Columnar-jointed basalt (vertical)September 25, 2018/in /by Marli Miller lava flow, cooling fractures, columns, columnar, colonnade 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 Miller2018-09-25 01:07:292022-02-05 02:06:58Columnar-jointed basalt (vertical)
