Talk:La Garita Caldera

From Wikipedia, the free encyclopedia

WikiProject Volcanoes

This article is part of WikiProject Volcanoes, a project to systematically present information on volcanoes, volcanology, igneous petrology, and related subjects. If you would like to participate, you can choose to edit the article attached to this page (see Wikipedia:Contributing FAQ for more information), or join by visiting the project page.
Start This article has been rated as Start-Class on the quality scale.
High This article has been rated as High-importance to WikiProject Volcanoes on the project's importance scale.
If you have rated this article please consider adding assessment comments.

Contents

[edit] CO: La Garita Mountains

TOPO! GPS Data Format Deg NAD27 ElevFeet
BENTSFORT ,38.09444,-102.75972,3789,BENTS NEW FORT MARKER :: ELEV 3789 FT
LAGARITAR,37.81250,-106.18750,7673,LA GARITA REGION :: ELEV 7673 FT
LAGARITAW ,37.95417,-106.85056,12748,LA GARITA WILDERNESS :: ELEV 12748 FT
LAGARITAC ,37.83778,-106.37278,9211,LITTLE LA GARITA CREEK :: ELEV 9211 FT


RJBurkhart 15:58, 6 January 2006 (UTC)

[edit] The Fish Canyon Tuff was not a VEI-9 eruption

Someone has stated that the Fish Canyon Tuff from La Garita Caldera was a VEI-9 eruption and that the volume was 18,000 cubic km. Both are inaccurate. Nowhere in the article [1] does it state that the FC Tuff had a high volume as this. In fact, it's still stated as 5,000 cubic km in that article. Because the erupted volume is under 10,000 cubic km, it is still a VEI-8 eruption [2]. If you read the article carefully (see first link in this paragraph), "Magnitude" is really a separate scale, and it is important to note that VEI and magnitude measure eruption sizes differently. VEI measures eruption sizes based on volume of magma erupted in cubic km and eruption column height. Magnitude, as used in the article by Mason et al, measures eruption size based on mass of magma erupted in kilograms. NorthernFire 06:12, 26 July 2006 (UTC)

That was me. Sorry, I misread the Mason et al article. Thanks for picking this up. I see most of related edits I made (to supervolcano, Volcanic Explosivity Index, and this article) have already been fixed, and I'm about to fix the few minor issues remaining. -- Avenue 08:54, 27 July 2006 (UTC)
The Siberian Traps is the largest known eruption on Earth.Lavalover 00:13, 1 October 2006 (UTC)

Someone has stated that a new system is needed. I agree because what have clearly been defined as the largest eruptions in the earth's history are being rejected by the VEI system.If a system that judged both kinds of eruptions existed then we could clearly see which are the largest eruptions and what eruption would rate as a VEI 9.Volcano man17:23 27 January 2007

[edit] Map

Surely there is a simple map or diagram of the caldera that could be included in the article? 128.165.87.144 21:09, 27 February 2007 (UTC)

Well, a location map and photo have been hiding over at Wheeler Geologic Area. I have added those to the article. --Seattle Skier (talk) 20:15, 2 May 2007 (UTC)

[edit] Second most energetic event?

Regarding the phrase "It is possibly only the second most energetic event to have ocurred on Earth besides the Chicxulub impact", what about the impact that formed the moon? Or the Sudbury Basin impact. Or the Vredefort crater impact? The phrase should be modified to read "It is probably the most energetic event to have ocurred on Earth since the Chicxulub impact." —Preceding unsigned comment added by Vgy7ujm (talk • contribs) 03:53, 13 March 2008 (UTC)

It should be noted that this is a short term release of energy. Keep in mind that basalt flood eruptions could release more energy as well. My take is that the Deccan traps and the Columbia River flood basalt eruptions would have released much more energy, perhaps even more than the Chicxulub impact, but that energy would have been released over a longer time. And I imagine that there's eveb more energy involved in the acceleration of a major continental plate. -- KarlHallowell (talk) 12:12, 25 April 2008 (UTC)

[edit] megatons to Zettajoules

The article makes a comparison between the largest nuclear bomb ever detonated, and this eruption, but uses completely incompatible units for comparison. This should either be removed, or the units converted to something that makes sense. —Preceding unsigned comment added by 208.102.7.183 (talk • contribs)

I'm inclined to agree with you. It might be better to compare with other volcanic events. One possibility is Savino & Jones ("Supervolcano: The Catastrophic Event That Changed the Course of Human History" ISBN 1564149536), who include a table in their page 104. I'm not sure if the following link to Google Books will work [3]. Jakew (talk) 17:24, 19 April 2008 (UTC)