@misc{indiciae957db03483ce,
  title = {Vesicularity of basalt erupted at Reykjanes Ridge crest},
  author = {W. A. Duffield},
  year = {1978},
  doi = {10.1038/274217a0},
  url = {https://pubs.usgs.gov/publication/70012642},
  note = {Source identifier: 70012642}
}