One of several large masses of silicified sandstone or conglomerate found on or near the ground surface in England and Brittany and believed to be the erosional remains of a sedimentary bed deposited during the Tertiary Period. These masses were used by Neolithic peoples as monoliths.
A soft, friable, and porous sedimentary rock consisting of calcium carbonate and formed by the evaporation of water, especially at the mouth of a hot spring or on a drying lakebed. It can also be precipitated by algae or bacteria.
Find another word for basalt. In this page you can discover 21 synonyms, antonyms, idiomatic expressions, and related words for basalt, like: pahoehoe, porphyry, rubblestone, sarsen, tufa, basaltic, quartzite, gneiss, schist, gabbro and dolerite.