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The Strange Rubbing Boulders of the Atacama
Geological Society of America ^
| October 11, 2011
| Unknown
Posted on 10/11/2011 3:03:04 PM PDT by decimon
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To: decimon
“the average boulder has experienced 50,000 to 100,000 hours of bumping and grinding while waiting for that nonexistent train.”
Well, at least they have something to keep them busy. Naughty boulders.
21
posted on
10/11/2011 5:02:19 PM PDT
by
Squeeky
("Truth is so rare that it is delightful to tell it. " Emily Dickinson)
To: Michael Barnes
The condensation under a rock on the flat is influence by the direction the sun rises and the nearness of a land rise such as seen behind the rock in the picture. The condensation reduces the coefficient of friction of the rock on the flats soil and the weight of the rock effects the size of the ‘channel walls’, up to a point sustainable by the formation of cie crystals in the condensation enriched soil. ... The side-walls will be noticeable but never high no matter how large the bolder etching the channel.
22
posted on
10/11/2011 5:05:39 PM PDT
by
MHGinTN
(Some, believing they can't be deceived, it's nigh impossible to convince them when they're deceived.)
To: Michael Barnes
The condensation under a rock on the flat is influence by the direction the sun rises and the nearness of a land rise such as seen behind the rock in the picture ... thawing is related to amount and direction of suns rays. The condensation reduces the coefficient of friction of the rock on the flats soil and the weight of the rock effects the size of the ‘channel walls’, up to a point sustainable by the formation of ice crystals in the condensation enriched soil. ... The side-walls will be noticeable but never high no matter how large the bolder etching the channel.
23
posted on
10/11/2011 5:06:47 PM PDT
by
MHGinTN
(Some, believing they can't be deceived, it's nigh impossible to convince them when they're deceived.)
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