@misc{indiciae836d19149829,
  title = {Crustal structure of the western New England Appalachians and the Adirondack Mountains},
  author = {S. Hughes and J.H. Leutgert},
  year = {1991},
  url = {https://pubs.usgs.gov/publication/70016506},
  note = {Source identifier: 70016506}
}