Talk:Caldera
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Caldera is part of WikiProject Geology, an attempt at creating a standardized, informative, comprehensive and easy-to-use geology resource. If you would like to participate, you can choose to edit this article, or visit the project page for more information. |
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[edit] Split
Should probably be split into two or more pages. There were at least two companies by the name of Caldera (Caldera Systems, Inc., and something else) at the same time for a while. —Mulad
Since this is a geology / volcanolgy page it is the companies that are at fault. The Geologist (talk) 16:27, 1 May 2008 (UTC)
[edit] Confusion
207.118.9.58 01:25, 7 November 2006 (UTC)I was under the impression that the term caldera referred to a specific type of magma chamber that tends to create these depressions, not the depressions themselves. The article seems to partially agree with me. Yellowstone, for example, shows no such depression due to the fact that the magma chamber has exceeded "half full" (when compared to evidence of previous Yellowstone eruptions). The only places where one can claim to see such a depression are a series of cliffs formed by several eruptions over eons, and are not a sign of any true land depression.
A caldera is the depression formed when the edifice collapses INTO the empty magma chamber and the cliffs - surprise, surprise!, represent the eroded ring fracture.The Geologist (talk) 16:25, 1 May 2008 (UTC)
[edit] 1980?
After the article says 'When Mount St. Helens erupted' .. there should be a date. But are they talking about the 1980 eruption?
207.118.9.58 01:20, 7 November 2006 (UTC)Yes, they are speaking of the 1980 eruption.
[edit] volcanic edifice
I do not understand at all what a volcanic edifice is.. Please explain...
Edifice means "Structure" from the latin "Edifico" which means "I build." Hence "Volcanic edifice" is the volcanic structure. The Geologist (talk) 16:28, 1 May 2008 (UTC)
[edit] ALL of North America?
The Wikipedia article on the Yellowstone caldera states that ash from the volcano's eruption 640,000 years ago covered MOST of North America. Even that sounds a little hyperbolic. Does this include both Alaska and Yucatan? I have changed ALL to MOST in keeping with the other Wikipedia article. Perhaps "a major portion" would be even better. 76.123.203.164 (talk) 12:48, 25 March 2008 (UTC)
- I agree. This USGS page says that "Huge volumes of volcanic ash were blasted high into the atmosphere, and deposits of this ash can still be found in places as distant from Yellowstone as Iowa, Louisiana, and California"; not all of North America by any means.
[edit] multiplicity
Is it calderas or caldera for the proper plural form of this phenomenon? Sochwa (talk) 03:17, 30 March 2008 (UTC)
"Calderas" is used when more than one caldera is being discussed as in "Nested calderas"The Geologist (talk) 16:23, 1 May 2008 (UTC)
