Flow-banded obsidian, Oregon December 22, 2020/in /by Marli Miller https://geologypics.com/wp-content/uploads/2017/07/geology-pics.png 0 0 Marli Miller https://geologypics.com/wp-content/uploads/2017/07/geology-pics.png Marli Miller2020-12-22 03:26:442020-12-22 03:26:44Flow-banded obsidian, Oregon
