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| | Database for the geologic map of the Lassen Peak, Chaos Crags, and upper Hat Creek area, California |
 | | This database was constructed in order to produce a geologic map as a basis for understanding processes involved in the explosive eruptions of Lassen Peak and Chaos Crags and for producing a volcano-hazards assessment of the Lassen Peak area. |
 | | The scale of the source map limits the spatial resolution (scale) of the database to 1:24,000 or smaller except in the area of a 1:2,500 inset map of the Lassen Peak summit area. |
 | | Christiansen, R. L., Clynne, M. A., and Muffler, L. P., 2002, Geologic map of the Lassen Peak, Chaos Crags, and upper Hat Creek area, California: U.S. Geological Survey Geologic Investigations Series I-2723, scale 1:24,000 with inset map at 1:2,500. |
| pubs.usgs.gov /imap/i2723/metadata-geo.htm (3077 words) |
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