Relative Age Of Rock Layers Worksheet. Then students will use a rock layer diagram to determine what rock materials are older or younger. Sedimentary rock will first form horizontal layers.
Relative age of magmatic and metamorphic rocks is determined according to their relation with sedimentary rocks. Then students will use a rock layer diagram to determine what rock materials are older or younger. Using geologic dating principles and fossils preserved in the layers, the ages of each layer have been established. !
Magma that cools and hardens into a igneous rock.
In horizontal sedimentary rock layers the oldest layer is at the bottom.
Clues from Faults A fault is a break in Earth's crust usually caused by geologic forces. Look A geologist working on a map must also decide the relative ages of the rock units using the. Each higher layer is younger than the layers below it. extrusion.