@misc{indiciae47de1048faa4,
  title = {Methodology for construction of a three-layer geologic model of the conterminous United States using land surface, top of bedrock, and top of basement},
  author = {Donald S. Sweetkind},
  year = {2026},
  doi = {10.3133/dr1220},
  url = {https://pubs.usgs.gov/publication/dr1220},
  note = {Source identifier: dr1220}
}