@misc{indiciae8dd7589a602e,
  title = {Geologic map of the MTM 25047 and 20047 quadrangles, central Chryse Planitia/Viking 1 Lander site, Mars},
  author = {L.S. Crumpler and R. A. Craddock and J.C. Aubele},
  year = {2001},
  doi = {10.3133/i2693},
  url = {https://pubs.usgs.gov/publication/i2693},
  note = {Source identifier: i2693}
}