Can you please elaborate on what clues about the timing and frequency, gave a timing of 10,000 years ago?
How can studying layers lead to the conclusion it fits 10,000 years ago and not 5,000 years ago?
Seems like a small difference, to me.
I have been reading that studies show radiocarbon dating is inaccurate, and can be out by 1,000 years and more.
Climate change also adds to inaccuracies.
I was doing some research on
Ice Core Data, and read that...
The weight above layers of ice, can make deeper layers of ice thin and these layers then flow outwards. This distortion of layers, would result is inaccurate data.
I also read
for the results of these tests to be useful in the reconstruction of palaeoenvironments, there has to be a way to determine the relationship between depth and age of the ice. The simplest approach is to count layers of ice that correspond to the original annual layers of snow, but this is not always possible. An alternative is to model the ice accumulation and flow to predict how long it takes a given snowfall to reach a particular depth. Another method is to correlate radionuclides or trace atmospheric gases with other timescales such as periodicities in the earth's orbital parameters.
A difficulty in ice core dating is that gases can diffuse through firn, so the ice at a given depth may be substantially older than the gases trapped in it. As a result, there are two chronologies for a given ice core: one for the ice, and one for the trapped gases. To determine the relationship between the two, models have been developed for the depth at which gases are trapped for a given location, but their predictions have not always proved reliable. At locations with very low snowfall, such as Vostok, the uncertainty in the difference between ages of ice and gas can be over 1,000 years.
Radiocarbon dating is also used.
So, there is the possibility for the dating to be inaccurate.
If the last glacial period was about 5,000 years ago, how would you know that by comparison with other events?
Would you consider, or approximately 4,500 years ago considering the above?