Helmstaedt, H.H., and Schulze, D.J., 1991, Early to mid-Tertiary inverted gradient under the Colorado Plateau: Evidence from eclogite xenoliths in ultramafic microbreccias, Navajo Volcanic Field: Journal of Geophysical Research, v. 96, no. B8, p. 13,225-13,235.
Journal of Geophysical Research, v. 96, no. B8, p. 13,225-13,235.
Ultramafic, Xenoliths, Igneous Petrology, Geochemical Survey, Diatreme, Plate Tectonics, Laramide, Cretaceous, Paleocene,