For many metamorphic petrologists, the study of low-grade metamorphic rocks is something of a black art. Because low-grade rocks are frequently fine-grained, contain a wide variety of low-temperature minerals with limited stability fields, and have high porosities and fluid contents they are not as readily understood as higher grade metamorphic rocks. For these rocks, few, if any, of the standard thermobarometers or thermobarometric datasets are applicable and the derivation of fluid evolution histories is complicated by the high concentration of, frequently reduced, fluids. Low-grade metamorphism, at T <400°C and P <4–5 kbar, spans the P–T interval between what...
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P.J. Treloar; Frey, M. and Robinson, D. (Eds) Low Grade Metamorphism.: Oxford (Blackwells Science), 1999, x + 313 pp. Price £44.50. ISBN 0-632-04756-9.. Mineralogical Magazine ; 64 (2): 365–366. doi:
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