Answer:
The principle of original horizontality and lateral continuity
Step-by-step explanation:
The principle of original horizontality explains how sedimentary rocks are laid and arranged strategically in basins of deposition flatly and horizontally in space. It is very important when trying to determine the original orientation of strata in a sedimentary terrain. Sediments are laid in water under a strong influence of gravitational force.
The principle of lateral continuity shows that sediments are laid out laterally and parallel to one another until they thin or taper out on their edges. This shows the layered or stratified nature of sediments.