Many of the records, she says, have a low resolution and there are no markers that can be dated at-or near-the time of the 4.2 ka bp event.
“What’s happened is that a lot of the records that are used to describe a global 4.2 event were not originally intended for this type of analysis,” says Stacy Carolin, a palaeoclimatologist at the University of Cambridge, UK. But if a stalagmite never had much uranium in the first place, or has been heavily contaminated with other substances, the dates become fuzzy. One of the best methods is uranium–thorium dating, which relies on the radioactive decay of uranium to thorium, and can give dates with an uncertainty as small as 1%. And it is not always possible to precisely date a climatic shift or event.
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There are a number of difficulties, including how to interpret the inherently indirect data from climate proxies.
2 But the U-Th dating method is built upon layers of uniformitarian assumptions and has been shown to be inaccurate.Įven the Nature article admits to some problems with accurately dating the timing of this event. This event from supposedly 4,200 years ago is based on U-Th dating on a stalagmite in Mawmluh Cave in the Meghalaya region of India and is also listed in the most recent International Commission on Stratigraphy update to the geological timescale as the start of the current age, the Meghalayan. A recent Nature article posed the question, “Did a mega drought topple empires 4,200 years ago?” 1 Although the date does not line up with biblical timelines, as there are problems with radiometric dating methods that have been discussed extensively on this website, we find close agreement with the famine mentioned in Genesis 41 during the time of Joseph’s release from prison and subsequent elevation to “second to Pharaoh” in Egypt.
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