Question

In which situation is the principle of cross-cutting relationships useful in determining relative age?

O A fault breaks through sedimentary layers.
O Fossils of two different species are found in different rock layers.
O Sedimentary layers form over millions of years in a lake bottom.
O Lava flows form on top of one another from several eruptions over time

Answer 1

A

Step-by-step explanation:

Answer 2

A fault breaks through sedimentary layers.

Step-by-step explanation:

The principle of cross-cutting relationships is useful in determining the relative age of rocks when fault breaks through sedimentary layers.

• This principle suggests that faults and fractures are younger than the layers they cut through.
• When a fault cuts through a sequence, its is younger than the faulting event.
• Therefore, we can use the relationship to determine the relative age of the sequence.