Metamorphics of Boundary Mine Road AZ

4 months ago
59

35.946564,-114.619234
After more reading on Migmatites, Mylonites, and Phyllonites I should start at the beginning and call any wavy layers due to plastic deformation shear as:

Ptygmatic (tig matik) Folds:
https://en.wikipedia.org/wiki/Fold_(geology)#Fold_types

And the video's tigmatic fold would be a migmatite(?) maybe:
Migmatite:
https://en.wikipedia.org/wiki/Migmatite

Variegated metamorphic rocks--Predominantly biotite-almandine gneiss and schist and garnetferous granite pegmatite, some rocks contain sillmanite or hornblende. Mostly segregated into bands of gray granite gneiss and schist a few feet to many tens of feet thick that alternate with bands of massive pink to white coarse to medium-grained mafic segregations. Locally mafic and siliceous segregations form nonbanded chaotic assemblages that appear to be highly disturbed fault blocks interspersed with biotite-almandine gneiss. Hornblende is common in mafic segregations but sparse in most gneiss. Includes some faintly foliated granite orthogneiss(?) in southern part of quadrangle.

Schistose and phyllitic rocks--Greenish-brown, greenish-gray, and gray banded to highly folliated biotite and biotite-hornblende schist, augen schist, and phyllonite.

Free KMZ older Geologic Map of the Black Canyon AZ for pinpointing on Google Earth:
https://ngmdb.usgs.gov/Prodesc/proddesc_10929.htm

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