@misc{indiciae69c7abbbd0e1,
  title = {Analysis of structure below an unconformity},
  author = {J.B. Mertie},
  year = {1922},
  doi = {10.2113/gsecongeo.17.7.572},
  url = {https://pubs.usgs.gov/publication/70206796},
  note = {Source identifier: 70206796}
}