Age of Sheep Creek tephra (Pleistocene) in Central Alaska from thermoluminescence dating of bracketing loess

Auteur(s) et Affiliation(s)

BERGER, G.W.

Quaternary Sciences Center, Desert Research Institute, Reno, Nevada, Etats-Unis

Description :
The age of the Sheep Creek tephra (SCt), a widespread marker ash bed in eastern Alaska and western Yukon Territory, has been ambiguous and controversial. The AA. have obtained 3 reliable thermoluminescence age estimates from bracketing loess near Fairbanks that imply a deposition age of about 190,000 yr for SCt. This new reliable age assignment confirms independent stratigraphic evidence of a pre-last interglaciation age, and also has implications for regional correlations of glacial and nonglacial deposits.

Type de document :
Article de périodique

Source :
Quaternary research, issn : 0033-5894, 1996, vol. 45, n°. 3, p. 263-270, Collation : Illustration, Références bibliographiques : 15 ref.

Date :
1996

Editeur :
Pays édition : Etats-Unis, San Diego, CA, Elsevier

Langue :
Anglais