In this way, they make up a sedimentary rock for the second time.

Other sedimentary rock in the area formed more recently, around 20 million years ago.

In fact, the sedimentary rock seemed to give way to actual ice now, ahead.

Additional sedimentary rock was formed more recently, around 20 million years ago.

This tells us nothing about sedimentary rocks in the real world.

Here sedimentary rock can be found folding over the Shield.

These sedimentary rocks were deposited from 650 to 290 million years ago.

Less is found in the sedimentary rocks underlying central Connecticut.

Some specimens have been picked up that were definitely sedimentary rock.

According to seismologists, these are caused by the movement of water through sedimentary rock.