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Author: Subject: Ecolodge Tres Virgenes EcoTours
StuckSucks
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[*] posted on 1-27-2018 at 12:26 PM


Quote: Originally posted by David K  



Shouldn't the text Tres Virgenes be located on the west side of the road, where the cones are located?




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[*] posted on 4-11-2018 at 11:03 AM


Hi Jim, I just noticed this question from you, sorry it took me a few months to spot it! LOL

The volcano complex of Trés Vírgenes is huge, with three (tres) primary 'cones' that are part of a large caldera, much like Yellowstone. In actuality, the caldera is known as 'La Reforma' with La Vírgen being the highest peak.

The full text is 'Volcán Tres Vírgenes' with the paved road going north between the words. I began the name at the south slope of the tallest cone but here it applies to the entire caldera that stretches to the gulf coast.

The word 'lodge' is next to the black box which indicates where the 'hotel' is located (west of the road).

Does this make sense to you?

[Edited on 4-11-2018 by David K]




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[*] posted on 4-11-2018 at 12:28 PM


Quote: Originally posted by David K  


The volcano complex of Trés Vírgenes is huge, with three (trés) primary 'cones' that are part of a large caldera, much like Yellowstone. In actuality, the caldera is known as 'La Reforma' with La Vírgen being the highest peak.



the tres virgenes volcanoes are west of la reforma caldera and southwest of aguajito caldera. the tres virgenes are younger than the calderas. the tres virgenes are not in the calderas.




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[*] posted on 4-11-2018 at 01:48 PM


That seems to be a special word! Thanks for noticing so long after this was first posted.

Volcán has an accent and Vírgenes has an accent. I guess I didn't want Tres to be left out? LOL

Thanks!




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[*] posted on 4-11-2018 at 04:28 PM


Thanks Goat, for pointing out calderas and general placement of stuff.





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[*] posted on 4-11-2018 at 04:54 PM


Great map, Stucks. My limited geologic knowledge couldn't get around that being a 'caldera'. The Virgenes (all 3) are volcanic peaks from their own separate vents in ascending order from the north. A 'caldera' is a very large group of blow-outs in great volume, like Jellystone. There are no calderas known (from MHO) to have happened in recorded history (YET). It's definitely a cataclysmic event when it does.

Your map shows some wonderful insights to what went down..... "pyroclastic rock" would've happened during the caldera event. It's deeper material than simple lava...... that comes from the mantle rather than melted crustal materials like basalt ("lava"). Hence the pyroclastic mat'l is what carries ore to the surface, as in what they're mining in Sta. Rosalia etc. "Lahar" is hot jettisoned mat'l down the mountainsides during violent eruptions like St. Helens had in '80. The map shows the lahars came down from the two older volcanos, probably old enough when Baja was wet, cooler and wild..... long before human habitation but long after the caldera events. the ''Lava" below La Virgen was the most recent basaltic flow, and not long ago at all (in geologic terms).

Lordy, to be younger with this info and spend time out there pokin' around... too late for me, but you amateur rock-knockers, have at it. Every time I see La Senora I always wish there was a little plume coming out of a vent somewhere. It's dormant, not extinct by any means. I've heard undocumented rumors of early reports from the late 1700's of a bit of smoke up there...... wot a treasure...... :coolup:





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[*] posted on 4-11-2018 at 06:14 PM
Katmai Caldera


Buddha, the 1912 eruption in Alaska probably qualifies; https://www.nps.gov/articles/aps-v11-i1-c2.htm

Buildings on Kodiak Island collapsed under the load of ash!



[Edited on 4-12-2018 by AKgringo]




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[*] posted on 4-11-2018 at 08:56 PM


True, AK... come to realization, the Kiluea area is a caldera as well, and has been erupting constantly for what, 35 years now? As I mentioned, a caldera is a series of many vents, volcanoes and dykes which Kiluea has several of... that when fueled all at once can create a cataclysmic eruption which fortunately hasn't happened in recorded history such as Yellowstone, etc. One volcano like Krakatoa can create devastating effects, but a full-on blast like Yellowstone would re-create life as we know it. La Virgen is a very dangerous volcano much like St. Helens that as a cone volcano has the potential for a large violent eruption rather than an ''ooze'' eruption, however who's flanks show just that...... a basaltic ooze of the last event.

My new state of NM is an example, but millions of years old now. Lots of calderas around us, like the Gila Mountains for instance. Most of New Mexico is volcanic. Also, IDAHO. OREGON. The whole of the California/Baja CA granitic mountains are a batholith of lava that didn't make the surface to touch oxygen and turn into lava, hence the origin of granite in general. Whoo, earth happens!

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