User talk:Jopparn

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[edit] Craters on the Moon, again.

Hello again! I have another question that I would appreciate if you could take some time to answer! In the second piece in the article about Alphonsus (crater) it says: "This pyramid-shaped formation rises to a height of 1.5 km above the interior surface. It is not volcanic in origin, but rather is made of anorthosite like the lunar highlands.".

As I have understood it anorthosite is of volcanic origin. Could you please explain what you mean? Cheers. / Jopparn (talk) 02:26, 10 February 2008 (UTC)

The rise was not created by a volcanic eruption.—RJH (talk) 17:06, 12 February 2008 (UTC)

But is it not volcanic in orgin anyway (because of the fact that it´s built out of old volcanic material)? Jopparn (talk) 20:15, 12 February 2008 (UTC)