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The Younger Dryas debate spans climatology, archaeology, geology, and astrophysics, creating tension across multiple disciplines. There is scientific evidence
by farceSpherule 1y ago
The Younger Dryas debate spans climatology, archaeology, geology, and astrophysics, creating tension across multiple disciplines.
There is scientific evidence that the Younger Dryas event occurred, however, no universally accepted scientific study that conclusively proves WHAT caused it.
- cluckindan 1y agoThe Younger Dryas was not an ”event”, it was a period in Earth's geologic history that occurred circa 12,900 to 11,700 years Before Present (BP).
- deleted 1y ago[deleted]
- xeromal 1y agoIs the 0 point for Before Present a different year than the Jesus year? I've never heard it used before.
- Neekerer 1y agoIt's actually 1950 https://en.m.wikipedia.org/wiki/Before_Present?hl=en-US https://en.m.wikipedia.org/wiki/Before_Present?hl=en-US
- xeromal 1y agoThank you!
- AlotOfReading 1y agoIsh. It's technically correct for BP and radioisotope dating specifically, but other dating methods don't use the same scale like TL. You'll commonly see kiloanni (ka) used instead and that may or may not be referenced to 1950 depending on the whims of the author.
- IncreasePosts 1y agoThat's right around the time the "modern" era ended and "post-modern" began. Funny we've been making these errors since basically the beginning of time. Looking at you, New Bridge, the oldest bridge in Paris!
- Shadowmist 1y agoIt’s approximately 370 to 408 billion seconds before the Unix epoch.
- FrustratedMonky 1y agoKind of pedantic? I think everyone knows the debate is around the 'event', which caused a 'period' of geologic history which is referred to as "Younger Dryas". I guess once the 'event' is known, it can be named something, like "The Younger Dryas Event". What I'd like to know, is why just one event. There is this paper, and also the crater found in Greenland a couple years ago. Maybe there was a more general bombardment, not just a one-off smoking gone.
- protocolture 1y agoThere doesnt have to be an event. The current accepted theory is (from the gps wiki article) "is an alternative to the long-standing and widely accepted explanation that the Younger Dryas was caused by a significant reduction in, or shutdown of the North Atlantic Conveyor due to a sudden influx of freshwater from Lake Agassiz and deglaciation in North America."
- adastra22 1y agoI'm not sure what definition of "event" you are using. What you quoted is an event. Really anything that shows up as a spike in a chart on ANY timescale, is an "event." The word has broad meaning in the sciences.
- protocolture 1y agoThe person I am replying to is using event in the terms of "Something that caused" not "Thing that happened" and then goes on to further assume more airbursting asteroids. Yes a thing happened. But theres no need for a smoking space gun.
- FrustratedMonky 1y agoI literally said "why just one event". I don't know if it was asteroid or not, that is why there is controversy. How is "sudden influx of freshwater from Lake Agassiz and deglaciation in North America" not an event? As to the derision on asteroids, not sure why, considering we find evidence of them everywhere. Why not consider it as an option. Sorry if my memory is like everyone else's. When the Greenland Crater was found, there were 100's of articles linking it to Younger Dryas. It was dated later and discounted as being too old, that did NOT get 100's of articles, so was not widely known. I didn't realize it till this exchange.