: See this thread for background on this project: Moon Zoo ChallengeLocation
: Mare Vaporum (5.3E, 18.6N).Images
, M106841323RE Discovery
: From the Apollo eraDescription
: A semi-circular depression filled with an irregular rough floor, peppered with
blob-like lava extrusions, often surrounded by a shallow moat.Interest
: For many years after the Apollo era, this formation proved a mystery. One idea was
that based upon the apparent lack of craterlets on the floor, it was formed geologically
recently, perhaps due to explosive outgassing where the top soil had been blown away
leaving underlying bedrock. However LROC scientists have since shown that craters are
present in the irregular floor area, so it is no longer deemed to be geologically young.
Nevertheless it would be a good idea to keep a look out for similar features elsewhere,
just in case some were caused by outgassing.Related Links
See this thread for images and information about the Ina formation: Ina Images
And this Image of the Week
posting for further information: Ina
Also this Nasa article: Is the Moon Still Alive?
And one more: National Geographic News
from the 43rd Lunar and Planetary Science Conference: Lunar Meniscus Hollows
|The Ina formation|| ~ ||Enlarged view of floor and lava extrusions |
Please post any Ina-like features you find in this thread. Don't forget a picture, the strip reference (LROC / NAC reference) and the approximate latitude and longitude.