Georgia Perimeter College professor Pamela Gore sent me these photos yesterday of some interesting structures she found in the snow in her yard. She was away for the storm itself, so she didn't watch them forming, but the morphology suggested linguoid ripple marks to her. If that's accurate, the current direction (wind direction) was from the north. Take a look at her photos below, and here's some photos for comparison.





Two shots that are zoomed and cropped from the image above:




Pamela e-mailed me again this afternoon to say that, "Looking at them in daylight, they look like they were formed by impacts of snow [clumps] from trees, landing at an angle and causing folding on the 'downstream' side."

What do you think? Are these linguoid ripples? Any sedimentologists want to chime in?

Labels: georgia, primary structures, snow

Five more of the maps I scanned from my recently-entered-the-public-domain copy of Vernon Quinn's book A Picture Map Geography of the United States. As before, clicking on the image will take you to a bigger version of the map. Enjoy!

Labels: art, books, california, georgia, idaho, maps, utah, west virginia