Simple Lithology

tephritic phonolite

definition Phonolitoid that has a plagioclase to total feldspar ratio between 0.1 and 0.5. Broadly corresponds to TAS tephriphonolite of TAS field U3. more like this
example tephriphonolite more like this
source LeMaitre et al. 2002 more like this
broader phonolitoid
narrower tephritic phonolite
in scheme simplelithology
is primary topic of tephritic phonolite