Best thing to date such a sedimentary succession is to date by using magnetostratigraphy, as has been done in Siwalik (Himalaya) sediments. Fossils may be of much help. But how do you know so precisely that the fluvial succession is between 8-2 Ma of yrs. old?
Overburden and underlying successions were dated by mammal stratigraphy. I found the 26Al 10Be 21Ne burial dating method and I hope it will solve part of the problem.
Might I sugest starting with the CHART OF THE NUCLIDES. It has over three
thousand radioactive Parent and Daughter products and their decay rates.
It may or may not help your current quest, but it makes an interesting wall
decoration.
Alluvial sediments often carry a reliable magnetization, and magnetostratigraphy may yield good answers if the succession spans several million of years. For the late Miocene-Pliocene, 2-3 My may be sufficient.
Next, it is necessary to sample at regular intervals, hoping that these intervals do not exceed 50 kyr in time. This is in principle difficult to guess. Then, a general recommendation is to sample every fine grained layer in your alluvial sequence and end up with a large number of sampled horizonts (>100).
Hi Michal,
we started to do this in alluvial and aeolic deposits of Quaternary age (Vienna Basin, Slovakia) through OSL (Optical Simultaneous Luminiscence). In cooperation with the people from Texas, Germany and India. The results are particulary usable. For more information, see my e-mail.
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