What is basalt? Geology and Grindstones

By |2019-07-25T22:33:14-07:00May 24th, 2017|Architecture, Economy, Geology|Comments Off on What is basalt? Geology and Grindstones

A Roman road paved in basalt (This is from Trajan's Market in Rome) Basalt and volcanoes Basalt (bu-SALT) is a volcanic stone - it forms from the lava that volcanoes [...]