GLY 2010C Lecture Notes - Lecture 15: Shock Metamorphism, Metamorphic Zone, Mylonite
Document Summary
Minerals that serve as good indicators of metamorphic grade. (page 249) The region between two metamorphic isograds, typically named after an index mineral found within the region. (page 249) Metamorphism due only to the consequences of very deep burial. (page 250) Metamorphism that occurs as a consequence of shearing alone, with no change in temperature or pressure. (page 250) Rock formed during dynamic metamorphism and characterized by foliation that lies roughly parallel to the fault (shear zone) involved in the shearing process; mylonites have very fine grains formed by the nonbrittle subdivision of larger grains. (page 250) The region around a pluton, stretching tens to hundreds of meters out, in which heat transferred into the country rock and metamorphosed the country rock. (page 250) Metamorphism caused by heat conducted into country rock from an igneous intrusion. (page 250) Dynamothermal metamorphism; metamorphism of a broad region, usually the result of deep burial during an orogeny. (page 252)
