I’ll be giving a talk this afternoon here at Denison on rhyolite generation, so I might be a little brief this morning.

Undated image of Mayon in the Philippines.


  1. #1 Ekoh
    October 28, 2009

    I’ll put on you on the spot and ask, “How do you generate rhyolite Erik?”

  2. #2 Boris Behncke
    October 28, 2009

    While we have to wait for things to develop further at Mayon, we can now take a look at the Soufrière Hills volcano (Montserrat) in real time: the MVO ( is providing images from a monitoring camera. As of 17.58 h (time indicated in image frame) there’s quite some pyroclastic flow activity visible.

    Web cam link:

  3. #3 Erik Klemetti
    October 28, 2009

    Wow Boris, how have I missed this updated MVO website until now? I think they have set the bar for Volcano Observatory sites – lots of info, webcams and well organized. Kudos to the MVO folks.

  4. #4 Passerby
    October 28, 2009

    Updated photo page (last few days), USGS HVO website

  5. #5 mike don
    October 28, 2009

    That undated pic of Mayon: it looks very like the 1993 lava flow down the SE flank in the middle of the image, which would give an upper age limit for its date

  6. #6 Jason
    October 28, 2009

    Thoroughly interesting looking blog. My eldest son is developing a keen interest in all things related to volcanoes. This blog may be just the thing to stimulate him further.

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