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"bubbles" in igneous rock are extremely common. The gas comes from inside the planet. Some rock, like pumice, is almost all bubbles.
Space/Science » in reply to And now, back to Spirit and the 'Adirondack Rock'!
Space/Science » in reply to And now, back to Spirit and the 'Adirondack Rock'!
"bubbles" in igneous rock are extremely common. The gas comes from inside the planet. Some rock, like pumice, is almost all bubbles.