Recent advances in our ability to resolve the P-T-t (pressure-temperature-time) paths of orogenic terranes have continued to re-emphasize the common marriage between petrology and tectonics. The importance of determining the P-T history of metamorphic rocks, as through chemical analysis of mineral zoning profiles and inclusions initially paved the way into this area of our science (e.g., Essene 1982, 1989; Hoisch 1991; Speer 1993). Parallel success has been demonstrated for igneous systems (see review by Anderson 1996), with the derived information being primarily related to ascent and/or cooling of the crystallizing...

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