Greg
Harper in the field in the Cascades; outcrop in the Ingalls Ophiolite.
For details see: Metzger, E., Harper, G.D., and Miller, R.B., 2002. Geochemistry and tectonic setting of the ophiolitic Ingalls Complex, North Cascades, Washington: Implications for correlations of Jurassic Cordilleran ophiolites. J. Geol., 110, 543-560.