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(browse)ScienceBase CatalogUSGS Denver Library Photographic CollectionAlternating zones of diatomaceous and cherty rocks. Santa Barbara County, California. 1931.

Alternating zones of diatomaceous and cherty rocks. Santa Barbara County, California. 1931. [Folder View]

Alternating zones of diatomaceous and cherty rocks, averaging 5 to 10 feet in thickness, entrance road to the diatomite quarry near Lompoc. Santa Barbara County, California. 1931.