what kind of rock is basalt

Basalt & Granite Rockery Stone Seattle Delivery This type of rock is widely used for terracing, garden walls, and borders. Many hillside properties in the Seattle area include basalt rockeries. Basalt - definition of basalt by The Free Dictionary basalt - the commonest type of solidified lava; ... and, picking up a piece of chalk-stone, advanced to a rock of black basalt, and traced the one word: Greenstone lava flows - Shenandoah National Park (U.S ... Greenstone lava flows. ... The lavas were originally composed of basalt, a black volcanic rock similar to those found in ... This type of rock is known as ...    Read More