1. Geoscience Data Catalog

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

Geologic maps, Geology, Geospatial datasets, Hazards, Liquefaction, Unconsolidated deposits, GeoscientificInformation

States or counties

Alameda, Contra Costa, Marin, San Francisco, San Mateo

PI-GEOL.PAT

Geologic map units symbols (no full descriptions found)

Label Definition

PI-GEOL.AAT

Linear geologic features

Label Definition
LTYPE Line type

PI-GEOL.PAT

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

Label Definition

PI-STRC.AAT

fold axes

Label Definition
LTYPE Line type

PI-STRC.PAT

Strike and dip information of bedding

Label Definition
PTTYPE Point type
DIP Dip of bedding
STRIKE Strike of bedding

PI-WELLS.PAT

Exploratory oil wells

Label Definition
PTTYPE Point type