torsdag 25. september 2014

WoGE #456

Luis' WoGE #455 seemed difficult at first, until I realised that the horizontal layers might be volcaniclastics.

So following that thought, here's a volcanic WoGE:

Location, name and date please!

For any new players to Where on (Google) Earth, simply post a comment with latitude and longitude and write something about the (geologic/geographic/hydrographic) feature in the picture. If you win, you get to host the next one. Previous WoGEs are collected by Felix on his blog and a KML file.

Hint #3: This is the same, continuation to the southwest.

6 kommentarer:

  1. Do I really have to give a hint on this?

    This is less than half of the whole thing. But if I showed all of it, it would be too thin to see.

  2. Second hint: This is historic, in more ways than one.

  3. Fourth hint: This is quite high on the list of deadliest natural disasters, and may well be underestimated by a large factor.

  4. Lakagígar ( - 64°03′53″N 18°13′34″W

    After a long search in the East African rift (mainly north) I gave up! Today, out of nowhere, I remember "Iceland!" - a little search and voilá, the Laki craters!
    Laki is part of the Grímsvötn volcanic system in the Eastern Volcanic Zone (EVZ) of Iceland and had an historic eruption that began on 8th June 1783 and lasted eight months. This volcanic episode had effects no only in Iceland (caused the death of about 20% of the Icelandic population) but also in Europe (and some say as far as India, Africa and Northe America).
    The 1783/84 eruption occurred as ten pulses of activity, each starting with a short-lived explosive phase followed by a long-lived period of fire-fountaining. Each pulse was associated with the opening of a fissure, and by the end of the eruption, the fissures extended for 27 km. The eruption produced approximately 15 km3 of lava that flowed to cover an area of approximately 565 km2, and produced about 0.4 km3 of tephra (rock fragments and particles). This was the second largest basaltic lava flow in Iceland in historical times. The eruption emitted about 122 megatons of sulphur dioxide into the atmosphere (Thordarson et al., 1996) which reacted in the atmosphere to form about 200 megatons of sulphuric acid aerosols (Thordarson and Self, 2003).

    Source: Laki eruption, Iceland | Updated 2013

  5. Finally!
    Congratulations, Luis. I have to admit that I thought this one would be easy, but I was wrong again. :)

    For anyone interested in the impact of the Lakagigar eruption on the world, this book might be interesting:

  6. Thanks!

    I'm winning a lot of WoGEs lately - my first conclusion (hope I'm wrong) is there shouldn't be a lot of people playing!

    Well ... let's go - WoGE #457 is here: