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Given the number of geographically-specific names (Wisconsinian and Vistula can be added to the list in the article), would it make sense to move the article to Ice Age or The Ice Age? 68.81.231.127 19:01, 21 Jan 2005 (UTC)
I am inclined to move this article to The last ice age in view of the various names for it in this article. Comments? Abtract 18:16, 21 October 2007 (UTC)
The present article is somewhat inconsistently expressed in years Before Christ. Years Before Present, with a "Present" permanently fixed at 1950, reflects the best normal practice, however. ( Wetman 08:54, 28 September 2005 (UTC))
It appears that this is a BC article from the history and as above. Some editors have added dates from BCE so mixing up the usage in the article. There were 2 instances of BCE use and 4 instances of BC use so why was the article harmonised on 4th Nov by altering the BC labels rather than the BCE ones?-- Muirofsara ( talk) 11:18, 30 December 2019 (UTC)
Um, how is it that the "general glacial advance began about 70,000 BC" but "The Tahoe reached its maximum extent perhaps about 70,000 years ago" [i.e., 68,000 BC] Did those early glaciers really gallop?
I found this page while looking for more info on a passing comment by Richard Dawkins (The Ancestor's Tale, pg 405): “... guessing that our ancestors, but not the chimpanzees’, passed through a genetic bottleneck not very long ago. The population was reduced to a small number, came close to going extinct, but just pulled through. There is evidence of a fierce bottleneck - perhaps down to a population of 15,000 some 70,000 years ago, caused by a six-year ‘volcanic winter’ followed by a thousand-year ice age. Like the children of Noah in the myth, we are all descended from this small population, and that is why we are so genetically uniform. Similar evidence, of even greater genetic uniformity, suggests that cheetahs passed through an even narrower bottleneck more recently, around the end of the last Ice Age.” Dawkins does not provide footnotes or endnotes, so I can't provide his sources, but the apparent contradiction with Wiki's summary is striking.
There is nothing in this article on
I'm not the one to attempt this summary. 134.121.64.253 02:11, 14 January 2006 (UTC)
The intro says, "The general glacial advance ... reached its maximum extent about 18,000 BCE." Later the article says "The Tioga was the least severe ... of the Wisconsinan group and reached its greatest advance 20,000 years ago". If the Tioga was the least severe one would expect the maximum for the whole period would have been in the Tahoe or Tenaya periods more than 30,000 years ago. Either some change or some explanation required.
Secondly, the first sentence says, "The Wisconsin ... and Würm glaciation ... are the most recent glaciations ...". If (as it seems to me) this is one glaciation with many names (and several periods), shouldn't it read, "... is the most recent glaciation ...". Otherwise, if it is many glaciations, shouldn't it read, "The Wisconsin ... and Würm glaciations ..."? Nurg 03:16, 5 November 2006 (UTC)
I think the name of this article is a bit misleading. The last ice age is technically the Karoo Ice Age. Technically, again, we're still in an ice age, referred to as the Quaternary glaciation, host to the many familiar glacials and interglacials. I think it would be most prudent, so as not to confuse the readers, to rename the article to Last glacial or Last glacial period (prefer the latter). If you explain in the article that, colloquially, "ice age" is sometimes used to refer to the period ice advances, but "glacial" is a more correct term to use, then this will be less confusing for the reader. ~ UBeR ( talk) 21:19, 16 December 2007 (UTC)
I've done this now. ~ UBeR ( talk) 04:31, 19 December 2007 (UTC)
Checked on with University of Wisconsin Geology Department Library classifications - Wisconsin and Wisconsinan are both correct usage, but the former simply points to a full entry under the latter, which indicates Wisconsinan is the preferred term. Edited accordingly. 69.23.137.73 ( talk) 18:36, 23 January 2008 (UTC)
The articles that should link here have been sabotaged and vandalized. The article about the Wisconsinian Glaciation, a North American geological/glacial event, has been destroyed. The persons responsible need be banned. In that some art has been used in this wanton act of vandalism, it will take some weeks for us mere scholars to repair it. I am so angry. -- Ace Telephone ( talk) 09:06, 27 January 2008 (UTC)
The Driftless Area can be characterized as the supreme artifact of the Wisconsinian Glaciation, the region that should have been glaciated (but left behind no drift). The Wikipedia move was moronic, idiotic. The Wisconsinian involves five hundred million years of geologic history in North America, all of which are usually present in the Driftless. Trust me: I live on a hill 1200 feet and 17 miles above the 660 feet of the local pool and dam, about 17 miles away; we don't live in mountains, but something ever more peculiar.
