When did rock layer H form relative to the other rock layers? In your answers, compare layer H to as many rock layers as you can.

Rock layer H is an igneous intrusion. It goes through layer E and all the layers beneath it, except layer J. So, layer H formed after layer E started to form and is younger than all the layers beneath it, with one exception. Igneous intrusion J cuts through layer H, so layer J is younger than layer H. Because the intrusion does not go through layer G, it formed before layer G. From the drawing, it can't be determined whether layer H is older or younger than layer A.