FREE Stock Photos from PikWizard
  • Are You looking for:

  • city

  • landscape

  • adult

  • winter

  • technology

Photos Videos
More

FREE image of Chappy Oblique

Looking east to west across the rim and down into Chaplygin crater reveals this beautiful example of a fresh young crater and its perfectly preserved ejecta blanket. The delicate patterns of flow across, over, and down local topography clearly show that ejecta traveled as a ground hugging flow for great distances, rather than simply being tossed out on a ballistic trajectory. Very near the rim lies a dark, lacy, discontinuous crust of now frozen impact melt. Clearly this dark material is on top of the bright material so it was the very last material ejected from the crater.  The melt was formed as the tremendous energy of impact was converted to heat and the lunar crust was melted at the impact point. As the crater rebounded and material sloughed down the walls of the deforming crater the melt was splashed out over the rim and froze. Its low reflectance is mostly due to a high percentage of glass because the melt cooled so quickly that minerals did not have time to crystallize. The fact that the delicate splash patterns are so well preserved testifies to the very young age of this crater. But how young?  For comparison &quot;Chappy&quot; (informal name) is 200 m larger than Meteor crater (1200 m diameter) in Arizona, which is about 50,000 years old. Craters of this size form every 100,000 years or so on the Moon and the Earth. Since there are very few superposed craters on Chappy, and its ejecta is so perfectly preserved it may be much younger than Meteor crater. However, we can't know the true true absolute age of &quot;Chappy&quot; until we can obtain a sample of its impact melt for radiometric age dating.  Investigate all of Chappy's ejecta, at full resolution: <a href="http://lroc.sese.asu.edu/posts/901" rel="nofollow">lroc.sese.asu.edu/posts/901</a>  Credit: NASA/Goddard/Arizona State University/LRO/LROC

Looking east to west across the rim and down into Chaplygin crater reveals this beautiful example of a fresh young crater and its perfectly preserved ejecta blanket. The delicate patterns of flow across, over, and down local topography clearly show that ejecta traveled as a ground hugging flow for great distances, rather than simply being tossed out on a ballistic trajectory. Very near the rim lies a dark, lacy, discontinuous crust of now frozen impact melt. Clearly this dark material is on top of the bright material so it was the very last material ejected from the crater. The melt was formed as the tremendous energy of impact was converted to heat and the lunar crust was melted at the impact point. As the crater rebounded and material sloughed down the walls of the deforming crater the melt was splashed out over the rim and froze. Its low reflectance is mostly due to a high percentage of glass because the melt cooled so quickly that minerals did not have time to crystallize. The fact that the delicate splash patterns are so well preserved testifies to the very young age of this crater. But how young? For comparison &quot;Chappy&quot; (informal name) is 200 m larger than Meteor crater (1200 m diameter) in Arizona, which is about 50,000 years old. Craters of this size form every 100,000 years or so on the Moon and the Earth. Since there are very few superposed craters on Chappy, and its ejecta is so perfectly preserved it may be much younger than Meteor crater. However, we can't know the true true absolute age of &quot;Chappy&quot; until we can obtain a sample of its impact melt for radiometric age dating. Investigate all of Chappy's ejecta, at full resolution: <a href="http://lroc.sese.asu.edu/posts/901" rel="nofollow">lroc.sese.asu.edu/posts/901</a> Credit: NASA/Goddard/Arizona State University/LRO/LROC

FREE Stock Photos from PikWizard78 downloads
FREE Stock Photos from PikWizard35 favs
FREE Stock Photos from PikWizard129 views
FREE Stock Photos from PikWizard

Edit Image

For Free

Share

License:

CC0 (Creative Commons Zero)

  • Free for personal and commercial use.

  • No attribution required.
Learn more about the license »Report Abuse »

Credit Photo:

If you would like to credit the Photo, here are some ways you can do so

Preview:

Click below to copy the code:

Popular Image Categories
Popular Video Categories