By: shelley-jaye
Image: Credit: Callan Bentley, Mid-Atlantic Geo-Image Collection (M.A.G.I.C.) on GigaPan. CC BY Attribution 3.0 ⧉
License: Creative Commons Attribution ⧉

Uploaded: 7 Jan 2020
Last Updated: 15 Jan 2020

320 megapixels
22,176 x 14,424 pixels
73.9 in X 48.1 in at 300dpi
3,923 pixels per inch

Very large garnet crystals (porphyroblasts) formed by changes in temperature and pressure deep within the crust during mountain building accompanied by regional metamorphism. From Wrangell, Alaska.

By: shelley-jaye
Image: Credit: Robin Rohrback, Mid-Atlantic Geo-Image Collection (M.A.G.I.C.) on GigaPan. CC BY Attribution 3.0 ⧉
License: Creative Commons Attribution ⧉

Uploaded: 13 Jan 2020
Last Updated: 16 Jan 2020

1.48 gigapixels
49,332 x 29,916 pixels
164.4 in X 99.7 in at 300dpi
6,056 pixels per inch

Schist from the Great Unconformity in Wind River Canyon, Wyoming. Wind River Canyon (where the Wind River cuts across the Owl Creek Mountains in central Wyoming), exposes a classic example of "the great unconformity" (separating Precambrian from Paleozoic). To see the outcrop where this schist was collected, click here: http://gigapan.com/gigapans/136109