The Wisconsinian Glaciation was local to North America. Ace Telephone ( talk) 03:28, 29 January 2008 (UTC)
Wisconsinian Glaciation is the historic term. Wikipedia does not invent new nomenclature, but some [sanitised] decided to do so. Ace Telephone ( talk) 03:28, 29 January 2008 (UTC)
At this point, I'm not certain any of us know what we're talking about. I'm defending my article Driftless Area which is a spectacularly long-term local North American last-glacial-era event which indeed extended over a half-million years of the last ice age (but of course, describing an area that remained free of continental glaciers). The Driftless Area probably qualifies as a Geologic province. Ace Telephone ( talk) 07:41, 3 February 2008 (UTC)
According to this article, the glaciation started about 70,000 years BP, but the article on the preceding Eemian interglacial states that it ended about 114,000 BP. What happened in the intervening period? Dudleymiles ( talk) 20:47, 4 February 2008 (UTC)
My local geologic history lacks 500,000 years of continental glaciation! I live in the Driftless Area! Yes, local history -- an exemption from glaciation that needs an explanation. I've tried to explain it. And the silly change in name remains silly. Karst topography is not found in drifted areas. Deep steep canyons are not found in drifted areas. -- Ace Telephone ( talk) 05:43, 8 February 2008 (UTC)
To get us started in the right direction, I changed "At the height of glaciation the Bering land bridge permitted migration of mammals and humans to North America from Siberia." to "At the height of glaciation the Bering land bridge permitted migration of mammals such as humans to North America from Siberia." I'm sure some will be shocked to learn that humans are a type of mammal!
Maybe someone else can pick up where I left off and make this article into something to be proud of? —Preceding unsigned comment added by 207.138.32.33 ( talk) 22:57, 8 May 2008 (UTC)
Anyone agree the heading image of the earth seen from space at the height of the last glaciation is not very helpful? I've been trying for fifteen minutes to match it to ordinary geography, that is to grasp from what angle it's supposed to show the earth. I supppose the N Atlantic is at the centre, but the rest? If northern Europe is the big hump on the top right, then what are the big white spots at right centre of the picture? Ethiopia and east Africa? That won't do: those ice sheets were relatively small in extent compared to those in the north. The edge outline of the ice to the left looks strange too. The lack of differentiation between non-glaciated continents and sea is a big drawback - both are shown as simply dark! I've seen much better pictures using the same idea, at the very least this one needs some captioning. Strausszek ( talk) 10:04, 20 October 2010 (UTC)
Did no non-mamillian land animals migrate over Bering? No birds, snakes, lizards, frogs, insects, opossums, freshwater fish? Did anything go the other way? For instance horses -- there are paleoequid fossils in South America, right? So the horses must have gone that way during interglacials to get established in Eurasia where the Cossacks could find them 65.46.169.246 ( talk) 15:55, 22 November 2010 (UTC)
Hi, this article has some substantial geologic errors. The meeting of the ice sheets did not make the Cypress Hills in Alberta, they date from the creation of the Rocky Mountains in the Mezozoic. Also, glaciers may have shaped the Great Lakes but the Lake Superior basin's been around a billion years and change. c.f.
