Pillar of gneiss (vertical)February 21, 2019/in /by Marli Miller erosion, foliation, metamorphic https://geologypics.com/wp-content/uploads/2017/04/geologic-time-pics-logo-300x115.png 0 0 Marli Miller https://geologypics.com/wp-content/uploads/2017/04/geologic-time-pics-logo-300x115.png Marli Miller2019-02-21 14:12:052019-02-21 14:12:45Pillar of gneiss (vertical)