Doughty, P.T.; Price, R.A. (2000). "Geology of the Purcell Trench rift valley and Sandpoint Conglomerate: Eocene en echelon normal faulting and synrift sedimentation along the eastern flank of the Priest River metamorphic complex, northern Idaho". GSA Bulletin. 112 (9): 1356–1374. Bibcode:2000GSAB..112.1356D. doi:10.1130/0016-7606(2000)112<1356:GOTPTR>2.0.CO;2.
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Doughty, P.T.; Price, R.A. (2000). "Geology of the Purcell Trench rift valley and Sandpoint Conglomerate: Eocene en echelon normal faulting and synrift sedimentation along the eastern flank of the Priest River metamorphic complex, northern Idaho". GSA Bulletin. 112 (9): 1356–1374. Bibcode:2000GSAB..112.1356D. doi:10.1130/0016-7606(2000)112<1356:GOTPTR>2.0.CO;2.