Quote:
Originally Posted by Gladiator
Renormalised,
Thank you for your analysis! 
Now we all know something more! |
That's Ok
I'm a geologist by profession and planetary geology is one of my forte's.
Most of those cones are very old. They formed from the last gasp melts erupted during the formation of the mare, after most of the basaltic magmas of the mare had solidified. There may still be some last gasp volcanism on the Moon...witness the occasional gaseous flare that occurs there (lunar transient phenomena), but most likely nothing eruptive enough to create a pyroclastic cone.