Posted on 04/29/2017 11:12:05 AM PDT by GraceG
The Quaternary glaciation, also known as the Pleistocene glaciation or the current ice age, is a series of glacial events separated by interglacial events during the Quaternary period from 2.58 Ma (million years ago) to present.
In popular culture, there is often reference to "the next ice age".[24] Technically, because Earth is already in an ice age at present, this usually refers to the next glacial period (because the Earth is currently in an interglacial period).
I had a geology professor whose “tongue-in-cheek” comment regarding interglacial periods -”That’s when civilization happens!”
Of course. The glaciers start at mountains. Sierra Nevada, Cascades and Rocky Mountains. From there they head east and eventually stop up near Hudson Bay and the Great Lakes. There is not enough water vapor up near Hudson Bay to build glaciers quickly to travel south. Too cold. Now west of these mountains you get catastrophic rains and flooding which carved out the central basin of California. Its all right there on the map. History of North America carved into stone. The glaciers recede into Canada due to the warming pattern and lack of rain at the end of the interglacial period.
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Massive BARF!
The Ice Age was the result of the hot ocean water that erupted from “the Great Deep” during the Genesis judgement.
Glaciation can only occur when the ocean is hot, just as drought occurs when it is cool. Only an extremely hot ocean can generate sufficient precipitation to build a glacier.
This is the 10,000 pound elephant in the laboratory of the warmists.
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BTW, don’t be a Wikipedophile!
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And the dark medieval period was really the enlightened time. Yes the coming Ice Age will make puny humans think they are not god like, but unfortunately most are going insane right now due to other non natural factors. Its all part of the never ending story that keeps repeating.
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Nothing is “interglacial.”
There has been only one “ice age.”
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LOL!
During glacial stages, the temperature was low and ice extended far away from the poles. During interglacials, the temperature was somewhat warmer and the ice retreated.Neanderthals, with whom we shared the planet until just before the last glacial maximum, 20,000 years ago, ...
Twelve thousand years ago, the great ice sheets retreated at the beginning of the latest interglacial the Flandrian allowing humans to return to northern latitudes.
Stadials and interstadials are similar cycles but not as definite.
Brief, inconclusive periods of advancing ice typically lasting less than 10,000 years are called stadials; conversely, periods when the ice retreated, but only briefly, are called interstadials.
Exactly. Thanks for bringing that up. A messianic jew friend of mine told me about the great deep eruption. But he also pointed out numerous translation problems when converted scripture into English. From my half scientist half creationist point of view, a long El Nino lasting hundreds of years is a plausible physical mechanism to build glaciers. And if you understand what El Nino actually represents, the transfer of solar energy into water vapor, it makes sense. The Pacific is cooling during an El Nino. And for those who are 100 % creationists, god and physics are not mutually exclusive. They are one and the same.
Yeah it gets confusing when they talk about periods within a glacial time and periods outside a glacial time. Irrelavent to me, but thanks for any corrections.
It was far less glacial back in Viking days when they sailed from there to Newfoundland.
It’s not that complicated. It has all been an “Ice Age” for the last 2.58 million years. When glaciers advance and ice caps increase well into temperate latitudes that’s a “glacial period.” When glaciers retreat and ice caps are reduced to within the Arctic and Antarctic circles of latitudes that’s an “interglacial period.”
There is not enough water unless the Arctic ice melts to a greater degree. The evaporation from the ice free Arctic Ocean spreads precipitation into the Canadian Arctic which accumulates and spreads as a continental glacier.
During the last glaciation the Laurentide Ice Sheet formed in the N.E of Canada and the Canadian Arctic Archipelago Spreading West and South to the continental divide. The Cordilleran ice sheet formed to the West of the continental divide. The greater areas of the Sierra Nevada and the Rocky Mountains were south of the continental ice sheets though they had their own extensive glacier systems.
Not complicated. Just confusing as typical for ape work. Lol. So during the Quaternary Glaciation, we have glacial periods and interglacial periods. Within these periods we also have short stadial pulses. These stadial pulses are not glacial or interglacial periods. Stadials can be the opposite of the glacial periods. So basically the stadials are oddballs and tend to be caused by volcanic eruptions or large asteroid hits. At least the cold ones. Have no clue as to what can cause warm stadials.
There have been many “ice ages” or times of periodic continental glaciation. At the end of the Permian there was a world-wide glaciation that has been dubbed “Snow Ball Earth”. Whether it truly was pole to equator to pole glaciation is still much debated. As the original post stated the Quaternary where we are in the Holocene lull is defined as active period of intercontinental glaciation. I think the Wikipedia article states it as “ the Quaternary is defined by cyclic growth and decay of continental ice sheets driven by the Milankovitch cycles”. Notice the plural in “sheets” and “cycles”, so more then one!
However you are right to point that “ice age “is a poor descriptor!
That cannot occur on a cooling planet. That is the key. Temperatures fall everywhere.
Yes, that’s pretty much it as I understand the terms. They are just descriptive phrases for oscillations of different magnitudes. Glacial and interglacial denote the major oscillations and stadial and interstadial describe the minor ones.
Astrophysics is the primary driver, but another component is required. The interglacials vary in width. So another component triggers the fall in temperatures. We are in that period right now. That component is at work and getting stronger every day. Unfortunately the hairy apes wont let us talk about their warts. All we can do is watch em go nuts. Dont let their wickedness drag you down into the abyss. There ya go, half science half creation.
Yes I’ve read the “The Chilling Stars” a compelling book but obviously not the whole story.
Manbearpig!
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