Refoliated (polymetamorphic) gneiss: Note the older gneissic banding (with some swells probably due to replacement) cut by and dragged along the new shear surfaces trending from lower left to upper right.
Dates
Date Taken
1932
Summary
Refoliated (polymetamorphic) gneiss: Note the older gneissic banding (with some swells probably due to replacement) cut by and dragged along the new shear surfaces trending from lower left to upper right. "Umfaltungsclivage." one mile north of Chico Shunie village. Pima County, Arizona. 1932. Plate 5-D, in U.S.Geological Survey Professional paper 209. 1946.
Summary
Refoliated (polymetamorphic) gneiss: Note the older gneissic banding (with some swells probably due to replacement) cut by and dragged along the new shear surfaces trending from lower left to upper right. "Umfaltungsclivage." one mile north of Chico Shunie village. Pima County, Arizona. 1932. Plate 5-D, in U.S.Geological Survey Professional paper 209. 1946.
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