@misc{indiciae6fb297622337,
  title = {Geologic map of the Scotts Mills, Silverton, and Stayton Northeast 7.5 minute quadrangles, Northwest Oregon: A digital database},
  author = {Terry Tolan and Marvin Beeson and Karen L. Wheeler},
  year = {1999},
  doi = {10.3133/ofr99141},
  url = {https://pubs.usgs.gov/publication/ofr99141},
  note = {Source identifier: ofr99141}
}