Thomas A. Vogel
Our group has been concentrating our recent effort on the origin of silicic magmas in oceanic arcs particularly in areas where there is no evolved continental crust. We have projects in Central America and the Philippines, and recently we have been working on the large volume silicic magmas from the Taupo Volcanic Zone in New Zealand. A basic question that these studies address is "what is the origin and evolution (petrogenesis) of these silicic magmas"? Answering this question will lead to a better understanding of the origin of the continental crust.
Deering, C. D., Cole, J. W., & Vogel, T. A., 2011, Extraction of crystal-poor rhyolite from a hornblende-bearing intermediate mush: a case study of the caldera-forming Matahina eruption, Okataina Volcanic Complex, Contributions to Mineralogy and Petrology, 161, 129-151, DOI 10.1007/s00410-010-0496-0.
Alvarado, G. E, Pérez, W., Vogel, T. A., Grüger, H. and Patiño, L. C., 2011, The Cerro Chopo basaltic center (Costa Rica): An unusual pyroclastic cone with abundant cannonball juvenile fragments and pervasive reverse-graded structure, J. Volcanology and Geothermal Research, 201, 163-177, doi:10.1016/j.jvolgeores.2010.11.010.
Deering, C. D., Vogel, T. A., Patino, L. C., Szymanski, D. W., Alvarado, G. E., 2011, Magmatic processes that generate chemically distinct silicic magmas in NW Costa Rica and the evolution of juvenile continental crust in oceanic arcs, Contributions to Mineralogy and Petrology, DOI 10.1007/s00410-011-0670-z.
Hidalgo, P. J., Vogel, T.A., Rooney, T. O., Currier, R., Layer, P., 2011, Origin of Silicic Volcanism in the Panamanian Arc: Evidence for a Two Stage Fractionation Process at El Valle Volcano, Contributions to Mineralogy and Petrology, DOI 10.1007/s00410-011-0643-2.