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I don't actually know the answer, so this is the best hint you're going to get out of me.
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Maria Brumm has a Master's degree... in Science! She wrote her thesis on hydrogeolo tectohydr gehoo seismohydrololololol ground water in tectonically active settings, and is currently looking for work in the Seattle area. She has previous professional experience in hydrogeology and knows how to rock a GIS analysis; her resume is available here.
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« Repost: Larry Summers, Math, and Violence | Main | Borg Business »
Friday Rock Blogging: Mud
Category: Rock Blogging
Posted on: March 7, 2008 7:48 AM, by Maria Brumm
Picture courtesy reader Martin. Or maybe Martin doesn't actually read this blog, and it's just Wren. Anyway, thanks, Wren and Martin!
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Comments
Based on your clue, this is clearly a strange phenomenon that exists only along the border of Wales and England, possibly due to a secret EM fence between them :)
Posted by: Ellery | March 7, 2008 8:45 AM
Could it be that a tidal bore moves up this waterway and when the tide drops, these ridges of sediment result from erosion?
Posted by: cope | March 7, 2008 8:54 AM
No comment, since I have no clue -- I just love Friday rock blogging.
Posted by: delagar | March 7, 2008 9:26 AM
Just guessing here, but looking at the raised edges and their shadows, I'm wondering if this is mud that has run over a tilted slate bed, or some such similar structure.
Posted by: chezjake | March 7, 2008 10:00 AM
Overbank flood deposit? Control: duration and size of flood
or
A semi careened off the m48 and into the water and created a big wave. Control: Size of semi.
Posted by: Ben | March 7, 2008 10:05 AM
Well geez, let's bring the entire aviary in on this! I think these waveforms are actually mimicking the wingbeats of an unladen swallow. The real question is... African or European?
Posted by: Ron Schott | March 7, 2008 10:06 AM
I wonder if the pylons of the bridge there play some role in the formation.
Posted by: Owen | March 7, 2008 10:23 AM
Ooo! The M48! The road that takes me home. This picture is making me homesick for the Severn, there's some great fossil hunting to be done along there... *sigh*
Anyway. Before I saw the larger picture I was going to say that they were current formed ripples as there is definite bifurcation on some of those crests.
Posted by: Laura | March 7, 2008 10:47 AM
hmmm...at first glance, the features have an erosional rather than depositional look to them ... I might have to agree with cope above...something along those lines.
Posted by: BrianR | March 13, 2008 1:07 PM