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Quaternary downcutting rate of the New River, Virginia, measured from differential decay of cosmogenic (super 26) Al and (super 10) Be in cave-deposited alluvium

Darryl E. Granger, James W. Kirchner and Robert C. Finkel
Quaternary downcutting rate of the New River, Virginia, measured from differential decay of cosmogenic (super 26) Al and (super 10) Be in cave-deposited alluvium
Geology (Boulder) (February 1997) 25 (2): 107-110

Abstract

The concentrations of the cosmogenic radionuclides (super 26) Al and (super 10) Be in quartz can be used to date sediment burial. Here we use (super 26) Al and (super 10) Be in cave-deposited river sediment to infer the time of sediment emplacement. Sediment burial dates from a vertical sequence of caves along the New River constrain its Quaternary downcutting rate to 27.3 + or - 4.5m/m.y. and may provide evidence of regional tectonic tilt.


ISSN: 0091-7613
EISSN: 1943-2682
Coden: GLGYBA
Serial Title: Geology (Boulder)
Serial Volume: 25
Serial Issue: 2
Title: Quaternary downcutting rate of the New River, Virginia, measured from differential decay of cosmogenic (super 26) Al and (super 10) Be in cave-deposited alluvium
Affiliation: University of California at Berkeley, Department of Geology and Geophysics, Berkeley, CA, United States
Pages: 107-110
Published: 199702
Text Language: English
Publisher: Geological Society of America (GSA), Boulder, CO, United States
References: 32
Accession Number: 1997-020211
Categories: Quaternary geologyGeochronology
Document Type: Serial
Bibliographic Level: Analytic
Illustration Description: illus. incl. 1 table, sketch map
N37°15'00" - N37°25'00", W80°49'60" - W80°34'60"
Secondary Affiliation: Lawrence Livermore National Laboratory, Livermore, CA, USA, United States
Country of Publication: United States
Secondary Affiliation: GeoRef, Copyright 2017, American Geosciences Institute. Reference includes data supplied by the Geological Society of America, Boulder, CO, United States
Update Code: 199707
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