Hall, D. C., H. Helmstaedt, and D. J. Schulze. “The Cross Diatreme: A Kimberlite in a Young Orogenic Belt”. International Kimberlite Conference: Extended Abstracts 4, no. 1 (September 19, 1986): 30–32. Accessed May 3, 2024. https://ikcabstracts.com/index.php/ikc/article/view/1063.