Talk:Laacher See

Volcanic effects

You know, this was really, really fascinating to edit. As soon as I realized that 250 times the size of 1980 eruption of Mount Saint Helens is 300 cubic kilometers, the hard mathematics of such a volcanic eruption made the other details fall into place like neatly-arranged puzzle pieces. It was particularly fascinating finding it almost twice the size of Tambora's 1815 eruption, and considering the effects of that eruption in expanding on the disaster "beyond all description". Technically none of it is original research. No discussion thread—I'm just really satisfied with my edits. ^_^ - Gilgamesh (talk) 08:54, 14 April 2009 (UTC)

Isn't it cute how stupid our old edits look in retrospect? :) - Gilgamesh (talk) 19:53, 3 November 2013 (UTC)

WDR okt 2014

 http://www1.wdr.de/fernsehen/wissen/quarks/sendungen/eifeldasvulkanischeerbe100.html
  WDR .. report explained lacher see are OVERdue for 3000Y.
 Reported an heavly Big size plume 70km below surface of Mid-Western Germany (Laach/Daum/Düsseldorf/Sarbrücken)
 Plume Size reported mesured  10x more big then the mamba chaimber of yellowstone.
 and spreak kind of connected near to all Eifel Volcanos.
  .. an Volcano with sutch Big size Plume are an Potential VEI8.. 

This Plume reported also at http://www.eifel-service.de/info/plume.htm, http://www.vulkanismus.de/magma/_mantel10.htm
analyzed by http://www.gpi.kit.edu/Personen_215.php

— Preceding unsigned comment added by 213.179.158.151 (talk) 08:42, 2 November 2014 (UTC) 

Daily Mail...

What about this article...? --TheDRaKKaR (talk) 03:59, 5 January 2012 (UTC)

Complete nonsense,^[1][2] but what do you expect from the Daily Mail? Did they use our images without giving attribution? —Ruud 17:12, 5 January 2012 (UTC)

It's true, but geological time is somewhat different. Nobody says that you weren't on time if you're 3 minutes late. The same is with geological time, one generation is no time on geological terms.

"Repose periods": Toba (0.38 Ma); (Chesner, C.A.; Westgate, J.A.; Rose, W.I.; Drake, R.; Deino, A. (1991). "Eruptive History of Earth's Largest Quaternary caldera (Toba, Indonesia) Clarified" (PDF). Geology. 19 (3): 200–203. doi:10.1130/0091-7613(1991)019<0200:EHOESL>2.3.CO;2. Retrieved 2010-01-20. {{cite journal}}: Unknown parameter |month= ignored (help)); Valles Caldera (0.35 Ma); (Doell, R.R., Dalrymple, G.B., Smith, R.L., and Bailey, R.A., 1986, Paleomagnetism, potassium-argon ages, and geology of rhyolite and associated rocks of the Valles Caldera, New Mexico: Geological Society of America Memoir 116, p. 211-248.); (Izett, G.A., Obradovich, J.D., Naeser, C.W., and Cebula, G.T., 1981, Potassium-argon and fission-track ages of Cerro Toledo rhyolite tephra in the Jemez Mountains, New Mexico, in Shorter contributions to isotope research in the western United States: U.S. Geological Survey Professional Paper 1199-D, p. 37-43.); Yellowstone Caldera (0.7 Ma); (Christiansen, R.L., and Blank, H.R., 1972, Volcanic stratigraphy of the Quaternary rhyolite plateau in Yellowstone National Park: U.S. Geological Survey Professional Paper 729-B, p. 18.); San Andreas Fault ruptures every 101 years by simulation; Eifel hotspot (Laacher See region) is 10 to 12,000 years but I thought that I saw 10 to 20,000 years too.

The NE-SW trending Jemez Lineament, (the Valles Caldera is on the intersection of the Jemez Lineament and the Rio Grande rift) might be turned off, but the Yellowstone hotspot, Socorro (Rio Grande rift) and the Eifel hotspot have an active magma chamber. Actually, no news. --Chris.urs-o (talk) 20:50, 5 January 2012 (UTC)

The problems are more global. After the 2004 Indian Ocean earthquake and tsunami, there is an unencyclopedic possibility that New Madrid Seismic Zone and San Andreas Fault ruptures. This would increase possility that the Yellowstone magma chamber could fail in my statistical expected lifetime, for instance. But anyway, an eruption can always be as small as a simple lava flow. --Chris.urs-o (talk) 09:11, 6 January 2012 (UTC)

Volcanic activity in Eifel caused by landice?

The page says this:

"Volcanism in Germany can be traced back for millions of years, due to the collision between the African and Eurasian plates, but it has been concentrated in bursts associated with the loading and unloading of ice during glacial advances and retreats. "

I would love to believe that, and I can understand how such a process would work, but I have not been able to find any source for that other than this page. I'm starting to doubt whether or not this is true. Any sources?

