01:460:100 Study Guide - Final Guide: Metamorphic Rock, Protolith, Kyanite

• School: Rutgers University
• Department: Geological Sciences
• Course: 01:460:100
• Professor: All

Document Summary

Metamorphism transformation into another form/mineralogy without going through a: replace original minerals, change texture, grains, and assortment of grains. Protolith a protolith is the original rock that a metamorphic rock stemmed from. A b (the protolith would be a) What causes metamorphisms: heat , break bonds, recrystallization. Rates of crystallization increase with higher temperatures: very high temp"s cause compositional banding. The main things affecting metamorphism are heat and pressure! Andalusite, kyanite, or sillmanite presence in a rock are used to index minerals baseline measurements to compare to others. Foliated vs. non-foliated: foliated is classified by composition, grain size, and foliation nature, from there, they are classified by either. Or preferred orientation -- the minerals align: non-foliated is classified by composition. Shale gneiss: after high p+t, shale forms into gneiss. Foliation is thin, parallel surfaces unrelated to bedding: metaconglomerate, slate, gneiss, are all foliated, foliation occurs because of compression. Cleavage planes example splitting slate along cleavage planes.