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[–] Thisismyvoatusername 0 points 1 points (+1|-0) ago 

Since the unconformities between the megasequences seem to show mainly only sheet eroision, there must have been only short time spans of days, weeks or months between each megasequence deposit.

This doesn't really seem a strong position and it is the crux of the entire argument as near as I can tell.

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[–] littul_kitton 0 points 1 points (+1|-0) ago 

It's a very week argument. If a stratum is above the water level, it will usually erode. If it falls below the water level, sediment will usually build up. All we need to produce unconformities is for the relative position of the rock and water level to change rapidly. The evidence for such changes is pretty strong: volcanic damming, tectonic damming, ice sheet freezing and melting, etc.