Quaternary geology and liquefaction susceptibility, Napa, California 1:100,000 quadrangle: A digital database

Online link https://geo-nsdi.er.usgs.gov/metadata/open-file/98-460/metadata.faq.html
Description This Open-File report consists of a digital geologic map database and associated digital plot files and text files, revised from a hard copy by Sowers and others (1995). This digital map database provides current information on Quaternary geology and liq
Originators Sowers, Janet M.; Noller, Jay S.; and Lettis, William R.
Publication U.S. Geological Survey Open-File Report 98-460

Related topics

States or counties

NA-GEOL.PAT

Geologic map units

Label Definition
PTYPE Polygon type
LIQ Liquefaction susceptibility

NA-GEOL.AAT

Linear features on geologic map

Label Definition
LTYPE Line type

NA-GEOL.PAT

Surficial deposits at specific points (same attributes as polygon coverage NA-GEOL.PAT)

Label Definition

NA-HIST.PAT

Historical liquefaction events

Label Definition
PROBABLE_UNIT probable geologic unit of the historical liquefaction event (same as geologic units of polygon coverage NA-GEOL.PAT)
PTTYPE Type of event