Quaternary Geology and Liquefaction Susceptibility, San Francisco, California 1:100,000 Quadrangle: A digital database

Online link https://geo-nsdi.er.usgs.gov/metadata/open-file/97-715/metadata.faq.html
Description In this study, we develop a liquefaction susceptibility map of the San Francisco 1:100,000 quadrangle using Quaternary geologic mapping, historical liquefaction information, groundwater data, and previous studies.
Originators Knudsen, Keith L.; Noller, Jay S.; Sowers, Janet M.; and Lettis, William R.
Publication U.S. Geological Survey Open-File Report 97-715

Related topics

States or counties

SF-GEOL.PAT

Geologic map units

Label Definition
PTYPE Polygon type

SF-GEOL.AAT

Linear features on geologic map

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LTYPE Line type

SF-GEOL.PAT

Geologic units at specific locations (same attributes as polygon coverage SF-GEOL.PAT)

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SF-HIST.PAT

Historical liquefaction events

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PTTYPE Point type

SF-LIQU.PAT

susceptibility of deposits to liquefaction as a function of groundwater depth within that deposit

Label Definition
LIQPOT Liquefaction potential

SF-LIQU.AAT

Linear features on liquefaction susceptibility map (same attributes as arc coverage SF-GEOL.AAT)

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SF-LIQU.PAT

Liquefaction susceptibility at specific location (same attributes as polygon coverage SF-LIQU.PAT)

Label Definition