@misc{indiciaede9112ca6fa2,
  title = {Geomagnetic polarity event recorded at 1.1 m.y. B.P. on Cobb Mountain, Clear Lake volcanic field, California},
  author = {Edward A. Mankinen and J.M. Donnelly and C. S. Grommé},
  year = {1978},
  doi = {10.1130/0091-7613(1978)6<653:gperam>2.0.co;2},
  url = {https://pubs.usgs.gov/publication/70197174},
  note = {Source identifier: 70197174}
}