The opening sentence says that the period ended 10,000 years ago. The fourth sentence of "Origin and Definition" says the period ended 10,500 BC, i.e. 12,500 years ago. Which is it? AndrewColeman2010 ( talk) 22:46, 13 August 2013 (UTC)
The section on regional names currently suggests that the last ice age was known as the 'Devensian' in the British Isles and the Midlandian in Ireland. Certainly it is known as the Devensian in Great Britain (ie the UK minus Northern Ireland) but to extend that to the (often controversial - but let's not go there) British Isles - is that a step too far? I'm aware that the same event is referred to as the 'Midlandian' in the Republic of Ireland - is it also known as such in Northern Ireland or is it even referred to there by both names? Any NI Quaternary specialists wish to comment? cheers Geopersona ( talk) 09:24, 19 September 2013 (UTC)
It's been a ~year since I read a paper (can't find it). But other locations included in that paper as follow.
Area | Name / Description |
---|---|
N.America (Pacific coast) | Fraser |
N.America (Rocky Mt.) | Pinedale |
N.America (Central) | Wisconsinan |
N.America (Sierra Nevada) | Tahoe, Tenaya, & Tioga (3 glacial maximum in order of oldest to youngest) |
Eastern Europe | Valdai |
Scandinavia/Central Europe | Weichselian or Vistulian |
British Isles | Devensian |
Ireland | Midlandian |
European Alps | Würm |
Siberia | Zyryanka |
Maghreb (North Africa) | glaciated (didn't have a name) |
Kilimanjaro | glaciated till present (didn't have a name) |
Mount Kenya & Ruwenzori Mt. | glaciated till present (didn't have a name) |
Taiwan | repeated glaciations (didn't have a name) |
Japanese Alps | glaciated (didn't have a name) |
Venezuela | Mérida |
Chile | Llanquihue |
Greenland | northwest glaciation (didn't have a name) |
New Zealand | Otira |
Antarctica | Antarctic glaciation |
Thanks, Marasama ( talk) 23:51, 5 February 2015 (UTC)
The Milankovitch Cycles are the cause of glacial and interglacial periods. There is nothing in this article about the cause of the last glacial period. There is nothing about how Earth's orbit or axial tilt back then compares to now.
The article title is "Last glacial period". So far I am concerned in popular usage this means refers to the ice-ages, but the Last glacial period did also affected non-glaciated temperate and tropical areas, because this shouldn't the article include a section on how the glacial period effected "non-glaciated" parts of the globe (e.g. periglaciated areas, the oceans, the Sahahara, the Amazon rainforest etc.)? – Lappspira ( talk) 17:24, 11 April 2017 (UTC)
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Hi all.
The few maps already illustrating this article are great (artistic rendition, vegetation...), but I think it would be even better to have first a clear and simple map that shows only the coastlines then and now...
I'll look around for a source- ideally an svg.
MarmotteiNoZ 23:31, 14 May 2018 (UTC)
This section is tendentious and unreferenced. It states "The last glacial period is sometimes colloquially referred to as the "last ice age", though this use is incorrect because an ice age is a longer period of cold temperature in which year-round ice sheets are present near one or both poles." There is no such accepted distinction between the terms glacial period and ice age. In a search on Google Scholar of "last ice age" the first ten uses all (where it is clear from the abstract how the term is being used) refer to the last 100,000 years. The section needs re-writing. Dudley Miles ( talk) 12:43, 1 October 2018 (UTC)
Hi folks. I just removed a few paragraphs at the start of "Overview" that were largely composed of original research. I think its attempt to give some rough global values to the level of cooling before going into regional detail was a good idea, but it wasn't implemented well. If included, perhaps it would be more appropriate in the lead. Massivefranklin ( talk) 02:26, 17 February 2019 (UTC)
That first graphic is horrific. Not clear what it is, and too many abbreviations, and no clear key to colors. Just someone trying to show off about how techy they are. — Preceding unsigned comment added by 73.38.104.150 ( talk) 22:39, 29 January 2022 (UTC)
So you could probably look this up in a bigger article, but what was the period before the ice age. You know, since I'm doing some Wikipedia reading, I might like to know random things. FourLights ( talk) 04:41, 15 May 2024 (UTC)
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Given the number of geographically-specific names (Wisconsinian and Vistula can be added to the list in the article), would it make sense to move the article to Ice Age or The Ice Age? 68.81.231.127 19:01, 21 Jan 2005 (UTC)
I am inclined to move this article to The last ice age in view of the various names for it in this article. Comments? Abtract 18:16, 21 October 2007 (UTC)
The present article is somewhat inconsistently expressed in years Before Christ. Years Before Present, with a "Present" permanently fixed at 1950, reflects the best normal practice, however. ( Wetman 08:54, 28 September 2005 (UTC))
It appears that this is a BC article from the history and as above. Some editors have added dates from BCE so mixing up the usage in the article. There were 2 instances of BCE use and 4 instances of BC use so why was the article harmonised on 4th Nov by altering the BC labels rather than the BCE ones?-- Muirofsara ( talk) 11:18, 30 December 2019 (UTC)
Um, how is it that the "general glacial advance began about 70,000 BC" but "The Tahoe reached its maximum extent perhaps about 70,000 years ago" [i.e., 68,000 BC] Did those early glaciers really gallop?
