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

David P. Adam

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USGS · 70162012

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

David P. Adam

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Abstract

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.

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Journal of Research of the U.S. Geological Survey Article

Source-reported bounding extent: 39.16327591892457° to 39.18190710800285° latitude; -120.17755508422853° to -120.13541221618651° longitude. This indicates report coverage, not an exact sampling location. View area on OpenStreetMap.

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David P. Adam. 1973. Early Pleistocene(?) pollen spectra from near Lake Tahoe, California. https://pubs.usgs.gov/publication/70162012

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