Obsidian and pumice (vertical) December 22, 2020/in /by Marli Miller flow-banding 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 03:26:392020-12-22 03:27:24Obsidian and pumice (vertical)
