Density varies appreciably amongst distinctive rock styles thanks to distinctions in mineralogy and porosity. Knowledge of the distribution of underground rock densities can help in interpreting subsurface geologic structure and rock type. Basalt is, generally, an extrusive igneous rock which can exhibit a substantial variation in porosity (due to the https://rock-sticks89011.dailyblogzz.com/36844149/what-does-sticks-of-rock-mean