Density differs noticeably between unique rock types due to differences in mineralogy and porosity. Knowledge of the distribution of underground rock densities can assist in interpreting subsurface geologic composition and rock style. Metamorphism usually provides obvious layering, or banding, as a result of segregation of minerals into different bands. Metamorphic https://personalised-sweets03345.blogofchange.com/36948104/sticks-of-rock-options