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More model informationMylonitic gneiss with boudinage and stretched veins; a non-mylonitic augen gneiss (see an example of a non-mylonitic gneiss here) is located just a few tens of meters north of this outcrop. Mylonites form at the edges of basement nappes, whereas the nappe interior is less deformed. Mattmark Dam, Valais, Switzerland. Model is about 1 m across and part of a much larger outcrop. Lat 46° 2‘29.03”N, Lon 7°57‘12.83”E, elevation 2248 m.
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Apr 15th 2020
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