Flysch consists of repeated sedimentary cycles with upwards shale / mudstone.
2.
The first major change to global sedimentary cycling happened when humans started clearing land to grow crops.
3.
The largest of these sedimentary cycles can in some cases be correlated around the world with great confidence.
4.
This results in sedimentary cycles which in some cases can be correlated around the world with great confidence.
5.
An irregular rhythm is discernible, each sedimentary cycle is well developed and have banded or stippled beds at the base.
6.
For thousands of years there were too few dams to have a significant impact on global sedimentary cycles, except for local impacts on a few river deltas such as the Nile which were significant.
7.
Smaller and localised sedimentary cycles are not related to worldwide ( eustatic ) sea level changes but more to the supply of sediment to the adjacent regression, if the water depth is decreasing, the shoreline migrates seaward ( basinward ) and the previous shoreline is eroded.
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