deSilva, Shanaka, Eichelberger, J. C., Chertkoff, D. G., Dreher, S. T., and Nye, C. J., 2001, Magmas in collision: rethinking chemical zonation in silicic magmas: discussion and reply: Geology, v. 29, n. 11, Boulder, CO, Geological Society of America, p. 1063-1064.
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