Whiteschist This is a photomicrograph of a high-pressure schist from the famour Dora Maira massif in Italy. The region of coarser-grained quartz in the upper center portion of this photomicrograph was probably originally occopied by coesite, the high-pressure polymorph of quartz. Metamorphic rocks from the Dora Maira Massif show other evidence of being exhumed from EXTREMELY deep levels in thickened crust (>28 kbar), including... |
UNC sample TS-42 (K. Stewart) | |
Rock type qtz-ky-gt-musc schist | ||
Locality Dora Maira Massif, Parigi, Italy | ||