Selected Publications

Tuffen, H, and Castro, J.M. (in press) The emplacement of an obsidian dyke through thin ice: Hrafntinnuhryggur, Krafla Iceland, submitted to Journal of Volcanology and Geothermal Research, special issue on Volcano-ice interactions. [download PDF]

Castro, J.M., Beck, P., Tuffen, H., Nichols, A.R.L., Dingwell, D.B., and Martin, M.C. (2008) Timescales of spherulite crystallization in obsidian inferred from water concentration profiles. American Mineralogist 93: 1816-1822. [download PDF]

Castro, J.M. and Gardner, J.E. (2008) Did magma ascent rate control the explosive-effusive transition at the Inyo volcanic chain, California? Geology 36: 279-282; doi: 10.1130/G24453A.1. [download PDF]

Castro, J.M., Manga, M., and Martin, M.C., (2005) Vesiculation rates of obsidian domes inferred from H₂O concentration profiles. Geophysical Research Letters 32: L21307, doi:10.1029/2005GL02029.

Castro, J.M., Dingwell, D.B., Nichols, A.R.L., and Gardner, J.E., (2005) New insights on the origin of flow bands in obsidian. Geological Society of America Special Paper 396: 55-65.

Castro, J.M. and Mercer, C., (2004) Microlite textures and volatile contents of obsidian from the Inyo Volcanic Chain, California. Geophysical Research Letters 31: L18605, doi: 10.1029/2004GL020489.

Cañon-Tapia, E. and Castro, J.M., (2004) AMS measurements on obsidian from the Inyo Domes, CA: a comparison of magnetic and mineral preferred orientation fabrics. Journal of Volcanology and Geothermal Research 134: 169-182.

Castro, J.M., Cashman, K.V., and Manga, M. (2003) A technique for measuring 3D crystal size distributions of prismatic microlites in obsidian. American Mineralogist 88: 1230-1240.

Castro, J.M., Manga, M., and Cashman, K.V. (2002) Dynamics of obsidian flows inferred from microstructures: insights from microlite preferred orientations. Earth and Planetary Science Letters 199: 211-226.

Castro, J.M., Cashman, K.V., Joslin, N., Olmsted, B., (2002) Structural Constraints on the Origin of Large Cavities in the Big Obsidian Flow, Newberry National Monument, Oregon. Journal of Volcanology and Geothermal Research 114: 313-330.

Castro, J.M., Olmsted, B., and Joslin, N., (2000) Structural origin of large gas cavities in the Big Obsidian Flow, Newberry Volcano. In: Chitwood and Jensen, R. A. (Eds.) What's New at Newberry? Friends of the Pleistocene 8th annual field trip guidebook. p. 125-134.

Castro, J.M. and Cashman, K.V. (1999) Constraints on rheology of obsidian and pumice based on folds in obsidian lavas. Journal of Structural Geology 21: 807-819.

Manga, M., Castro, J.M., Cashman, K.V., and Loewenberg, M. (1998) Rheology of bubble-bearing magmas. Journal of Volcanology and Geothermal Research 87: 15-28.