If, in the year AD 1600, you had asked an educated European how old the planet Earth was and to recount its history he would have said that it was about 6000 years old and that its ancient history was given by the biblical account in Genesis.
If you asked the same question of an educated European in AD 1900 you would have received a quite different answer.
Exposure data thus obtained are 3400 ± 9 ± 1200 yrs respectively with an arithmetic mean of 4100 ± 1300 yrs.
Additional age data were acquired from post-depositional calcareous cements, which locally lithified the rockslide debris.
Thus the intensively structured present morphology, characterised by the well-known cone-shaped Toma-hills and several lakes in the depressions, is indicative of primary rockslide morphology and clearly not shaped by late-glacial ice as assumed formerly.
In part, these have been the result of natural factors, including the climatic changes of the Little Ice Age, and the Spörer and Maunder solar activity minima.
The story of this great change in the conception of the history of Earth is not a simple one.
The chronicle of this great change can be broken into five periods; ran from AD 1600-1700.
Three independent radiometric dating methods were applied to geologically individual sample sites and enabled a cross-checking of the results.At any particular time all living organisms have approximately the same ratio of carbon 12 to carbon 14 in their tissues.When an organism dies it ceases to replenish carbon in its tissues and the decay of carbon 14 to nitrogen 14 changes the ratio of carbon 12 to carbon 14.Close to the scarp-front, rockslide-dammed torrent deposits indicate a C minimum age of at least 3380–3080 cal. The chronostratigraphic base of this backwater sequence has not been dated yet, but is assumed to date somewhat older into the middle Holocene.However, this coincides with two cosmogenic radionuclide Cl ages of sliding planes at the steep and rugged scarp.