sentences:  1; p. 66-69
  
  B. C. Burchfiel, D. S. Cowan, and G. A. Davis, 1992, "Tectonic overview of the Cordilleran orogen in the western U. S.," in Burchfiel, B. C., Lipman, P. W., and Zoback, M. L., eds., The Cordilleran Orogen