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New from Snet: Lithologs, a new tool to create lithological/sedimentological logs online..

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Up a Creek in Yosemite Valley, and a Wee Mystery For You......

I was in Yosemite Valley yesterday, and it was just gorgeous. I was conducting a field trip for my earth science class (oh, the torture; a required field Yosemite!), but had a few moments as the class was making their way from one end of the valley to the other to see the effects of the 1996 Happy Isles rock fall. I decided to do something new, and follow the Merced River as much as I | Impressum