Skip to main content
U.S. flag

An official website of the United States government

Early Pleistocene(?) pollen spectra from near Lake Tahoe, California

November 1, 1973

Fossil pollen was recovered at Tahoe City, Calif., from beneath a 1.9-m.y.-old volcanic flow. Pollen counts of four fossil samples are compared with soil-surface pollen samples from the Sierra Nevada. The presence of Picea (spruce) pollen in the fossil samples suggests that summer drought conditions in the central Sierra Nevada were less severe prior to 1.9 m.y. ago than they are now.

Citation Information

Publication Year 1973
Title Early Pleistocene(?) pollen spectra from near Lake Tahoe, California
DOI
Authors David P. Adam
Publication Type Article
Publication Subtype Journal Article
Series Title Journal of Research of the U.S. Geological Survey
Series Number
Index ID 70162012
Record Source USGS Publications Warehouse
USGS Organization