Granite belongs to magmatic rocks. At present, on the earth, we can still see the liquid magma with the temperature as high as 1000℃ after volcanic eruption, and the hard rock formed after cooling. Magmatic rocks are formed underground, so they are not widely distributed on the surface and are generally buried deep underground.
Basalt is a kind of rock with dense or foam structure, which is solidified by volcanic magma after cooling. Belongs to magmatic rocks. Basalt is generally black, sometimes grayish green and deep purple. Its particles are fine and spot-shaped, among which stomatal structure and almond-shaped structure are common.