Earth System and Principles of Earth History Quiz

In any sequence of undisturbed strata, the oldest layer is at the bottom and the youngest layer is at the top.

Sedimentary layers are deposited horizontally, parallel to the Earth's surface. If they are inclined steeply, it indicates deformation after initial deposition.

It states that strata extend continuously in all directions until terminated by something else.

<p>This principle implies that processes acting upon the Earth today have also operated in the geologic past, indicating an old Earth shaped by slow processes.</p> Signup and view all the answers