@misc{indiciaeb221542b8e6a,
  title = {Geologic map of the Tharsis Quadrangle of Mars},
  author = {M. H. Carr},
  year = {1975},
  doi = {10.3133/i893},
  url = {https://pubs.usgs.gov/publication/i893},
  note = {Source identifier: i893}
}