This principle suggests that all rock layers are originally laid down (deposited) horizontally and can later be deformed. This allows us to infer that something must have happened to the rocks to make...

Extracted text: This principle suggests that all rock layers are originally laid down (deposited) horizontally and can later be deformed. This allows us to infer that something must have happened to the rocks to make them tilted. This includes mountain building events, earthquakes, and faulting. The law of lateral continuity The law of relative dating The law of superposition The law of original horizontality O The law of cross-cutting