Geologic map of the Silver Lake quadrangle, Cowlitz County, Washington

Online link https://geo-nsdi.er.usgs.gov/metadata/map-mf/2371/metadata.faq.html
Description This digital map database, compiled from previously published and unpublished data, and new mapping by the authors, represents the general distribution of bedrock and surficial deposits of the Silver lake 7.5 minute quadrangle. The database delineates ma
Originators Evarts, Russell C.
Publication U.S. Geological Survey Miscellaneous Field Studies Map MF-2371

Related topics

States or counties

sl_geo.pat

Geologic units and other polygonal features

Label Definition
PTYPE Geologic unit designation

sl_geo.aat

Linear geological features

Label Definition
LTYPE Type of linear geologic feature

sl_stx.aat

Linear structural features

Label Definition
LTYPE Type of linear structural feature
DESC Cross section identity

sl_stx.pat

Geologically-significant points

Label Definition
PTTYPE Geological significance of the point
DIP Dip angle in degrees
STRIKE Azimuth of strike in degrees

sl_chm.pat

Points where chemical analyses were carried out on volcanic and intrusive rocks

Label Definition
PTTYPE type of analysis
SAMPNO Sample identification code

sl_rad.pat

Points where radiometric ages were obtained

Label Definition
PTTYPE Type of point feature
SAMPNO Sample identification code
AGE Radiometric age estimate with expected uncertainty (one sigma)

sl_fos.pat

Fossil localities from Roberts (1958)

Label Definition
PTTYPE Significance of the point
SAMPNO Sample identification code
PLOTNO Plotted identity on map

sl_coal.pat

Coal localities

Label Definition
PTTYPE Significance of point

sl_clay.pat

Clay localities

Label Definition
PTTYPE Significance of point