7. Refer to Figure 1. Which of the following is true regarding the age of motion

Question

7. Refer to Figure 1. Which of the following is true regarding the age of motion on the fault?

(1) it is younger than Cretaceous

(2) it is Precambrian in age

(3) it is older than Devonian

(4) it is older than Ordovician and younger than Silurian

Figure 1 shows a cross-section (a vertical cut through the Earth) of several layers that have undergone several geological events, including, faulting, intrusion by dikes, erosion, deposition of sedimentary layers, etc. (not neccessarily in this order). Names such as Ordovician, Siliurian, Devonian, etc. refer to time periods in the Geologic Time Scale (see book) Cretaceous shale & sandstone Cretaceous conglomerate Precambrian granite Precambrian granite

Explanation / Answer

5th option.

Beacuse , by principle of cross cutting relation fault is not cutting Cretaceous conglomerate which means fault is older. But it cut Devonian, which means fault is younger than Devonian.

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