B
dc.identifier.urihttp://hdl.handle.net/1903/21049
dc.language.isoenen_US
dc.subject.pqcontrolledSoil sciencesen_US
dc.subject.pqcontrolledEnvironmental managementen_US
dc.subject.pqcontrolledWater resources managementen_US
dc.subject.pquncontrolledHematiteen_US
dc.subject.pquncontrolledHydric Soil Field Indicatorsen_US
dc.subject.pquncontrolledProblematic Hydric Soilsen_US
dc.subject.pquncontrolledRed Bedsen_US
dc.subject.pquncontrolledRed Parent Materialen_US
dc.subject.pquncontrolledWetland Delineationen_US
dc.titleIdentifying Problematic Hydric Soils Derived from Red Parent Materials in the United Statesen_US
dc.typeThesisen_US

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