By: nova-an-slc
Image: Robin Rohrback, Mid-Atlantic Geo-Image Collection
License: Creative Commons Non Commercial ⧉

Uploaded: 8 Jan 2021
Last Updated: 25 Jan 2021

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Basalt is gabbro's fine-grained extrusive counterpart. Basalts usually harden from lava flows and may contain gas cavities called vesicles.