Solution

ID: past-exam-of-the-year-2-of-the-earth-sciences-geology-course-of-the-university-of-oxford/2022/paper-1/4/d/ii/solution

A useful deflected stream is the conspicuous incised drainage in the right-hand part of the image. It approaches the fault corridor from the upper-right, follows a short segment along the trace near , then resumes down the fan toward the lower-left. Mark the two bends and the intervening along-fault reach, rather than labeling the whole channel as a fault.
A candidate beheaded stream is the short downstream gully in the fan immediately to the right of the central wide river, near : its head terminates at or near the cross-cutting fault corridor without an obvious continuation into a substantial upstream catchment. Mark it as a candidate abandoned/cut-off channel, and distinguish it from the active continuous drainage farther right. A displaced upstream counterpart, sediment infill or a field profile would strengthen that identification; optical appearance alone cannot uniquely establish every former channel connection.

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