Difference between revisions of "August 31, 2004"

From LPOD
Jump to: navigation, search
(Created page with "__NOTOC__ =Archimedes and his Mountains= ---- ===COMMENTS?=== Click on this icon image:PostIcon.jpg at the upper right to post a comment.")
 
Line 1: Line 1:
 
__NOTOC__
 
__NOTOC__
 
=Archimedes and his Mountains=
 
=Archimedes and his Mountains=
 +
 +
<br>
 +
<table width="85%"  border="0" align="center" cellpadding="6" cellspacing="2">
 +
    <tr>
 +
      <td>
 +
      </td>
 +
    </tr>
 +
</table>
 +
<table width="85%"  border="0" align="center" cellpadding="6" cellspacing="2">
 +
    <tr>
 +
      <td colspan="2" valign="top"><div align="center">
 +
    [javascript:;" onMouseOver="MM_swapImage('Image1','','images/LPOD-2004-08-31b.jpeg',1)" onMouseOut="MM_swapImgRestore() <img src="images/LPOD-2004-08-31.jpeg" name="Image1" width="381" height="425" border="0" id="Image1">]
 +
      </div></td>
 +
    </tr>
 +
</table>
 +
<table width="80%"  border="0" align="center" cellpadding="8">
 +
    <tr>
 +
      <td><div align="center" class="main_sm">Image Credit: [mailto:kcpaulhk@yahoo.com.hk" class="one K.C. Pau ] </div></td>
 +
    </tr> 
 +
</table> 
 +
<br>
 +
<table class="story" border="0" bgcolor="#FFFFFF" width="90%" cellpadding="10" align="center"><tr><td>
 +
  <p class="story" align="center"><b>Archimedes and his Mountains</b></p>
 +
  <p class="story" align="left">
 +
[http://www.lpod.org/archive/2004/04/LPOD-2004-04-05.htm Archimedes]  is the largest crater inside the Imbrium Basin (Sinus Iridum is bigger but its on the rim rather than inside). But I don't think it is observed much because its floor lacks a central peak and its small pits, unlike [http://www.lpod.org/archive/2004/01/LPOD-2004-01-24.htm Plato's],  haven't become known as a test for  seeing and optics. But south of Archimedes is an area that is even less often observed. The Archimedes Mountains are two crude arcs that run NE to SW, with a gentle curve inwards towards Imbrium. These mountains appear to be part of a 790 km wide inner ring of the Imbrium Basin, probably formed as a mega-terrace, as massive arcs of land slumped toward the hole created by the Imbrium impact. The mountains are in the midst of an area of low hills and small craters. This surface, lighter than nearby mare, is an area of KREEP volcanism called the Apennine Bench. This volcanic material was erupted onto the floor of the Imbrium basin and later was surrounded by normal mare basalts. 
 +
  <blockquote>
 +
    <p align="right"> &#8212; [mailto:chuck@observingthesky.org Chuck Wood ]</p>
 +
  </blockquote>
 +
  <p><b>Technical Details:</b><br>
 +
    Aug 7, 2004, 10&quot; f/6 Newtonian + 5X Barlow + Phillips Toucam Pro, 3 image mosaic.<br>
 +
    KREEP = Potassium, rare-earth elements and phosphorus rich basalts unique to the Imbrium area. </p>
 +
  <p><b>Related Links: </b><br>
 +
        [http://www.lpi.usra.edu/meetings/LPSC98/pdf/1352.pdf Geology and Composition of the Apennine Mountains]  <br>
 +
        [http://www.lpi.usra.edu/research/lunar_orbiter/images/img/iv_109_h3.jpg Lunar Orbiter IV View] </p>
 +
  <p><b>Tomorrow's LPOD:</b> Hundred Year Old Hevel</p>
 +
  <p><img src="MainPage/spacer.gif" width="640" height="1"></p></td>
 +
  </tr>
 +
</table>
 +
 +
<br>
 +
 +
<table width="100%"  border="0" cellspacing="2" cellpadding="4">
 +
    <tr>
 +
      <td><hr width="640"></td>
 +
  </tr>
 +
    <tr>
 +
      <td><p align="center" class="main_titles"><b>Author & Editor:</b><br>
 +
          [mailto:chuck@observingthesky.org 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>[mailto:webmaster@entropysponge.com Contact Webmaster]</b></p>
 +
        <p align="center" class="main_titles"><b>A service of:</b><br>
 +
            <a class="one" href="http://www.observingthesky.org/">ObservingTheSky.Org</a></p>
 +
        <p align="center" class="main_titles"><b>Visit these other PODs:</b> <br>
 +
          <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>
 +
  </tr>
 +
</table>
 +
 +
<p>&nbsp;</p>
  
  

Revision as of 14:43, 4 January 2015

Archimedes and his Mountains


[javascript:;" onMouseOver="MM_swapImage('Image1',,'images/LPOD-2004-08-31b.jpeg',1)" onMouseOut="MM_swapImgRestore() <img src="images/LPOD-2004-08-31.jpeg" name="Image1" width="381" height="425" border="0" id="Image1">]

Image Credit: " class="one K.C. Pau


Archimedes and his Mountains

Archimedes is the largest crater inside the Imbrium Basin (Sinus Iridum is bigger but its on the rim rather than inside). But I don't think it is observed much because its floor lacks a central peak and its small pits, unlike Plato's, haven't become known as a test for seeing and optics. But south of Archimedes is an area that is even less often observed. The Archimedes Mountains are two crude arcs that run NE to SW, with a gentle curve inwards towards Imbrium. These mountains appear to be part of a 790 km wide inner ring of the Imbrium Basin, probably formed as a mega-terrace, as massive arcs of land slumped toward the hole created by the Imbrium impact. The mountains are in the midst of an area of low hills and small craters. This surface, lighter than nearby mare, is an area of KREEP volcanism called the Apennine Bench. This volcanic material was erupted onto the floor of the Imbrium basin and later was surrounded by normal mare basalts.

— Chuck Wood

Technical Details:
Aug 7, 2004, 10" f/6 Newtonian + 5X Barlow + Phillips Toucam Pro, 3 image mosaic.
KREEP = Potassium, rare-earth elements and phosphorus rich basalts unique to the Imbrium area.

Related Links:
Geology and Composition of the Apennine Mountains
Lunar Orbiter IV View

Tomorrow's LPOD: Hundred Year Old Hevel

<img src="MainPage/spacer.gif" width="640" height="1">


Author & Editor:
Charles A. Wood

Technical Consultant:
Anthony Ayiomamitis

Contact Webmaster

A service of:
<a class="one" href="http://www.observingthesky.org/">ObservingTheSky.Org</a>

Visit these other PODs:
<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>

 


COMMENTS?

Click on this icon File:PostIcon.jpg at the upper right to post a comment.

Retrieved from "https://www2.lpod.org/index.php?title=August_31,_2004&oldid=11614"