Question

geologists use tools other than the law of superposition to help them with relative dating. which statements describe those tools? check all that apply. an unconformity is created when lava pours out on earths surface. faults are the result of volcanic activity. intrusions and extrusions are sedimentary formations. cross - cutting features are always younger than the surrounding rock. when material erodes before sediment is deposited on it, a geologic gap results.

Explanation:

• Cross - cutting relationships is a key relative dating principle. A feature that cuts across rock layers is younger than the layers it cuts through.
• Erosion removing material before new sediment deposition creates an unconformity (geologic gap), which helps in relative dating by showing a break in the geologic record.
• An unconformity is not just created by lava pouring out (A is wrong). Faults are due to tectonic stress, not volcanic activity (B is wrong). Intrusions and extrusions are igneous, not sedimentary formations (C is wrong).

Answer:

• D. Cross - cutting features are always younger than the surrounding rock.
• E. When material erodes before sediment is deposited on it, a geologic gap results.