Brian, I'm glad you put this on the list.
I've seen boudinaged con-trails and also listric thrusts in cirus clouds
as well that I've photographed and used as analogues for rocks. I'd be
very interested inexplanations
Dick
At 09:30 16/10/00 EDT, you wrote:
>Whilst flying over Canada recently, high above an extensive layer of
>altocumulus, I was surprised to see what appeared to be many, parallel, very
>continuous and straight, normal faults with small vertical displacements in
>the clouds! There were, in fact, two sets in different directions. Also,
>there was a set of gentle folds, with continuous, straight axes. Scattered,
>gentle domes, presumably due to thermals, also occurred. I was awake at the
>time, but for a moment wondered if I had gone to heaven!
>Have others observed these phenomena, and how can they be explained?
>Brian Walton.
>
>
Dr R.A.Glen
Geological Survey of New South Wales
Department of Mineral Resources
Box 536 St Leonards
NSW 2065
Australia
ph +61-2-99018346
fax +61-2-99018256
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