Mystery Volcano Photo #17

Thank you to all the Eruptions readers who have submitted photos for the Mystery Volcano Photo column! I'll start using them, well, now, so keep them coming. Remember, you can't guess on your own photo!

Current Standings:
Don Crain - 2
gijs - 2
The Bobs - 2
Boris Behncke - 2
volcanista - 1
Lockwood - 1
Elizabeth - 1
Ralph - 1
Anne - 1
Cam - 1
gg - 1
Damon Hynes - 1
Marco - 1

Here's the next MVP ... Good luck!


More like this

Cotopaxi in Peru?

By Chance Metz (not verified) on 03 Dec 2009 #permalink

First guess might be Mt Baker, but that's probably waaay off!

Hmmmm... Bright sunny day, very dark sky. Someplace very high probably. Planets highest volcanoes live in Chile.
Let's try San Jose (1507-02) at 19,212 feet.

By Big Noodle (not verified) on 03 Dec 2009 #permalink

Well, it looks to me like a weird angle of Popo, but that would be too easy. Neat picture and I have no idea. :-)

Chile? well Monte Burney is in Chile, and it looks a bit like that. OTOH it's not that high up.

I think it's Cotapaxi Volcano!

I'd say it is Kasbek in the Caucasus.

Now I see, it is Chimborazo in Ecuador.

w00t! Thanks for using my photo Erik. The Bobs has it right, congratulations! Chimborazo is the highest peak in Ecuador, over 6,200 metres a.s.l. Its summit is also the furthest point on the surface of the Earth from the center of the Earth (as the planet bulges at the equator and Chimborazo is only a degree or so South). Its last eruption was something like 1,500 years ago. But perhaps more wondrous than the volcano itself is the most amazing roadcut I have ever seen in my 5 years of volcanic and general geologic exploration, a few kilometres away from Chimborazo, showing the layered volcaniclastic deposits over the millenia. Check it out:……

By VolcanoMan (not verified) on 03 Dec 2009 #permalink

darn that wolud have been my second guess. I knew it was somewhere in the Andes

By Chance Metz (not verified) on 03 Dec 2009 #permalink


Could you post an annotated version of those pics? I'd like to know what's going on.

Wow, amazing pics! Is the upper (dark) layer from ash / tephra deposits only? (because this would mean that the last large eruption must have been a really impressive one). Looks like a good candidate for a vulcano profile to me. :-)

Just like an oreo! Do I see some columnar jointing up top?

The dark upper layer above the angular unconformity is a soil horizon, not columnar-jointed basalt (although it does look a lot like that in the photos). What I find most interesting is that there is evidence of both extension and compression in the deposits (the fact that both have happened AFTER a stratigraphic sequence of volcanic deposits was there already tells me that the place has a long and interesting tectonic past). Horsts and grabens, folding and reverse faulting all in the same place, it's like one of those stratigraphic test problems in my first-year geology course!

By VolcanoMan (not verified) on 04 Dec 2009 #permalink