Andros Island is an archipelago within the Bahamas, the largest of the 26 inhabited Bahamian Islands.
Basalt (pronounced /bÉËsÉËlt/, /ËbÃ¦sÉlt/, /ËbÃ¦sÉËlt/, or /ËbeÉªsÉËlt/) is a common extrusive igneous (volcanic) rock formed from the rapid cooling of basaltic lava exposed at or very near the surface of a planet or moon. Flood basalt describes the formation in a series of lava basalt flows.
Basalt is dark rock, gray or black on a freshly broken surface, and weathers brown or red, because it contains lots of dark-colored minerals. Some basalt contains light-colored crystals. Dacite and andesite are medium in color, and contains medium amounts of dark minerals. Rhyolite is the lightest colored volcanic rock.