Geologic Map Database for Spreckels Quadrangle in Monterey County

USGS geologic map database depicts bedrock and surficial deposits at a 1:24,000 scale for the Spreckels 7.5-minute quadrangle in Monterey County, California. The database includes polygon, line, and point coverages showing faults, rock units, strike and dip information, and landslide indicators. It was compiled from published, unpublished, and new mapping data by the U.S. Geological Survey.

Use Cases

• Model earthquake shaking potential by analyzing fault line and rock unit polygon data.
• Assess regional landslide risk using point and line coverage data indicating landslide directions.
• Study regional geologic history and framework through stratigraphic unit polygons and fold axis line data.
• Map general distribution of bedrock and surficial deposits using the polygon coverage of rock units.

Strengths

• Spatial resolution at a detailed 1:24,000 scale.
• Includes multiple data coverages: polygons for geology, points/lines for structure, and points/lines for landslides.

Limitations

• Spatial resolution is limited to 1:24,000 or smaller, insufficient for detailed site development.
• Database cannot be used to accurately identify or delineate individual landslides.

Provenance

Source

U.S. Geological Survey (USGS), compiled under stratigraphic nomenclature of the USGS.

Collection Method

Compiled from previously published and unpublished data combined with new mapping by the authors.

Time Range

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Freshness

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Geography

Spreckels 7.5-minute quadrangle, Monterey County, California, USA.