Density may differ noticeably between diverse rock sorts on account of variations in mineralogy and porosity. Knowledge of the distribution of underground rock densities can guide in interpreting subsurface geologic framework and rock kind. Metamorphism normally creates clear layering, or banding, due to the segregation of minerals into individual bands. https://arthurbshym.bloggazzo.com/35339368/the-2-minute-rule-for-sticks-of-rock