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 5 synonyms, antonyms, idiomatic expressions, and related words for basalt, like: pahoehoe, porphyry, rubblestone, sarsen and tufa.