Difference between revisions of "August 22, 2014"
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<em>image by [mailto:alejandrosanz617@gmail.com Alejandro Sanz], Ayllón, Spain</em><br /> | <em>image by [mailto:alejandrosanz617@gmail.com Alejandro Sanz], Ayllón, Spain</em><br /> | ||
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| − | A nondescript part of the Moon, like so many other places. And like all of those places there is a range of time and processes displayed. The youngest features are the few small craters half-blackened by their western rim shadows, and the clumps of small secondary craters from nearby Tycho. Everything else is older and beaten down in various ways. [ | + | A nondescript part of the Moon, like so many other places. And like all of those places there is a range of time and processes displayed. The youngest features are the few small craters half-blackened by their western rim shadows, and the clumps of small secondary craters from nearby Tycho. Everything else is older and beaten down in various ways. [https://the-moon.us/wiki/Rükl_65 Ball], at lower left, still has a mostly continuous rim, but its wall terraces have all slumped together so you could slide down to the floor with only a few bumps along the way. At upper left Hell also has a continuous rim - evidence of some youthfulness - but it is not circular. Its east-west elongation almost looks like two overlapping craters, but I think is just due to massive collapses of the west wall that moved it further out. A close [http://bit.ly/1twnkCz look] under high Sun reveals dark patches along the moat area between the wall and the central mountain of Hell. And a closer LRO-NAC [http://bit.ly/1sYsWZC view] shows a few dark halo impact craters, including some very small ones with downslope trails of dark material. If this is mare basalt that has been excavated, it implies that mare lavas exist below Hell, which, surprisingly, is about one kilometer deeper than the floor of Deslandres. However, old mare lavas do [http://www2.lpod.org/wiki/September_22,_2006 crop out] on the northeast floor of Deslandres, just outside this image. The possibility of mare material related to Deslandres is consistent with the [http://www.lpod.org/archive/archive/2004/05/LPOD-2004-05-07.htm speculation] that it is a small impact basin. <br /> |
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<em>[mailto:tychocrater@yahoo.com Chuck Wood]</em><br /> | <em>[mailto:tychocrater@yahoo.com Chuck Wood]</em><br /> | ||
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<strong>Related Links</strong><br /> | <strong>Related Links</strong><br /> | ||
| − | <em>[ | + | <em>[[21st Century Atlas of the Moon|21st Century Atlas]]</em> chart 16.<br /> |
Alex's [http://www.astrosurf.com/asanz/asanz website]<br /> | Alex's [http://www.astrosurf.com/asanz/asanz website]<br /> | ||
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| + | <p><b>Yesterday's LPOD:</b> [[August 21, 2014|Blocks of Rocks]] </p> | ||
| + | <p><b>Tomorrow's LPOD:</b> [[August 23, 2014|ABF and Other Stuff]] </p> | ||
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Latest revision as of 07:24, 28 October 2018
Update From Hell
image by Alejandro Sanz, Ayllón, Spain
A nondescript part of the Moon, like so many other places. And like all of those places there is a range of time and processes displayed. The youngest features are the few small craters half-blackened by their western rim shadows, and the clumps of small secondary craters from nearby Tycho. Everything else is older and beaten down in various ways. Ball, at lower left, still has a mostly continuous rim, but its wall terraces have all slumped together so you could slide down to the floor with only a few bumps along the way. At upper left Hell also has a continuous rim - evidence of some youthfulness - but it is not circular. Its east-west elongation almost looks like two overlapping craters, but I think is just due to massive collapses of the west wall that moved it further out. A close look under high Sun reveals dark patches along the moat area between the wall and the central mountain of Hell. And a closer LRO-NAC view shows a few dark halo impact craters, including some very small ones with downslope trails of dark material. If this is mare basalt that has been excavated, it implies that mare lavas exist below Hell, which, surprisingly, is about one kilometer deeper than the floor of Deslandres. However, old mare lavas do crop out on the northeast floor of Deslandres, just outside this image. The possibility of mare material related to Deslandres is consistent with the speculation that it is a small impact basin.
Chuck Wood
Technical Details
17th August 2014 at 04:10 U.T. C11 - f/30 - DMK31
Related Links
21st Century Atlas chart 16.
Alex's website
Yesterday's LPOD: Blocks of Rocks
Tomorrow's LPOD: ABF and Other Stuff
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