Difference between revisions of "July 28, 2004"
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=Cognitum Kipuka= | =Cognitum Kipuka= | ||
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| + | <table width="85%" border="0" align="center" cellpadding="6" cellspacing="2"> | ||
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| + | <td><h2 align="left">Cognitum Kipuka</h2></td> | ||
| + | <td><h2 align="right">July 28, 2004</h2></td> | ||
| + | </tr> | ||
| + | </table> | ||
| + | <table width="85%" border="0" align="center" cellpadding="6" cellspacing="2"> | ||
| + | <tr> | ||
| + | <td colspan="2"><div align="center"> | ||
| + | <img src="images/LPOD-2004-07-28.jpeg" name="Image1" width="439" height="423" border="0" id="Image1"> | ||
| + | </div></td> | ||
| + | </tr> | ||
| + | </table> | ||
| + | <table width="100%" border="0" cellpadding="8"> | ||
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| + | <td><div align="center" span class="main_sm">Image Credit: [http://www.lpi.usra.edu/research/apollo/" class="one Apollo 16 frame 120-19247 ]</div></td> | ||
| + | </tr> | ||
| + | </table> | ||
| + | <br> | ||
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| + | <table class="story" border="0" bgcolor="#FFFFFF" width="90%" cellpadding="10" align="center"><tr><td> | ||
| + | <p class="story" align="center"><b>Cognitum Kipuka</b></p> | ||
| + | <p class="story" align="left"> | ||
| + | Kipuka is a Hawaiian word for an island. In volcanology it is an island of older land surrounded by a younger lava flow. In the middle of Mare Cognitum - the Known Sea (known because it is where Ranger 7 acquired the first high resolution images of the Moon) - are a number of kipukas. In fact, Mare Insularum, Mare Nubium and the southern end of Oceanus Procellarum are all shallow seas with relict crater rims poking up. But kipukas are usually thought of as being flatter than crater rims - like previous flat-lying ground that is preserved just because it happened to be a little higher than younger lavas. In this case, the kipuka is an 18 km long, D-shaped piece of lighter-hued land that has a Greek letter designation: Darney Chi. Compared to the surrounding dark mare, the surface of Chi looks older because it has more "large" craters and is crossed by almost eroded away rilles. The fact that the western edge of Chi is straight-sided - as is to a lesser degree the ridges to the west - suggests that a graben (a fault-bounded linear depression) may occur on the left side of Chi. <blockquote> | ||
| + | <p align="right"> — [mailto:chuck@observingthesky.org Chuck Wood]</p> | ||
| + | </blockquote> | ||
| + | <p><b>Related Links: </b><br> | ||
| + | [http://volcanoes.usgs.gov/Products/Pglossary/kipuka.html A Hawaiian Kipuka] <br> | ||
| + | [http://www.lpi.usra.edu/research/lunar_orbiter/bin/info.shtml?342 Lunar Orbiter IV View] <br> | ||
| + | Rukl Chart 42 </p> | ||
| + | <p><b>Tomorrow's LPOD:</b> EAW & GPK</p> | ||
| + | |||
| + | <p><img src="MainPage/spacer.gif" width="640" height="1"></p></td> | ||
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| + | </tr> | ||
| + | </table> | ||
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| + | <br> | ||
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| + | <table width="100%" border="0" cellspacing="2" cellpadding="4"> | ||
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| + | <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> </p> | ||
Revision as of 14:41, 4 January 2015
Cognitum Kipuka
Cognitum Kipuka |
July 28, 2004 |
<img src="images/LPOD-2004-07-28.jpeg" name="Image1" width="439" height="423" border="0" id="Image1"> |
Image Credit: " class="one Apollo 16 frame 120-19247 |
|
Cognitum Kipuka Kipuka is a Hawaiian word for an island. In volcanology it is an island of older land surrounded by a younger lava flow. In the middle of Mare Cognitum - the Known Sea (known because it is where Ranger 7 acquired the first high resolution images of the Moon) - are a number of kipukas. In fact, Mare Insularum, Mare Nubium and the southern end of Oceanus Procellarum are all shallow seas with relict crater rims poking up. But kipukas are usually thought of as being flatter than crater rims - like previous flat-lying ground that is preserved just because it happened to be a little higher than younger lavas. In this case, the kipuka is an 18 km long, D-shaped piece of lighter-hued land that has a Greek letter designation: Darney Chi. Compared to the surrounding dark mare, the surface of Chi looks older because it has more "large" craters and is crossed by almost eroded away rilles. The fact that the western edge of Chi is straight-sided - as is to a lesser degree the ridges to the west - suggests that a graben (a fault-bounded linear depression) may occur on the left side of Chi. Related Links: Tomorrow's LPOD: EAW & GPK <img src="MainPage/spacer.gif" width="640" height="1"> |
Author & Editor: Technical Consultant: A service of: Visit these other PODs: |
COMMENTS?
Click on this icon File:PostIcon.jpg at the upper right to post a comment.