I found this page while looking for more info on a passing comment by Richard Dawkins (The Ancestor's Tale, pg 405): “... guessing that our ancestors, but not the chimpanzees’, passed through a genetic bottleneck not very long ago. The population was reduced to a small number, came close to going extinct, but just pulled through. There is evidence of a fierce bottleneck - perhaps down to a population of 15,000 some 70,000 years ago, caused by a six-year ‘volcanic winter’ followed by a thousand-year ice age. Like the children of Noah in the myth, we are all descended from this small population, and that is why we are so genetically uniform. Similar evidence, of even greater genetic uniformity, suggests that cheetahs passed through an even narrower bottleneck more recently, around the end of the last Ice Age.” Dawkins does not provide footnotes or endnotes, so I can't provide his sources, but the apparent contradiction with Wiki's summary is striking.
There is nothing in this article on
I'm not the one to attempt this summary. 134.121.64.253 02:11, 14 January 2006 (UTC)
The intro says, "The general glacial advance ... reached its maximum extent about 18,000 BCE." Later the article says "The Tioga was the least severe ... of the Wisconsinan group and reached its greatest advance 20,000 years ago". If the Tioga was the least severe one would expect the maximum for the whole period would have been in the Tahoe or Tenaya periods more than 30,000 years ago. Either some change or some explanation required.
Secondly, the first sentence says, "The Wisconsin ... and Würm glaciation ... are the most recent glaciations ...". If (as it seems to me) this is one glaciation with many names (and several periods), shouldn't it read, "... is the most recent glaciation ...". Otherwise, if it is many glaciations, shouldn't it read, "The Wisconsin ... and Würm glaciations ..."? Nurg 03:16, 5 November 2006 (UTC)
I think the name of this article is a bit misleading. The last ice age is technically the Karoo Ice Age. Technically, again, we're still in an ice age, referred to as the Quaternary glaciation, host to the many familiar glacials and interglacials. I think it would be most prudent, so as not to confuse the readers, to rename the article to Last glacial or Last glacial period (prefer the latter). If you explain in the article that, colloquially, "ice age" is sometimes used to refer to the period ice advances, but "glacial" is a more correct term to use, then this will be less confusing for the reader. ~ UBeR ( talk) 21:19, 16 December 2007 (UTC)
I've done this now. ~ UBeR ( talk) 04:31, 19 December 2007 (UTC)
Checked on with University of Wisconsin Geology Department Library classifications - Wisconsin and Wisconsinan are both correct usage, but the former simply points to a full entry under the latter, which indicates Wisconsinan is the preferred term. Edited accordingly. 69.23.137.73 ( talk) 18:36, 23 January 2008 (UTC)
The articles that should link here have been sabotaged and vandalized. The article about the Wisconsinian Glaciation, a North American geological/glacial event, has been destroyed. The persons responsible need be banned. In that some art has been used in this wanton act of vandalism, it will take some weeks for us mere scholars to repair it. I am so angry. -- Ace Telephone ( talk) 09:06, 27 January 2008 (UTC)
The Driftless Area can be characterized as the supreme artifact of the Wisconsinian Glaciation, the region that should have been glaciated (but left behind no drift). The Wikipedia move was moronic, idiotic. The Wisconsinian involves five hundred million years of geologic history in North America, all of which are usually present in the Driftless. Trust me: I live on a hill 1200 feet and 17 miles above the 660 feet of the local pool and dam, about 17 miles away; we don't live in mountains, but something ever more peculiar.
