Having to send this early as am being coerced into 'the annual holiday' -where some one has to go somewhere else for some reason-at least it's only as far as Sussex by the sea my hearties paddles will be paddled-swim zimmerframe zimmercrafty over to Franceland!!(or not) P your P MAGMA Their relationship was not unlike the rock cycle from basic magma the three basic states igneous, metamorphic and sedimentary but going through cycles of weathering heating pressuring producing metamorphism compression, cementation lithifaction cooling solidification crystallisation crustal thrustings volcanic activity and then of course the normal remelting but at the moment it was going through a period of cooling intense cooling. Pmcmanus RaynesParkWimbledon n878