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  #1  
Old Yesterday, 06:38 PM
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cmac2012 cmac2012 is online now
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Mystery of moving rocks on Death Valley lake bed solved (probably)

http://www.grindtv.com/outdoor/natur...valley-solved/

One popular theory was that strong winter winds upward to 90 mph combined with just enough rain to make the clay slippery caused the stones to "sail."

Another is that ice sheets pick up the rocks, or ice forms around the rock enabling it to move with the wind, leaving a series of rock trails.

But now, the mystery is solved.

Scientists can say conclusively that these synchronized trails left by rocks, some up to 700 pounds, are caused by thin sheets of ice pushing the rocks across the desert floor under certain conditions, a theory that had been previously dismissed in 1976 after a test.


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Last edited by cmac2012; Today at 11:39 AM.
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  #2  
Old Yesterday, 06:51 PM
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Well thank Cod. I can cross that off my list of things that keep me up at night.
:/
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  #3  
Old Yesterday, 07:50 PM
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Well thank Cod. I can cross that off my list of things that keep me up at night.
:/
Sportsdad, true to form. Rest easy bro, football season begins in earnest soon.

But thank you for your valuable contribution!
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Last edited by cmac2012; Today at 12:09 AM.
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Old Today, 05:55 AM
Spike Holmes Spike Holmes is offline
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I remember reading about this years ago then, I saw the article. Unlike others, this didn't keep me awake at night but,I was always curious about it.Thanks for sharing.
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  #5  
Old Today, 08:37 AM
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I had not heard about these moving rocks - fascinating though - and it's pretty interesting that such thin sheets of ice push them - but a large sheet will have a large mass!
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Old Today, 08:40 AM
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Science is cool.
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Old Today, 09:22 AM
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**Its what connects me to life.

The didnt say this, but I think part of the phenomena is that the ice forms and holds the stone, and then the shallow pond changes depth- wind blown water causes water volume to move and the depth around the rock rises slightly- the buoyancy of the ice lifts the stone and it can be moved.

Interesting research- thx for posting!
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Old Today, 11:36 AM
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**Its what connects me to life.

The didnt say this, but I think part of the phenomena is that the ice forms and holds the stone, and then the shallow pond changes depth- wind blown water causes water volume to move and the depth around the rock rises slightly- the buoyancy of the ice lifts the stone and it can be moved.

Interesting research- thx for posting!
That sounds like a good synopsis. I was sorta leaning in that direction, thinking that after the ice started to melt, wind on the water would push the water against the ice. I first saw pictures of this years ago on a calendar and got a kick out of it. Now I gotta figure out a good excuse to go hiking up there in the dry season.

Some of those rocks are reportedly about 500 lbs.
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Old Today, 03:16 PM
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Heard this on NPR this morning. Very cool.
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  #10  
Old Today, 04:54 PM
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In this case, it is indeed true. Truth is stranger than friction.
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