The Wisconsinian Glaciation was local to North America. Ace Telephone ( talk) 03:28, 29 January 2008 (UTC)
Wisconsinian Glaciation is the historic term. Wikipedia does not invent new nomenclature, but some [sanitised] decided to do so. Ace Telephone ( talk) 03:28, 29 January 2008 (UTC)
At this point, I'm not certain any of us know what we're talking about. I'm defending my article Driftless Area which is a spectacularly long-term local North American last-glacial-era event which indeed extended over a half-million years of the last ice age (but of course, describing an area that remained free of continental glaciers). The Driftless Area probably qualifies as a Geologic province. Ace Telephone ( talk) 07:41, 3 February 2008 (UTC)
According to this article, the glaciation started about 70,000 years BP, but the article on the preceding Eemian interglacial states that it ended about 114,000 BP. What happened in the intervening period? Dudleymiles ( talk) 20:47, 4 February 2008 (UTC)
My local geologic history lacks 500,000 years of continental glaciation! I live in the Driftless Area! Yes, local history -- an exemption from glaciation that needs an explanation. I've tried to explain it. And the silly change in name remains silly. Karst topography is not found in drifted areas. Deep steep canyons are not found in drifted areas. -- Ace Telephone ( talk) 05:43, 8 February 2008 (UTC)
To get us started in the right direction, I changed "At the height of glaciation the Bering land bridge permitted migration of mammals and humans to North America from Siberia." to "At the height of glaciation the Bering land bridge permitted migration of mammals such as humans to North America from Siberia." I'm sure some will be shocked to learn that humans are a type of mammal!
Maybe someone else can pick up where I left off and make this article into something to be proud of? —Preceding unsigned comment added by 207.138.32.33 ( talk) 22:57, 8 May 2008 (UTC)
Anyone agree the heading image of the earth seen from space at the height of the last glaciation is not very helpful? I've been trying for fifteen minutes to match it to ordinary geography, that is to grasp from what angle it's supposed to show the earth. I supppose the N Atlantic is at the centre, but the rest? If northern Europe is the big hump on the top right, then what are the big white spots at right centre of the picture? Ethiopia and east Africa? That won't do: those ice sheets were relatively small in extent compared to those in the north. The edge outline of the ice to the left looks strange too. The lack of differentiation between non-glaciated continents and sea is a big drawback - both are shown as simply dark! I've seen much better pictures using the same idea, at the very least this one needs some captioning. Strausszek ( talk) 10:04, 20 October 2010 (UTC)
Did no non-mamillian land animals migrate over Bering? No birds, snakes, lizards, frogs, insects, opossums, freshwater fish? Did anything go the other way? For instance horses -- there are paleoequid fossils in South America, right? So the horses must have gone that way during interglacials to get established in Eurasia where the Cossacks could find them 65.46.169.246 ( talk) 15:55, 22 November 2010 (UTC)
Hi, this article has some substantial geologic errors. The meeting of the ice sheets did not make the Cypress Hills in Alberta, they date from the creation of the Rocky Mountains in the Mezozoic. Also, glaciers may have shaped the Great Lakes but the Lake Superior basin's been around a billion years and change. c.f.
