December 8, 2016

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A Third Gander at Neander

Originally published January 27, 2007


image by Bob Pilz

This little fault seems to escaped detection by most classical selenographers and Apollo scientists, but has been discovered a couple of times by LPOD contributors. Jim Phillips imaged it in 2004, and someone else did two weeks later (but I can’t open that LPOD - does someone else have a copy?). Now Bob has acquired an excellent image that reignites interest. Previously I speculated that one arm of the feature was roughly radial to Nectaris and that it may be related to the formation of that basin. And it may be, but the smooth surface that the southern part of the fault cuts seems like it is sparsely cratered and could be younger than Nectaris. Another possible origin is even more speculative. My friend Alan Binder published a paper 20 years ago suggesting that there is a large number of small and recent faults in the highlands of the Moon - perhaps this Neander fault is one of them. Alan argued that the faults were due to stresses induced by the early totally molten Moon, and that they are evidence that seismic activity might still be occurring. Alan’s book November_25,_2006 relies of such faulting for its climax. This Neander fault is larger and morphologically different than the typical faults Binder mapped, but its origin is uncertain and it provides a good prop to hang a story on.

Charles Wood

Technical Details:
2006/10/10, Utime: ~07:24. 200mm f/6 Newtonian reflector + Televue 3x Barlow + DMK 21BF04 B/W camera + ‘Blue’ IR-block filter, .20 arcsec/pixel, 30 fps, 1/44 sec, 600/6000 frames stacked. Processed in Registax, ImagesPlus, PS CS. Taken from Lat: 35 degrees 36 minutes N, Long: 82 degrees 33 minutes W, Elev: ~850m

Related Links:
Rükl chart 68
Bob’s website
Lunar Orbiter IV view

Yesterday's LPOD: A Lunoid and Lava

Tomorrow's LPOD: Herigonius Pi & Eta


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