Gibson, S.A., R.N. Thompson, P.T. Leat, M.A. Morrison, G.L. Hendry, and A.P. Dickin. “Ultrapotassic Magmas Along the Flanks of the Oligo-Miocene Rio Grande Rift, USA: Monitors of the Zone of Lithospheric Mantle Extension and Thinning Beneath a Continental Rift”. International Kimberlite Conference: Extended Abstracts 5 (February 1, 1991): 133–135. Accessed November 22, 2024. https://ikcabstracts.com/index.php/ikc/article/view/2489.