Level of Lake Lahontan during deposition of the Trego Hot Springs tephra about 23,400 years ago

Auteur :
DAVIS, J. O.

Description :
The Trego Hot Springs tephra bed is a silicic tephra about 23,400 yr old, found at several localities in pluvial lake sediments in northern Nevada, southern Oregon, and northeastern California. It has been characterized petrographically, by the major and minor element chemistry of its glass, and by its stratigraphic position with respect to other tephra layers. When the tephra fell, pluvial Lake Lahontan stood between 1256 and 1260 m, and that immediately thereafter the lake rose to at least 1275 m. The Lake Lahontan area has been affected by isostatic subsidence and rebound in response to changing water loads, so that caution is required in the use of lakeshore elevations in correlation.


Type de document :
Article de périodique

Source :
Quaternary research New York, 1983, vol. 19, n°. 3, p. 312-324, Références bibliographiques : 20 réf.

Date :
1983