@misc{indiciaeb437ac0636d1,
  title = {Field Trip 9: San Francisco to Point Reyes: Both sides of the San Andreas fault},
  author = {J. C. Clark and Clyde Wahrhaftig and E. E. Brabb},
  year = {1991},
  url = {https://pubs.usgs.gov/publication/70197580},
  note = {Source identifier: 70197580}
}