SGMC polygons for unit ORTsfj;0, John Day Formation of east-central Oregon (lower Miocene, Oligocene, and uppermost Eocene?)

Polygons of the specified geologic unit are provided below as a zipped shapefile. Only a few, simple attributes are included here. Coordinates are geographic with horizontal datum WGS84.

File name Size Unit details
ORTsfj_0.zip 126 kB Details