Wednesday Whatzits: A Permian caldera find, the legends of Pele and a quieting Redoubt

Some brief tidbits for your Wednesday:


The view of Mt. Saint Helens from the Johnston Ridge Observatory.

  • There is a decent article about research being done at a dissected caldera system in the Italian Alps' Sesia Valley. The caldera in question is the Permian in age (248-298 million years old) so don't expect to find it in the GVP database, but the outcrops of this ancient caldera are especially well exposed, allowing for a cross section of volcano and plutonic rocks across 25 km of crustal depth (all of which is now at the surface thanks to hundreds of millions years of tectonics). It does sound like a great location that exposes some of the volcanic-plutonic plumbing system that we don't really understand, but I'm not 100% sure about calling it a "rosetta stone" - there are a few systems in the southwest U.S. (and Maine for that matter) that expose both the volcanic and plutonic parts of an ancient volcano (but the press loves any "supervolcano"). Take note, the image at the top is, in fact, the Bishop Tuff in Long Valley, not anything from this Italian study.
  • It seems that the visitors' center at Mt. Saint Helens will be getting some help over the next year to make it a little more user-friendly. I like that, but reopening the Coldwater Creek visitors' center might be nice, too.
  • In a little culture-meets-science talk, The Honolulu Advertiser has a piece about connecting native Hawaiian legends about the goddess Pele to the volcanic history of Kilauea. This isn't really a new concept - trying to match legend with history - but I'm always pleased to read more efforts to do so.
  • And for those of you still following Redoubt, the seismic activity is continuing to wane, but the volcano continues to steam away. The steam doesn't suggest much about any activity - just that water is coming into contact with the hot rocks in the new lava dome. In related news, Chevron says that oil production in the Cook Inlet has reached 75% of where it was before the Redoubt-related shutdown earlier this year.

More like this

Pohutu Geyser in Rotorua, New Zealand. Image taken by Erik Klemetti in January 2009. It has been busy busy week for me, capped off today with a talk about my field work in New Zealand (see above), so I don't have much to say. Not much new news today about the Saudi Arabian earthquake swarms, but…
This is another busy Wednesday for me as the Geology Dept. at UC Davis will be hosting Dr. Jacob Lowenstern, USGS scientist and director of the Yellowstone Volcano Observatory. He will be giving the weekly seminar, along with another talk in the evening at Sacramento State as part of the…
Photo: The north flank of Mount Redoubt in early February 2009. Credit: Chris Waythomas / Alaska Volcano Observatory/U.S. Geological Survey I've been following the waxing and waning of activity at Mt. Redoubt in Alaska for the past two months like many of you have. For a time there, the volcano…
Redoubt from Ninilchik, AK. Image courtesy of Calvin Hall. It has been a few days since we've talked about Redoubt. Well, it might be because the volcano has settled down for the past week, to the point that AVO put the volcano back to Orange/Watch status last week and hasn't had to go back to Red…