The opening sentence says that the period ended 10,000 years ago. The fourth sentence of "Origin and Definition" says the period ended 10,500 BC, i.e. 12,500 years ago. Which is it? AndrewColeman2010 ( talk) 22:46, 13 August 2013 (UTC)
The section on regional names currently suggests that the last ice age was known as the 'Devensian' in the British Isles and the Midlandian in Ireland. Certainly it is known as the Devensian in Great Britain (ie the UK minus Northern Ireland) but to extend that to the (often controversial - but let's not go there) British Isles - is that a step too far? I'm aware that the same event is referred to as the 'Midlandian' in the Republic of Ireland - is it also known as such in Northern Ireland or is it even referred to there by both names? Any NI Quaternary specialists wish to comment? cheers Geopersona ( talk) 09:24, 19 September 2013 (UTC)
It's been a ~year since I read a paper (can't find it). But other locations included in that paper as follow.
Area | Name / Description |
---|---|
N.America (Pacific coast) | Fraser |
N.America (Rocky Mt.) | Pinedale |
N.America (Central) | Wisconsinan |
N.America (Sierra Nevada) | Tahoe, Tenaya, & Tioga (3 glacial maximum in order of oldest to youngest) |
Eastern Europe | Valdai |
Scandinavia/Central Europe | Weichselian or Vistulian |
British Isles | Devensian |
Ireland | Midlandian |
European Alps | Würm |
Siberia | Zyryanka |
Maghreb (North Africa) | glaciated (didn't have a name) |
Kilimanjaro | glaciated till present (didn't have a name) |
Mount Kenya & Ruwenzori Mt. | glaciated till present (didn't have a name) |
Taiwan | repeated glaciations (didn't have a name) |
Japanese Alps | glaciated (didn't have a name) |
Venezuela | Mérida |
Chile | Llanquihue |
Greenland | northwest glaciation (didn't have a name) |
New Zealand | Otira |
Antarctica | Antarctic glaciation |
Thanks, Marasama ( talk) 23:51, 5 February 2015 (UTC)
The Milankovitch Cycles are the cause of glacial and interglacial periods. There is nothing in this article about the cause of the last glacial period. There is nothing about how Earth's orbit or axial tilt back then compares to now.
The article title is "Last glacial period". So far I am concerned in popular usage this means refers to the ice-ages, but the Last glacial period did also affected non-glaciated temperate and tropical areas, because this shouldn't the article include a section on how the glacial period effected "non-glaciated" parts of the globe (e.g. periglaciated areas, the oceans, the Sahahara, the Amazon rainforest etc.)? – Lappspira ( talk) 17:24, 11 April 2017 (UTC)
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Cheers.— InternetArchiveBot ( Report bug) 20:34, 17 December 2017 (UTC)
Hi all.
The few maps already illustrating this article are great (artistic rendition, vegetation...), but I think it would be even better to have first a clear and simple map that shows only the coastlines then and now...
I'll look around for a source- ideally an svg.
MarmotteiNoZ 23:31, 14 May 2018 (UTC)
This section is tendentious and unreferenced. It states "The last glacial period is sometimes colloquially referred to as the "last ice age", though this use is incorrect because an ice age is a longer period of cold temperature in which year-round ice sheets are present near one or both poles." There is no such accepted distinction between the terms glacial period and ice age. In a search on Google Scholar of "last ice age" the first ten uses all (where it is clear from the abstract how the term is being used) refer to the last 100,000 years. The section needs re-writing. Dudley Miles ( talk) 12:43, 1 October 2018 (UTC)
Hi folks. I just removed a few paragraphs at the start of "Overview" that were largely composed of original research. I think its attempt to give some rough global values to the level of cooling before going into regional detail was a good idea, but it wasn't implemented well. If included, perhaps it would be more appropriate in the lead. Massivefranklin ( talk) 02:26, 17 February 2019 (UTC)
That first graphic is horrific. Not clear what it is, and too many abbreviations, and no clear key to colors. Just someone trying to show off about how techy they are. — Preceding unsigned comment added by 73.38.104.150 ( talk) 22:39, 29 January 2022 (UTC)
So you could probably look this up in a bigger article, but what was the period before the ice age. You know, since I'm doing some Wikipedia reading, I might like to know random things. FourLights ( talk) 04:41, 15 May 2024 (UTC)