La Porte Hydraulic Gold Mine, Sierra Nevada, California

Top to bottom: On-site at the La Porte hydraulic gold mine, situated in the vicinity of La Porte, Sierra Nevada, California. Seekers of paleobotanical adventure investigate blocks of leaf-bearing upper Eocene La Porte Tuff (dated by radiometric methods at 34.2 million years old) that have fallen from the rim of the great hydraulic pit. Photographs originally taken with a Minolta 35mm camera.

Note--Always check with the US Forest Service to determine if unauthorized fossil collecting is allowed at the La Porte locality.

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