[DannyTN]

Sedimention experiments

[b_sharp]

I'm not sure what this has to do with varves, the deposition is in a different context and there is no mention of annual processes. You seem to have glossed over the diatomes and pollen found in varves to verify the seasonality of them. Why is that?

As far as stratification of the Grand Canyon is concerned, this has no impact on the identification of layers of different composition found there. Remember that not only has the strata been dated, they are made up of different types of rock, including igneous and metamorphic, as well as sedimentary as shown in your link.