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Surface-exposure ages of Front Range moraines that may have formed during the Younger Dryas, 8.2 cal ka, and Little Ice Age events

Dates

Year
2007

Citation

Benson, Larry, Madole, Richard, Kubik, Peter, and McDonald, Richard, 2007, Surface-exposure ages of Front Range moraines that may have formed during the Younger Dryas, 8.2 cal ka, and Little Ice Age events: Quaternary Science Reviews, v. 26, iss. 11–12, p. 1638-1649.

Summary

Surface-exposure (10Be) ages have been obtained on boulders from three post-Pinedale end-moraine complexes in the Front Range, Colorado. Boulder rounding appears related to the cirque-to-moraine transport distance at each site with subrounded boulders being typical of the 2-km-long Chicago Lakes Glacier, subangular boulders being typical of the 1-km-long Butler Gulch Glacier, and angular boulders being typical of the few-hundred-m-long Isabelle Glacier. Surface-exposure ages of angular boulders from the Isabelle Glacier moraine, which formed during the Little Ice Age (LIA) according to previous lichenometric dating, indicate cosmogenic inheritance values ranging from 0 to ∼3.0 10Be ka.11Surface-exposure ages in this paper are labeled [...]

Contacts

Communities

  • USGS National Research Program

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Provenance

Added to ScienceBase on Thu Apr 18 08:50:44 MDT 2013 by processing file <b>Environmental Fluid Dynamics.xml</b> in item <a href="https://www.sciencebase.gov/catalog/item/504216bae4b04b508bfd3395">https://www.sciencebase.gov/catalog/item/504216bae4b04b508bfd3395</a>

Additional Information

Identifiers

Type Scheme Key
DOI http://sciencebase.gov/vocab/identifierScheme 10.1016/j.quascirev.2007.02.015

Citation Extension

journalQuaternary Science Reviews
parts
typePages
value1638-1649
typeVolume
value26
typeIssue
value11–12
citationTypeJournal Article

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