Columnar joints in intrusive basalt, Oregon.April 30, 2017/in /by Marli Miller shallow instrusion, igneous, volcanic, RGO, 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 Miller2017-04-30 19:42:122022-02-05 02:10:12Columnar joints in intrusive basalt, Oregon.
