Geologic units containing phyllonite

Earth material > Tectonite

Phyllonite

A rock that macroscopically resembles phyllite but that is formed by mechanical degradation (mylonitization) of initially coarser rocks...

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Alabama

Jacksons Gap Group; Jacksons Gap Group undifferentiated in part (Precambrian to Paleozoic): Jacksons Gap Group undivided - principally graphitic sericite (muscovite)-quartz schist; includes sericite-quartz phyllonite; sericite phyllonite, blastomylonite, porphyroclastic blastomylonite schist, and mylonite quartzite occur principally along margins in south and form most of unit northeast of Jacksons Gap, Tallapoosa County.

North Carolina

Phyllite and Schist (Cambrian/Late Proterozoic): Phyllite and Schist - minor biotite and pyrite; includes phyllonite, sheared fine-grained metasediment and metavolcanic rock.
Phyllite and Schist (Cambrian/Late Proterozoic): Phyllite and Schist - includes phyllonite and interlayered biotite gneiss.
Phyllite and Schist (Cambrian/Late Proterozoic): Phyllite and Schist - locally laminated and pyritic; includes phyllonite, sheared fine-grained metasediment, and metavolcanic rock. In Lilesville granite aureole, includes hornfels.
Phyllite and Schist (Cambrian/Late Proterozoic): Phyllite and Schist - minor biotite and pyrite; includes phyllonite, sheared fine-grained metasediment and metavolcanic rock.
Rocks of Brevard Fault Zone (Uncertain, possibly Permian or Devonian): Rocks of Brevard Fault Zone - "fish scale" schist and phyllonite, graphitic; interlayered with feldspathic metasandstone, marble lenses.

South Carolina

Mylonitic rocks of Brevard fault zone (Late Paleozoic): Mylonitic and phyllonitic equivalents of Chauga River Formation and other adjacent rock units
Phyllonite and phyllonitic schist (Late Paleozoic): Phyllonite and phyllonitic schist

Virginia