Bright Angel and Eminence Faults, Eastern Grand Canyon, Arizona

@inproceedings{Huntoon1975BrightAA,
  title={Bright Angel and Eminence Faults, Eastern Grand Canyon, Arizona},
  author={Peter W. Huntoon and James W. Sears},
  year={1975}
}
The Bright Angel and Eminence faults trend northeastward for approximately 60 mi (100 km) through the eastern Grand Canyon region. The Bright Angel fault parallels basement foliation. Activity along the fault dates from Precambrian time. The first record of movement indicates that it was reverse; it coincided with the deposition of the basal Shinumo Quartzite. Additional reverse movement occurred following intrusion of the Unkar Group by diabase sills and dikes resulting in a total of as much… CONTINUE READING