84.27.149.123 (talk) 11:34, 4 July 2017 (UTC)

I don't believe this, too. The landice in scandinavia during the ice age ist linked to sinking scandinavia and the uprise of more southern land, and now, after it is gone, It is widely actzepted in german geophysics, that the recent sinking of the german coast and the recend uplift of scandinavia is caused by the melting ice. But they talk about meters to some dozend meters, which may be a great problem for a coastline, but not for volcanic activities.--Bernd Wiebus (talk) 14:02, 23 August 2018 (UTC)

In Förster, M.W. and Sirocko, F. (2016) "Volcanic activity in the Eifel during the last 500,000 years: The ELSA-Tephra-Stack", Global and Planetary Change, volume 142, pages 100-107, section 4: Episodic vs. continuous volcanism in the quaternary Eifel volcanic fields: conclusions from the ELSA-tephra-stack, the authors write about the apparent concentration of Eifel volcanic events between glacial maxima and glacial minima (that is, at times of the most intense climate change).

GeoWriter (talk) 20:21, 23 August 2018 (UTC)

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Laacher See Eruption and Younger_Dryas

There is an Article discussing the possibility, that the Laacher See eruption triggered the Younger_Dryas. See https://www.clim-past.net/14/969/2018/cp-14-969-2018.pdf Evaluating the link between the sulfur-rich Laacher See volcanic eruption and the Younger Dryas climate anomaly Baldini/Brown/Mawdsley 04 Jul 2018. This was reverted, but as a enzyclopedia, Wikipedia should have some hints to this discussion.--Bernd Wiebus (talk) 14:02, 23 August 2018 (UTC)

I reverted the edit because it was worded to give the impression that Oppenheimer supported the idea, whereas he described the effects of the eruption as local and limited. I do however think it is too early to discuss this paper. There are many papers giving different theories for the cause of the Younger Dryas, and we need to see whether they gain support from other experts before regarding them as encyclopedic. Dudley Miles (talk) 22:25, 23 August 2018 (UTC)

Younger_Dryas-event caused Laacher See Eruption

The Younger Dryas started nearly coincidental with the Laacher See volcanic eruption around 12900 years ago. It's now quiet clear that the Younger Dryas was triggered by a massive meteoric impact (craters among others in North-Greenland and Saginaw (Michigan)) nearly a million times more powerful then a normal atomic bomb. It seems very likely that this meteoric impact also triggered the Laacher See volcanic eruption, not the other way around. It's also possible that the same argument goes for the eruption that created the Puy de Dome vulcano in the Auvergne (said to have happened 12000 years ago, possibly the dating is 1000 years off). Since this cannot be published in the article (No Original Research), I place this comment here. JRB-Europe (talk) 23:56, 18 December 2018 (UTC)

New evidence supports episodic volcanic emissions Younger_Dryas-event

The meteoric impact is one of four hypotheses. Recent study of cave layers in Texas provide evidence that the Laacher See volcanic eruption was associated with the Younger Dryas Event. Elements in Texas cave sediments aren’t present in correct proportions for an asteroid or meteor to have hit the Earth. Rather the signature from osmium isotope analysis, and the relative proportion of elements matches data previously reported in volcanic gases. The geochemical signature associated with the cooling event is not unique and occurs four times between 9000 and 15,000 years ago --Jeannie Kever (July 31, 2020). "A New Chemical Analysis Upends Conventional Explanation for Global Cooling". University of Houston. University of Houston. Retrieved 3 August 2020.):

And, from the study article, "...layers below, above, and in the YD have 187Os/188Os ratios consistent with incorporation of extraterrestrial or mantle-derived material. The HSE abundances indicate that these layers contain volcanic gas aerosols and not extraterrestrial materials. The most likely explanation is that episodic, distant volcanic emissions were deposited in Hall’s Cave sediments." --A. D. Brandon; S. L. Forman; M. R. Waters; K. S. Befus (July 31, 2020). "Volcanic origin for Younger Dryas geochemical anomalies ca. 12,900 cal B.P.". Science Advances. 6 (31). American Association for the Advancement of Science. doi:10.1126/sciadv.aax8587. --Catrachos (talk) 12:26, 3 August 2020 (UTC)

Radiocarbon evidence also failed to support an impact analysis. --Ian A Jorgeson; Ryan P. Breslawski; Abigail E. Fisher (July 2020). "Radiocarbon simulation fails to support the temporal synchroneity requirement of the Younger Dryas impact hypothesis". Quaternary Research. 96. Cambridge University Press: 123–139. doi:10.1017/qua.2019.83. --Catrachos (talk) 13:25, 3 August 2020 (UTC)