26/07/2009 Greece VI: Passive Activity

Since it has now cooled down significantly, Dina and myself decided to take Annie back to the outcrops studied last year, near Fotino. There's plenty more granodiorite than we thought last year (partially due to my being swayed by the reports of 'pebbles' within some of the intrusives), but some of the faults we found still separate intrusives and sediments, and the partial melting is still extremely interesting.

Definitely a coal seam

Dina had the bright idea that the faults may be graben systems, which seems obvious, but given the core complex conversations we had with Annie and Dimitri before either of us saw the outcrops, it hadn't crossed our minds. I think the idea has the potential to explain almost eveerything we see in the area, and can be combined into a regional picture; that of development of the Triassic Pelagonian Passive Margin. Extension=faulting and shearing=mantle melt=remelting of granitic material and intrusion of basic dykes into the continental basement and overlying sediments. Problem solved?