Difference between revisions of "July 15, 2011"
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=End of the Rille= | =End of the Rille= | ||
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| − | <em>image by [mailto:jordi-ortega@ono.com | + | <em>image by [mailto:jordi-ortega@ono.com Jordi Ortega] (Barcelona, Spain)</em><br /> |
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| − | LPOD welcomes a new contributor with an excellent image that makes me think. | + | LPOD welcomes a new contributor with an excellent image that makes me think. |
| − | The conspicuous features are Pitatus with its edge-hugging rilles, and Hesiodus | + | The conspicuous features are Pitatus with its edge-hugging rilles, and Hesiodus |
| − | A, one of the largest concentric craters. Just above these features is the Hesiodus | + | A, one of the largest concentric craters. Just above these features is the Hesiodus |
| − | Rille which crosses mare and highlands and then stops. It peters out to the west, | + | Rille which crosses mare and highlands and then stops. It peters out to the west, |
| − | perhaps covered by later lavas, but in the east it stops against the rim of the crater | + | perhaps covered by later lavas, but in the east it stops against the rim of the crater |
| − | Hesiodus. Mare Nubium and the rille are younger than Hesiodus. Why did the rille | + | Hesiodus. Mare Nubium and the rille are younger than Hesiodus. Why did the rille |
| − | stop there but continue through the highlands to the west? If we knew what forces | + | stop there but continue through the highlands to the west? If we knew what forces |
| − | caused the rille's formation we might be able to answer that question. The rille is | + | caused the rille's formation we might be able to answer that question. The rille is |
| − | not radial or concentric to any basin, as many linear and arcuate rilles are. But it | + | not radial or concentric to any basin, as many linear and arcuate rilles are. But it |
| − | probably either formed over a bend in the crust due to the mare side subsiding, or | + | probably either formed over a bend in the crust due to the mare side subsiding, or |
| − | it is over an igneous dike that intruded into the crust, causing it to uplift slightly and | + | it is over an igneous dike that intruded into the crust, causing it to uplift slightly and |
| − | collapse into a trough. So, did the subsidence not continue to the east? No, for the | + | collapse into a trough. So, did the subsidence not continue to the east? No, for the |
| − | center of the Nubium basin is lower than its edges. And we don't have any idea | + | center of the Nubium basin is lower than its edges. And we don't have any idea |
| − | why a dike would be there in the first place. An unsatisfactory situation. | + | why a dike would be there in the first place. An unsatisfactory situation. |
<br /> | <br /> | ||
| − | <em>[mailto:tychocrater@yahoo.com | + | <br /> |
| + | <em>[mailto:tychocrater@yahoo.com Chuck Wood]</em><br /> | ||
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<strong>Technical Details</strong><br /> | <strong>Technical Details</strong><br /> | ||
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<strong>Related Links</strong><br /> | <strong>Related Links</strong><br /> | ||
| − | Rükl plate [ | + | Rükl plate [https://the-moon.us/wiki/R%C3%BCkl_53 53] & [https://the-moon.us/wiki/R%C3%BCkl_54 54]<br /> |
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<hr /> | <hr /> | ||
| + | <p><b>Yesterday's LPOD:</b> [[July 14, 2011|Van Gogh Moon]] </p> | ||
| + | <p><b>Tomorrow's LPOD:</b> [[July 16, 2011|Animated Drawings - a Lunar First?]] </p> | ||
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Latest revision as of 18:48, 13 October 2018
End of the Rille
image by Jordi Ortega (Barcelona, Spain)
LPOD welcomes a new contributor with an excellent image that makes me think.
The conspicuous features are Pitatus with its edge-hugging rilles, and Hesiodus
A, one of the largest concentric craters. Just above these features is the Hesiodus
Rille which crosses mare and highlands and then stops. It peters out to the west,
perhaps covered by later lavas, but in the east it stops against the rim of the crater
Hesiodus. Mare Nubium and the rille are younger than Hesiodus. Why did the rille
stop there but continue through the highlands to the west? If we knew what forces
caused the rille's formation we might be able to answer that question. The rille is
not radial or concentric to any basin, as many linear and arcuate rilles are. But it
probably either formed over a bend in the crust due to the mare side subsiding, or
it is over an igneous dike that intruded into the crust, causing it to uplift slightly and
collapse into a trough. So, did the subsidence not continue to the east? No, for the
center of the Nubium basin is lower than its edges. And we don't have any idea
why a dike would be there in the first place. An unsatisfactory situation.
Chuck Wood
Technical Details
23 June 2011 04:24 UT. Meade 10" at f/10. DMK 31 camera with Baader Is pass filter. Best of 2304 frames aligned with Registax 6 and post-processed with Astroart 6
Related Links
Rükl plate 53 & 54
Yesterday's LPOD: Van Gogh Moon
Tomorrow's LPOD: Animated Drawings - a Lunar First?
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