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Question [Jan. 25th, 2007|01:14 pm]
Glaciology

glaciology

[begundan]
Does anyone know what these are called and/or how they are formed?

I know that's not a glacier and not really related either, but this community can tolerate one offtop :). Thanks.
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[User Picture]From: tafyrn
2007-01-26 01:36 am (UTC)
It appears to be a type of "Hoar frost" ( http://en.wikipedia.org/wiki/Frost ), which is formed by directly sublimation when there are high concentrations of water vapour in the atmosphere.

I've often see this form under pebbles and loose ground, where it pushes up the top layer as it grows underneath it. I've taken some pictures of it too, but yours is far nicer. ^_^

http://www.kasuria.com/tafyrn/photos/KICX3549_LJ.jpg



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