Geo-ablative Melt

A new post at http://craterhunter.wordpress.com/2010/07/03/fire-cloud-rocks/ is basically an update on ignimbrites – as perceived by the author. The word ignimbrite means something like ‘fire cloud rock’ but he goes on to say they were produced by thermal explosive processes of extraterrestrial origin. Volcnic Tuff and Impact Melt are two examples of ignimbrites but he wishes to add a third – with an origin in blast.