SISSVoc Default


definition Foliated metamorphic rock with bands or lenticles rich in granular minerals alternating with bands or lenticles rich in minerals with a flaky or elongate prismatic habit. Mylonitic foliation or well developed, continuous schistosity (greater than 50 percent of the rock consists of grains participate in a planar or linear fabric) precludes classification with this concept. more like this
narrower original
broader gneiss original original
broader gneiss original
source Neuendorf et al. 2005 more like this
Resource original
Concept original
broader original
narrower gneiss original
in scheme simplelithology original
is primary topic of gneiss