https://geologypics.com/wp-content/uploads/2017/04/geologic-time-pics-logo-300x115.png00Geology Picshttps://geologypics.com/wp-content/uploads/2017/04/geologic-time-pics-logo-300x115.pngGeology Pics2019-12-31 07:39:042022-02-05 02:06:40Columnar jointing in basaltic dike, Oregon
