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USGS - science for a changing world

Organization

California Geological Survey

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Geoscientific collections managed by California Geological Survey are aggregated in the National Digital Catalog to enhance discovery and use of valuable samples and data for further scientific research. Contact information and material access instructions are provided for the individual collections.
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A collection of paper geologic maps contained in the files of the Regional Geologic Mapping Project used in the preparation of 1:250,000 and 1:100,000-scale compilations.
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This collection of photographs from California Geological Survey has not yet been inventoried. Please contact California Geological Survey to inquire about this collection. The aerial photographs are held by the California Geological Survey's Menlo Park office.
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Geotechnical report collected for Seismic Hazard Zonation. The reports include borehole data (lithology, stratigraphy, ground water, sample type) and test data (blow count, grain size, shear strength).
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