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Which of the following may be exceptions to the Law of Superposition?

thrust faults
fault blocks
dikes
lava
turbidites

thrust faults

fault blocks
dikes
turbidites

Did you know?

Did you know that thrust faults, fault blocks, dikes, lava, and turbidites may be exceptions to the Law of Superposition? The Law of Superposition states that in an undisturbed sequence of rocks, the oldest rocks are at the bottom and the youngest rocks are at the top. However, in cases where thrust faults occur, the older rocks may be pushed over younger rocks, causing an inversion of the rock layers. Fault blocks, which are sections of rock that have moved along a fault line, can also disrupt the order of rock layers. Dikes, which are vertical or near-vertical intrusions of magma into rock, can cut across existing layers, making them younger than the rocks they intrude. Lava flows from volcanic eruptions can also deposit new layers, disrupting the sequence of rocks. Lastly, turbidites, which are sediment deposits from underwater landslides, can form independent layers that may not follow the usual order. These exceptions highlight the complex nature of Earth's geological processes and remind us to consider various factors when interpreting rock layers.