Geologic Time and Evidence of Evolution

Which is older G or I?

Layers I, H, and G are horizontal and undisturbed. Which principle of relative age dating can you use to date them?

Which is older E or B?

Layers A, B, C, D, L, E, and M were not always tilted. Which principle of relative age dating do you use to explain this?

Which is older intrusion F or layer D?

Intrusions are younger than layers they pass through. Which principle of relative age dating do you use to explain this?

Layers M and I contain gravel inclusions. Which is older the rock layer or the inclusions?

Which principle of relative age dating do you use to explain why pieces of other rock included in a layer of rock are older than the layer that contains them?

Layer H the Bright Angel Shale can be seen on both sides of the Grand Canyon. Which principle of relative age dating do you use to explain this?

Write the sequence of rock layers and geologic events in order from oldest to youngest. Capitol letters no spaces or commas.

The arrows labeled S and R, are pointing to two surfaces where rock layers were lost to erosion. What are these called?

Geologists can find out which layers were lost by using the process of ___________________.

Processes like erosion and plate tectonics that we can observe and measure today have occurred all throughout Earth's history. Therefore Earth's history is very long. This is the principle of ______________.

Which layers are missing in Location 3? (all capitol letters, no spaces)

Which organism lived for the shortest amount of time?