Difference between revisions of "February 7, 2004"

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      <td width="50%"><h2 align="left">Crumpled Sheets of Lava</h2></td>
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[[File:LPOD-2004-02-07.jpeg|LPOD-2004-02-07.jpeg]]</div>
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      <td><div align="center" span class="main_sm">Image Credit:  [mailto:kcpaulhk@yahoo.com.hk K.C. Pau]</div></td>
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<td><div align="center"><p>Image Credit:  [mailto:kcpaulhk@yahoo.com.hk K.C. Pau]</p></div></td>
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<p class="story" align="center"><b>Crumpled Sheets of Lava </b></p>
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  <p class="story" align="center"><b>Crumpled Sheets of Lava </b></p>
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<p class="story" align="left">        Crumpled sheets on a bed result from movement of a thin surface layer (the sheet) due to underlying motion (the  
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restless sleeper). KC Pau's low sun view of eastern Mare Nubium looks like a messy lava sheet where most of the  
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  <p class="story" align="left">        Crumpled sheets on a bed result from movement of a thin surface layer (the sheet) due to underlying motion (the  
+
movement may have been vertical. Mare ridges - or the more descriptive term, wrinkle ridges - clearly trace out  
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        restless sleeper). KC Pau's low sun view of eastern Mare Nubium looks like a messy lava sheet where most of the  
+
a buried rim of the impact crater (Ancient Thebit) cut by the Straight [[January_11,_2004|Wall]].  
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        movement may have been vertical. Mare ridges - or the more descriptive term, wrinkle ridges - clearly trace out  
+
Shadows from these draped ridges clearly reveal that the surface inside the buried rim is lower than Mare Nubium  
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        a buried rim of the impact crater (Ancient Thebit) cut by the Straight [../01/LPOD-2004-01-11.htm Wall].  
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itself. The other Nubium ridges are harder to understand. A few small arcs seem to likewise mark a crater engulfed  
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        Shadows from these draped ridges clearly reveal that the surface inside the buried rim is lower than Mare Nubium  
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by lavas, but most ridges here do not parallel the nearly indistinct rim of the Nubium impact basin. Nubium's  
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        itself. The other Nubium ridges are harder to understand. A few small arcs seem to likewise mark a crater engulfed  
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rilles are more like those of Mare Fecunditatis - unrelated to anything we understand. But look closely at KC's  
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        by lavas, but most ridges here do not parallel the nearly indistinct rim of the Nubium impact basin. Nubium's  
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photo for two other linear mare features. (1) Do you see the apparent crease in the surface running from north to  
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        rilles are more like those of Mare Fecunditatis - unrelated to anything we understand. But look closely at KC's  
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south, west of the Birt rille? I have seen this on other images, but this one shows that the surface texture  
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        photo for two other linear mare features. (1) Do you see the apparent crease in the surface running from north to  
+
immediately east of the crease is rougher than that to the west. (2) Another subtle linear feature runs from the  
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        south, west of the Birt rille? I have seen this on other images, but this one shows that the surface texture  
+
top center of the image diagonally to the right. This is possibly an earlier delicate, nearly lava-buried rille.  
−
        immediately east of the crease is rougher than that to the west. (2) Another subtle linear feature runs from the  
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It is not shown in Rukl's wonderful <I>Lunar Atlas</I> but is hinted at in the Related Link Lunar Orbiter IV  
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        top center of the image diagonally to the right. This is possibly an earlier delicate, nearly lava-buried rille.  
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image below. Has KC discovered another rille? And what happens to it to the north? </p>
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        It is not shown in Rukl's wonderful <I>Lunar Atlas</I> but is hinted at in the Related Link Lunar Orbiter IV  
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<p><b>Technical Details:</b><br>
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        image below. Has KC discovered another rille? And what happens to it to the north? </p>
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10&quot; reflector with 2.5x barlow and Philips Toucam<b>.</b></p>
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<p class="story"><b>Related Links:</b><br>
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  <p><b>Technical Details:</b><br>
 
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  10&quot; reflector with 2.5x barlow and Philips Toucam<b>.</b></p>
 
