The principle of superposition states that in an undeformed sequence of sedimentary rocks, younger rocks are deposited on top of older rocks. This principle helps geologists determine the relative ages of rock layers
Group I | Group II |
P. Sillimanite | 1. First order |
Q. Quartz | 2. Second order |
R. Muscovite | 3. Greater than third order |
S. Calcite | 4. Third order variegated |