@misc{indiciaeb7787d2c79b7,
  title = {Geologic map of the Black Canyon 15-minute quadrangle, Mohave County, Arizona, and Clark County, Nevada},
  author = {R. Ernest Anderson},
  year = {1978},
  doi = {10.3133/gq1394},
  url = {https://pubs.usgs.gov/publication/gq1394},
  note = {Source identifier: gq1394}
}