The consensus is that inter glacials occur every 100,000 years, or thereabouts. Not strictly true but never mind. That is the Milankovitch process adopted by mainstream. Interglacials, according to the theory, or what is dished out for the consumption of Joe Public, last around 10,000 to 15,000 years. This means the other 90,000 years are cold and inhospitable. Or does it? The accepted view of the last 100,000 years is interesting. The last interglacial period began around 125.000 years ago. John and Mary Gribbon, in their book, ‘Fire on Earth‘ New York:1996, have some interesting things to say on this period. The last ice age began around 115,000 years ago, when severe cold swept in. However, it only lasted for around 7,000 years, the cold weather easing off by 108,000 years ago. About 95,000 years ago it became very cold once again – but again this only lasted for a few thousand years. . It was not until 80,000 t0 70,000 years ago that the last Ice Age really kicked in. However, even in this period the cold was interrupted by warm periods. For instance, around 30,000 years ago. At this time there were centuries in which cold weather actually appears to have disappeared altogether. However, the warm episodes were then followed by the most severe part of the last ice age – the Late Glacial Maximum. This period lasted to around 15,000 years ago. Yet, the Milankovitch theory is still doggedly trotted out as fact, not fiction.
Francis Pryor, in his book, ‘Scenes from Prehistoric Life‘ Head of Zeus:2022, an archaeologist who follows the mainstream mantra all the way back to half a million years ago, regards gradual change rather than sudden change. For example, when discussing the discoveries at Boxgrove, 6 miles inland from Bognor Regis, he has a lot to say about the discovery of a buried former cliff line that has been traced for over 20 miles, and assumes it was simply a case of rising sea levels, not mentioning how it was possible to bury those cliffs and preserve them for posterity. Nearer to our day he discusses the Paviland burial on the Gower peninsular, and says the Devensian Ice Age lasted from 75,000 to 12,000 years ago. Pryor includes the Younger Dryas as part of that Ice Age which accounts for the difference with the Gribbins 15,000 years ago. He also makes the point that Ice Age glaciers came and went. Is the Milankovitch theory of Ice Ages still viable?