Difference between revisions of "April 17, 2005"
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=Collapsing Mountain?= | =Collapsing Mountain?= | ||
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| − | + | <td width="50%"><h2><nobr>Collapsing Mountain?</nobr></h2></td> | |
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| − | + | <tr><td colspan="2" valign="top"><div align="center"> | |
| − | + | <img src="archive/2005/04/images/LPOD-2005-04-17.jpeg" border="0"> | |
| − | + | </div></td> | |
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<table width="80%" border="0" align="center" cellpadding="8"> | <table width="80%" border="0" align="center" cellpadding="8"> | ||
| − | + | <tr><td><div align="center" class="main_sm">Image Credit: [mailto:mwirths@superaje.com Mike Wirths]</p> | |
| − | + | </div></td> | |
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<br> | <br> | ||
<table class="story" border="0" bgcolor="#FFFFFF" width="90%" cellpadding="10" align="center"><tr><td> | <table class="story" border="0" bgcolor="#FFFFFF" width="90%" cellpadding="10" align="center"><tr><td> | ||
| − | + | <p align="center"><b>Collapsing Mountain?</b></p> | |
| − | + | <p align="left">Stephen Keenes [http://www.lpod.org/archive/2004/01/LPOD-2004-01-26.htm image] of the Hippalus Arcs is one of my all-time favorite lunar photos. The focus of attention of both Stephens previous LPOD image and todays excellent one by Mike Wirths is the set of curved graben that mark where the lunar surface fractured when the weight of the Humorum lavas caused that basin center to subside. But on Mikes image I immediately noticed something that I hadnt seen before. The isolated peak left of center has a lobe of material to the left. It appears that the graben cuts this lobe because a faint trace of the graben edge is visible through the deposit. A more interesting interpretation is that the lobe flowed down from the mountain as a giant landslide. Landslides are rare on the Moon, but common elsewhere, especially on [http://berlinadmin.dlr.de/Missions/express/first/05.08.2004_eng.shtml Mars] and Jupiters moon [http://solarsystem.nasa.gov/scitech/display.cfm?ST_ID=487 Io]. Landslides occur most readily where there is a weak layer that breaks apart and collapses gravitationally under stress. Probably most lunar scientists would say that the lobe is simply a residual piece of old lunar terrain surrounded by mare. It probably is, but may not be. This is a good target for hyper-resolution imaging! | |
</p> | </p> | ||
| − | + | <blockquote><p align="right">— [mailto:tychocrater@yahoo.com Chuck Wood]</blockquote> | |
<p align="left"><p><b>Technical Details:</b><br> | <p align="left"><p><b>Technical Details:</b><br> | ||
March 20, 2005. 18" Starmaster + 5X's powermate + a Baader 685nm IR passband filter.</p> | March 20, 2005. 18" Starmaster + 5X's powermate + a Baader 685nm IR passband filter.</p> | ||
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<br>Rukl Plate 53 | <br>Rukl Plate 53 | ||
<p align="left"><b>Tomorrow's LPOD: </b> Unknown right now!</p> | <p align="left"><b>Tomorrow's LPOD: </b> Unknown right now!</p> | ||
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</table> | </table> | ||
<br> | <br> | ||
<table width="100%" border="0" cellspacing="2" cellpadding="4"> | <table width="100%" border="0" cellspacing="2" cellpadding="4"> | ||
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| − | + | <td><hr></td> | |
| − | + | </tr> | |
| − | + | <tr><td> | |
| − | + | <p align="center" class="main_titles"><b>Author & Editor:</b><br> | |
| − | + | [mailto:tychocrater@yahoo.com Charles A. Wood]</p> | |
| − | + | <p align="center" class="main_titles"><b>Technical Consultant:</b><br> | |
| − | + | [mailto:anthony@perseus.gr Anthony Ayiomamitis]</p> | |
| − | + | <p align="center" class="main_titles"><b>Contact Translator:</b><br> | |
| − | + | [mailto:pablolonnie@yahoo.com.mx" class="one Pablo Lonnie Pacheco Railey] (Es)<br> | |
| − | + | [mailto:chlegrand@free.fr" class="one Christian Legrand] (Fr)</p> | |
| − | + | <p align="center" class="main_titles"><b>[mailto:webuser@observingthesky.org Contact Webmaster]</b></p> | |
| − | + | <p align="center" class="main_titles"><b>A service of:</b><br> | |
| − | + | [http://www.observingthesky.org/" class="one ObservingTheSky.Org]</p> | |
| − | + | <p align="center" class="main_titles"><b>Visit these other PODs:</b> <br> | |
| − | + | [http://antwrp.gsfc.nasa.gov/apod/astropix.html" class="one Astronomy] | [http://www.msss.com/" class="one Mars] | [http://epod.usra.edu/" class="one Earth]</p> | |
| − | + | </td></tr> | |
</table> | </table> | ||
<p> </p> | <p> </p> | ||
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===COMMENTS?=== | ===COMMENTS?=== | ||
Click on this icon [[image:PostIcon.jpg]] at the upper right to post a comment. | Click on this icon [[image:PostIcon.jpg]] at the upper right to post a comment. | ||
Revision as of 18:31, 4 January 2015
Collapsing Mountain?
<nobr>Collapsing Mountain?</nobr> |
<img src="archive/2005/04/images/LPOD-2005-04-17.jpeg" border="0"> |
Image Credit: Mike Wirths
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Collapsing Mountain? Stephen Keenes image of the Hippalus Arcs is one of my all-time favorite lunar photos. The focus of attention of both Stephens previous LPOD image and todays excellent one by Mike Wirths is the set of curved graben that mark where the lunar surface fractured when the weight of the Humorum lavas caused that basin center to subside. But on Mikes image I immediately noticed something that I hadnt seen before. The isolated peak left of center has a lobe of material to the left. It appears that the graben cuts this lobe because a faint trace of the graben edge is visible through the deposit. A more interesting interpretation is that the lobe flowed down from the mountain as a giant landslide. Landslides are rare on the Moon, but common elsewhere, especially on Mars and Jupiters moon Io. Landslides occur most readily where there is a weak layer that breaks apart and collapses gravitationally under stress. Probably most lunar scientists would say that the lobe is simply a residual piece of old lunar terrain surrounded by mare. It probably is, but may not be. This is a good target for hyper-resolution imaging! Technical Details: Related Links: Tomorrow's LPOD: Unknown right now! |
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Author & Editor: Technical Consultant: Contact Translator: A service of: Visit these other PODs: |
COMMENTS?
Click on this icon File:PostIcon.jpg at the upper right to post a comment.
