CD-ROM Working Group, Structure and Evolution of the Lithosphere Beneath the Rocky Mountains: Initial Results from the CD-ROM Experiment. GSA Today 12, #3, p. 4-10, 2002. [1]Archived 2012-03-29 at the Wayback Machine
Tweto, Ogden; Sims, Paul K. (1963). Precambrian Ancestry of the Colorado Mineral Belt.(abstract with link to PDF) (Report). Vol. Bulletin 74. Geological Society of America. pp. 991–1014. Retrieved 2014-03-02.
CD-ROM Working Group, Structure and Evolution of the Lithosphere Beneath the Rocky Mountains: Initial Results from the CD-ROM Experiment. GSA Today 12, #3, p. 4-10, 2002. [1]Archived 2012-03-29 at the Wayback Machine