https://geologypics.com/wp-content/uploads/2017/04/geologic-time-pics-logo-300x115.png00Marli Millerhttps://geologypics.com/wp-content/uploads/2017/04/geologic-time-pics-logo-300x115.pngMarli Miller2017-04-30 19:34:212017-09-04 20:40:55Pegmatite dike in gneiss, Colorado.
