Geologic Map of the Scotts Mills, Silverton, and Stayton Northeast 7.5 Minute Quadrangles, Northwest Oregon: A Digital Database: Silverton Quadrangle

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Description This digital map database, compiled from previously published and unpublished data, and new mapping by the authors, represents the general distribution of bedrock and surficial deposits of the Silverton 7.5 minute quadrangle along the eastern margin of th
Originators Tolan, Terry L.; Beeson, Marvin H.; and Wheeler, Karen L.
Publication U.S. Geological Survey Open-File Report 99-141

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Overview of attributes

>contact, inferred
>fault, concealed
>map boundary
>normal fault, concealed
>normal fault, concealedm
>normal fault, inferred
>normal fault, inferredm
>f.a., monocline, concealed
>f.a., monocline, concealedm
>f.a., monocline, inferred
>f.a., monocline, inferredm
>f.a., monocline, plunge
>map boundary

More information can be found in the included readme file.


Silverton Geologic map units

Label Definition
PTYPE Polygon type


Linear geologic map features

Label Definition
LTYPE Line type


Geologic unit at specific points

Label Definition
PTYPE Point Type


Linear structural features

Label Definition
LTYPE Line type


Information on a singular bedding type and position

Label Definition
PTTYPE Point type
DIP Bedding Dip
STRIKE Bedding strike


Neatline for Silverton and Scotts Mills

Label Definition
LTYPE Line Type


well sample data

Label Definition
PTTYPE Point Type
SAMPNO Sample number to identify well
TOB elevation relative to sea level to top of basalt in feet