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Numerous Ooids at Stop 3, Bagnold Dunes, Mars

Wednesday, March 15, 2017 6:45
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Last updated on March 17, 2017

Background Information: Martian microbes produced numerous ooids in Gale Crater, Mars, as evidenced in http://wretchfossil.blogspot.tw/p/putative-martian-microbes-formed.html 
NASA’s Mars rover Curiosity acquired this image using its Mars Hand Lens Imager (MAHLI), on March 15, 2017, Sol 1637.

On the left side of the figure are countless ooids. Red arrows point to spherical ooids. Green lines go to eroded ooids that are hemispherical with dark nuclei. Unmarked are countless ooids. Eroded ooids in this figure are much more abundant than spherical ooids. Most of these ooids range from 0.2 mm to 0.5 mm in diameter (see scale bar in  https://www.flickr.com/photos/fossil_lin/33430459686/sizes/o/). 
Image source: https://mars.nasa.gov/msl/multimedia/raw/?rawid=1637MH0006930010602743C00_DXXX&s=1637

Added on March 16, 2017: More Ooids Found at Stop 3, Bagnold Dune, Mars

The largest size for the above figure: 
NASA’s Mars rover Curiosity acquired this image using its Mars Hand Lens Imager (MAHLI), on March 15, 2017, Sol 1637.

Ten red arrows point to spherical ooids. The ooids are smaller than 1 mm across (note 1). Image source: https://mars.nasa.gov/msl/multimedia/raw/?rawid=1637MH0006940010602779C00_DXXX&s=1637

 
 
 

 



Source: http://wretchfossil.blogspot.com/2017/03/numerous-ooids-at-stop-3-bagnold-dunes.html

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