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Ancient, Eroded Ooids at Namib Dune, Mars
Wednesday, February 10, 2016 1:32
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Last updated on Feb. 11, 2016
The above is a microscopic image taken at Namib Dune in Bagnold dune field, Gale Crater, Mars. In the white circles are ancient ooids that have been eroded into hemispheres. The hemispheres are all smaller than 1 mm across. Highest resolution:
https://www.flickr.com/photos/fossil_lin/24299934194/sizes/o/ , which is 200% of www.flickr.com/photos/lunexit/24626790060/in/dateposted/
https://www.flickr.com/photos/fossil_lin/24299934194/sizes/o/ , which is 200% of www.flickr.com/photos/lunexit/24626790060/in/dateposted/
Original raw image by NASA: mars.nasa.gov/msl/multimedia/raw/?rawid=1242MH00056200204…
For comparison, the following photo shows Earthly ooids that have been eroded into hemispheres:
Original caption: “Mega ooids! Dave’s finger for scale.” The above photo shows ooids in China Ranch, California, USA. Red lines in the photo mark ooids that have been eroded into hemispheres. Image source: the last fifth photo indaveandiztakeonthewest.blogspot.tw/2012/11/china-ranch-an…
