Helmstaedt, H. and Schulze, D. 1977. Type A - Type C eclogite transition in a xenolith from the Moses Rock diatreme - further evidence for the presence of metamorphosed ophiolites beneath the Colorado Plateau. International Kimberlite Conference: Extended Abstracts. 2, 1 (Sep. 1977), 153–155. DOI:https://doi.org/10.29173/ikc973.