Deformed gabbro with pseudotachylyte (faulted) vein (black). Ivrea Verbano zone, Italy. PPL (plane polarized light) 2x (Field of view = 7mm). Pseudotachylyte are formed by frictional melting of the wall rocks during rapid fault movement associated with a seismic event. pic.twitter.com/o8eQVhJEkq
— Alexstrekeisen (@alexstrekeisen) August 21, 2020
via Twitter https://twitter.com/alexstrekeisen
August 21, 2020 at 04:55PM
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