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  <p class"story"><b>Related Links:</b><br>
 
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[http://www.lpi.usra.edu/research/lunar_orbiter/images/aimg/iv_113_h2.jpg Lunar Orbiter IV View]<br>
 
[http://www.lpi.usra.edu/research/lunar_orbiter/images/aimg/iv_113_h2.jpg Lunar Orbiter IV View]<br>
 
[http://www.lpi.usra.edu/meetings/lpsc2000/pdf/1364.pdf Geology of Mare Nubium]<br>
 
[http://www.lpi.usra.edu/meetings/lpsc2000/pdf/1364.pdf Geology of Mare Nubium]<br>
 
[http://observingthesky.org/index.php?p=174 KC Pau]</p>
 
[http://observingthesky.org/index.php?p=174 KC Pau]</p>
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<p><b>Yesterday's LPOD:</b> [[February 6, 2004|New and Old All Together]] </p>
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  <p class"story"> <b>Tomorrow's LPOD:</b> Crazy Quilt Imbrium</p>
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<p><b>Tomorrow's LPOD:</b> [[February 8, 2004|Crazy Quilt Imbrium]] </p>
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<p align="center" class="main_titles"><b>Author & Editor:</b><br>
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[mailto:tychocrater@yahoo.com Charles A. Wood]</p>
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  <p align="center" class="main_titles"><b>Author & Editor:</b><br>
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      [mailto:chuck@observingthesky.org Charles A. Wood]</p>
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      <p align="center" class="main_titles"><b>Technical Consultant:</b><br>
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      [mailto:anthony@perseus.gr Anthony Ayiomamitis]</p>
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  [mailto:webmaster@entropysponge.com Contact Webmaster]</b></p>
 
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      <p align="center" class="main_titles"><b>A service of:</b><br>
 
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      <a class="one" href="http://www.observingthesky.org/">ObservingTheSky.Org</a></p>
 
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      <p align="center" class="main_titles"><b>Visit these other PODs:</b> <br>
 
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      <a class="one" href="http://antwrp.gsfc.nasa.gov/apod/astropix.html">Astronomy</a> | <a class="one" href="http://www.msss.com/">Mars</a> | <a class="one" href="http://epod.usra.edu/">Earth</a></p></td>
 
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Latest revision as of 18:11, 7 February 2015

Crumpled Sheets of Lava

LPOD-2004-02-07.jpeg

Image Credit: K.C. Pau

Crumpled Sheets of Lava

Crumpled sheets on a bed result from movement of a thin surface layer (the sheet) due to underlying motion (the restless sleeper). KC Pau's low sun view of eastern Mare Nubium looks like a messy lava sheet where most of the movement may have been vertical. Mare ridges - or the more descriptive term, wrinkle ridges - clearly trace out a buried rim of the impact crater (Ancient Thebit) cut by the Straight Wall. Shadows from these draped ridges clearly reveal that the surface inside the buried rim is lower than Mare Nubium itself. The other Nubium ridges are harder to understand. A few small arcs seem to likewise mark a crater engulfed by lavas, but most ridges here do not parallel the nearly indistinct rim of the Nubium impact basin. Nubium's rilles are more like those of Mare Fecunditatis - unrelated to anything we understand. But look closely at KC's photo for two other linear mare features. (1) Do you see the apparent crease in the surface running from north to south, west of the Birt rille? I have seen this on other images, but this one shows that the surface texture immediately east of the crease is rougher than that to the west. (2) Another subtle linear feature runs from the top center of the image diagonally to the right. This is possibly an earlier delicate, nearly lava-buried rille. It is not shown in Rukl's wonderful Lunar Atlas but is hinted at in the Related Link Lunar Orbiter IV image below. Has KC discovered another rille? And what happens to it to the north?

Technical Details:
10" reflector with 2.5x barlow and Philips Toucam.

Related Links:
Lunar Orbiter IV View
Geology of Mare Nubium
KC Pau

Yesterday's LPOD: New and Old All Together

Tomorrow's LPOD: Crazy Quilt Imbrium

Author & Editor:
Charles A. Wood

 

COMMENTS?

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