Question

As per hutton's unconformity, what happened to the intermediate layers of rock?

Answer 1

they eroded away

Look at the rock layers pictured below   Figure below  ; they show a feature called Huttons unconformity. The unconformity was discovered by James Hutton in the 1700s. Hutton saw that the lower rock layers are very old. The upper layers are much younger. There are no layers in between the ancient and recent layers. Hutton thought that the intermediate rock layers eroded away before the more recent rock layers were deposited.