SISSVoc Default


definition Mylonitic rock composed largely of fine-grained mica that imparts a sheen to foliation surfaces; may have flaser lamination, isoclinal folding, and deformed veins, which indicate significant shearing. Macroscopically resembles phyllite, but formed by mechanical degradation of initially coarser rock. more like this
source NADM metamorphic rock vocabulary SLTTm1.0; Marshak and Mitra 1988 more like this
Resource original
Concept original
broader original
narrower phyllonite original
in scheme simplelithology original
is primary topic of phyllonite