Sample 57660 is Paleozoic sandstone-conglomerate from Mount Seldom Seen, Vic. The largest clast in the sample is ~50 mm across and the average clast size is ~10 mm. The sample also shows imbrication of clasts. Based on these and your own observations choose the correct statements below (there is more than one correct answer).

Question

Sample 57660 is Paleozoic sandstone-conglomerate from Mount Seldom Seen, Vic.  The largest clast in the sample is ~50 mm across and the average clast size is ~10 mm.  The sample also shows imbrication of clasts.  Based on these and your own observations choose the correct statements below (there is more than one correct answer).

Accepted Answer

In reference to the photograph of this sample provided in Moodle, the paleocurrent direction was from left to right

Accepted Answer

The largest clasts would have required a current of ~400 cm/s to be eroded and the average sized particles would have required a current of ~120 cm/s

Accepted Answer

The largest clast would have started to settle when the current slowed down to ~80 cm/s.  The average sized clasts would have started to sediment at ~30 cm/s

Answer

The largest clasts would have required a current of ~700 cm/s to be eroded and the average sized particles would have required a current of ~12 cm/s

Answer

In reference to the photograph of this sample provided in Moodle, the paleocurrent was from bottom to top

Answer

The largest clast would have started to settle when the current slowed down to ~400 cm/s.  The average sized clasts would have started to sediment at ~80 cm/s

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Sample 57660 is Paleozoic sandstone-conglomerate from Mount Seldom Seen, Vic. T...

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