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

Uploaded: 29 Apr 2020
Last Updated: 2 Jun 2020

1.19 gigapixels
85,824 x 13,820 pixels
286.1 in X 46.1 in at 300dpi
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44.649928, -108.198165 - Facing 360* The truck roughly marks the northern heading. This is an excellent view of the succession from the Triassic Gypsum Springs Formation (The white rim around the valley bottom) through the Permian Phosphoria Formation (The heavily fractured white limestone and dolostone of the hinge). Inbetween, the distinctive red shales and siltstones of the Triassic Chugwater Formation form the valley floor between the Gypsum Springs and the slightly more competent Dinwoody Formation - the recessive grey/white mass of heavily deformed gypsum and dolostone overlying the Phosphoria, visible at the base of the nose. The anticlinal nose plunges into the ground here at an angle of around 20 to 30 degrees at its base. It's corresponding (unnamed) syncline can be seen to the north-east, bringing the plunging beds back from beneath the ground into another large-scale anticlinal structure: The Spence Dome.