Büchel, Georg, Michael Ort, Volker Lorenz, and Nancy Riggs. “Structural Analysis of Active Quarries in the Quaternary Western Eifel Volcanic Field and Their Relevance for the Formation of Diatremes”. International Kimberlite Conference: Extended Abstracts 12 (July 8, 2024). Accessed November 21, 2024. https://ikcabstracts.com/index.php/ikc/article/view/4076.