By: magic-gigapans
Image: Callan Bentley, Mid-Atlantic Geo-Image Collection
License: Creative Commons Non Commercial ⧉

Uploaded: 12 May 2020
Last Updated: 3 Jun 2020

665 megapixels
31,350 x 21,207 pixels
104.5 in X 70.7 in at 300dpi
5,581 pixels per inch

This fold comes to Team M.A.G.I.C. from Bill Burton of the USGS in Reston, Virginia. Bill says it's "Sample VV-120, NW corner of marble quarry in South Wallingford, VT (don't have quarry name). Interlayered marble and phyllite, strongly deformed in Taconian orogeny and probably Acadian as well. Unclear how much shear in planar layers because calcite annealed, but style of outcrop-to map-scale deformation is strong ductile folding, even though only at biotite grade, vs discrete shear zones."