[meteorite-list] 'Chevrons' Are Not Evidence Of Megatsunamis

From: lebofsky at lpl.arizona.edu <lebofsky_at_meteoritecentral.com>
Date: Fri, 1 May 2009 20:47:56 -0700 (MST)
Message-ID: <8388805eb07a5c2a70c06e0f713013db.squirrel_at_webmail.lpl.arizona.edu>

Hi All:

Why can't these chevrons in the Mars picture just be typical sand dunes?

I happened to look at the whole picture and the lower features that look
like boomerangs are called barchans and are caused by wind. I happened to
actually use this picture at a workshop last week! The wind blows the dust
off of the high areas on the left and creates these features.

Larry

> Here's a great photo of a group of chevrons:
>
> http://www.flickr.com/photos/badastronomy/3432647881/sizes/o/
>
> Must have been one hell of a tsunami.
>
> http://blogs.discovermagazine.com/badastronomy/page/8/
> ______________________________________________
> http://www.meteoritecentral.com
> Meteorite-list mailing list
> Meteorite-list at meteoritecentral.com
> http://six.pairlist.net/mailman/listinfo/meteorite-list
>
Received on Fri 01 May 2009 11:47:56 PM PDT