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 Earth’s 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.

A cross-cutting feature, such as a fault or an igneous intrusion, formed after the rock layers it cuts through, so it is younger than the surrounding rock. When older material is eroded and sediment is later deposited over it, some geologic time is missing from the record; this gap is an unconformity. Lava forming at the surface is an extrusion, not the definition of an unconformity, and intrusions and extrusions are igneous rather than sedimentary formations.

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