Exploring Cross-Cutting Fault Lines

What is the primary focus of the fault line XY in the geologic sequence?

• It indicates the presence of a river.

• It shows the impact of an earthquake.

• It marks the boundary between two countries.

• It highlights the oldest rock layer.

Which rock layer is the oldest in the sequence?

• Layer D

• Layer G

• Layer E

• Layer F

What event must have occurred after the deposition of layers G, F, E, and D?

• Uplift

• Weathering

• Folding

• Erosion

Why is igneous intrusion A considered younger than layers D, F, E, and G?

• It is made of a different material.

• It is not affected by weathering.

• It cross-cuts these layers.

• It is found at the top of the sequence.

What evidence suggests that folding occurred before the formation of igneous intrusion A?

• The layers are not affected by the intrusion.

• The intrusion cross-cuts the folded layers.

• The intrusion is folded.

• The layers are horizontal.

Which layers were disrupted by the earthquake?

• Only igneous intrusion A

• Layers D, F, E, and G

• Only layers E and G

• Only layers D and F

What happened to igneous intrusion A during the earthquake?

• It was eroded.

• It remained unaffected.

• It was disrupted.

• It was uplifted.

Which rock unit was deposited immediately after the earthquake?

• Rock unit C

• Rock unit B

• Rock unit D

• Rock unit A

What is the youngest rock unit in the sequence?

• Rock unit C

• Rock unit B

• Rock unit A

• Rock unit D

What caused the upper boundary of layer B to be wavy?

• Deposition

• Folding

• Erosion and weathering

• Earthquake