Will choose which two layers are approximately the same age?

the bottom two are the same age

Here you have two pictures of a piece of core.

You don't know the composition, but you have different draws on the kind of substances on each layer.

Comparing all the layers, the only one that matches on each core is the deep blue with yellow shells.

On core sample 1 is the third from the top, on core sample 2 is the first from the top.