@misc{indiciae93d5707cb6c4,
  title = {Cambrian-lower Middle Ordovician passive carbonate margin, southern Appalachians},
  author = {J. Fred Read and John E. Repetski},
  year = {2012},
  doi = {10.1306/13331499m980271},
  url = {https://pubs.usgs.gov/publication/70044129},
  note = {Source identifier: 70044129}
}