@misc{indiciae6398eb874bae,
  title = {Contact relations of the Ione and Valley Springs formations in the east-central Great Valley, California},
  author = {J. A. Bartow},
  year = {1992},
  doi = {10.3133/ofr92588},
  url = {https://pubs.usgs.gov/publication/ofr92588},
  note = {Source identifier: ofr92588}
}