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Dating techniques for piedmont landforms in Maricopa County

dc.contributor.authorYoung, J.J.
dc.date.accessioned2018-09-29T02:11:29Z
dc.date.available2018-09-29T02:11:29Z
dc.date.issued2010-12-20
dc.identifier.citationYoung, J.J., 2010, Dating techniques for piedmont landforms in Maricopa County. Arizona Geological Survey Open File Report, OFR-10-05, 24 p.
dc.identifier.urihttp://hdl.handle.net/10150/629719
dc.descriptionThis dating technique assessment demonstrates how landform surface age estimates can be used in the evaluation of alluvial fan flood hazards in Maricopa County, Arizona. Detailed geomorphic mapping of alluvial fan surfaces combined with surface age estimates reveal the degree of flood hazards by identifying the most recently active active flooding areas. Geomorphic mapping and application of relative dating methods (surface morphology, degree of soil and desert pavement development, vegetation type and density, carbonate content and structure) should be performed prior to applying any numerical dating techniques. However, by themselves, relative dating techniques do not provide direct age estimates for Holocene surfaces. OSL and AMS radiocarbon dating methods are the most applicable numerical dating methods for dating alluvial fan sediments on fan landforms in Maricopa County. Cosmogenic nuclide dating and varnish microlamination correlation are the most favorable methods for estimating surface ages. Varnish microlamination (VML) is a correlative method and should be evaluated further in Maricopa County.
dc.language.isoen
dc.relation.ispartofseriesOFR-10-05
dc.relation.urlhttps://library.azgs.arizona.edu/item/AOFR-1552431238620-754
dc.rightsArizona Geological Survey. All rights reserved.
dc.subjectArizona Geological Survey Open File Reports
dc.subjectQuaternary
dc.subjectPleistocene
dc.subjectHolocene
dc.subjectMaricopa County
dc.subjectarid enviroments
dc.subjectBasin and Range Province
dc.subjectArizona
dc.subjectvarnish microlamination
dc.subjectdesert pavement
dc.subjectflood recurrence rates
dc.subjectgeomorphology
dc.subjectcosmogenic dates
dc.subjectalluvial fan
dc.subjectpiedmont
dc.subjectgeochronology
dc.titleDating techniques for piedmont landforms in Maricopa County
csdgm.bounding.west-117.246
csdgm.bounding.east-107.051
csdgm.bounding.north38.2234
csdgm.bounding.south30.6974
dc.description.noteThis report is part of a larger product, Refinement of Methodology: Alluvial Fan Flood Hazard Identification & Mitigation Methods, prepared by J.E. Fuller on behalf of the Flood Control District of Maricopa County, Arizona.
dc.description.collectioninformationDocuments in the AZGS Document Repository collection are made available by the Arizona Geological Survey (AZGS) and the University Libraries at the University of Arizona. For more information about items in this collection, please contact azgs-info@email.arizona.edu.
refterms.dateFOA2018-09-29T02:11:29Z


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