Relative Age of Sandstone and Limestone Layers

Which rock layer is older, sandstone or limestone?

Is sandstone older than limestone or vice versa?

Answer

I think that limestone is older.

The age of sandstone and limestone can be determined using the Principle of Superposition. If a sandstone layer is found below a limestone layer, the sandstone is older.

The relative age of sandstone and limestone can be determined through the Principle of Superposition. This principle states that in a sequence of rock layers, the bottom layer is typically the oldest and the top layer is the youngest. Therefore, if a sandstone layer is found below a limestone layer, the sandstone is older than the limestone.

For example, let's say we have a rock formation where a sandstone layer rests on top of a limestone layer. This means that the limestone layer was deposited first, followed by the deposition of the sandstone layer on top of it.

In summary, if a sandstone layer is found above a limestone layer, it is younger. Conversely, if a sandstone layer is found below a limestone layer, it is older.