Difference between revisions of "September 19, 2010"
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Rükl plate [http://the-moon.wikispaces.com/R%C3%BCkl+14 14]<br /> | Rükl plate [http://the-moon.wikispaces.com/R%C3%BCkl+14 14]<br /> | ||
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<p><b>Yesterday's LPOD:</b> [[September 18, 2010|By the Scattered Light of the Moon]] </p> | <p><b>Yesterday's LPOD:</b> [[September 18, 2010|By the Scattered Light of the Moon]] </p> | ||
<p><b>Tomorrow's LPOD:</b> [[September 20, 2010|Wonderland]] </p> | <p><b>Tomorrow's LPOD:</b> [[September 20, 2010|Wonderland]] </p> | ||
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Revision as of 14:19, 8 February 2015
Posidonius - a Geologists Paradise
image by LRO WAC from Rick Evans
In this LRO WAC closeup image we can really get into the detail of what is inside the great crater Posidonius. Posidonius formed on the rim of the Serenitatis basin, which had started to subside from the weight of the early lava fill and general isostatic readjustment after the impact. The mare side of Posidonius sank too causing faults that allowed lava to seep into and partially flood the interior of the crater. Continued subsidence probably caused the faults and collapse of old lava tubes may have caused the sinuous rilles we see on the floor today. The straight rilles being possibly formed as grabbens from the stresses of deformation in this floor fracture crater. The edge of the crater wall terrace to the right (East) seems to have pealed away from the rim. Why? That is for geologists to determine, probably linked to the readjustments of the area. But with so much going on in there, I think this crater would be a geologists paradise to explore!
Maurice Collins
Technical Details
Image assembled with LROC_WAC_Image_Previewer Mosaic stitched with Microsoft ICE, Photometric correction done in ImageJ with final processing in Photoshop CS4.
Related Links
Rükl plate 14
Yesterday's LPOD: By the Scattered Light of the Moon
Tomorrow's LPOD: Wonderland
COMMENTS?
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