@misc{indiciae1bc303bad1c2,
  title = {Map showing large structures interpreted from geophysical data in the vicinity of New Madrid, Missouri},
  author = {Susan Rhea and Russell L. Wheeler},
  year = {1994},
  doi = {10.3133/mf2264b},
  url = {https://pubs.usgs.gov/publication/mf2264B},
  note = {Source identifier: mf2264B}
}