Inside the Subduction Factory. American Geophysical Union, Geophysical Monograph 138. John Eiler, Editor. Pp. 311 2003. Price $73. ISBN 0-87590-997-3.

Inside the Subduction Factory is a collection of 12 papers with implications for the so-called "andesite problem." This problem, as succinctly spelled out by John Eiler in his historical introduction, arises from two fundamental observations: (1) that continental crust is, on average, of andesitic composition and (2) that andesitic rocks are abundant in many magmatic arcs. The problem, thus, is creating rocks of continental composition from subducting slabs of oceanic composition. Not to spoil...

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