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Dear Ronan (et al.), You asked in early October about examples of contact metam. overprinting regional metam. in metabasites. Catching up with my e-mail I realise you've had very few replies, so here's an offering. The phenomenon is in fact very common in the Scottish Highlands. Here Precambrian and Lower Palaeozoic regional metamorphic rocks of the Dalradian and Moine series, were subjected to contact metamorphism in the aureoles of diorite- granite bodies with ages near 400Ma. Thus there are good examples of greenschist and amphibolite facies regional metabasites being converted to amphibole-hornfels and pyroxene-hornfels rocks with granoblastic textures. Unfortunately I can't think of recent work (with analyses etc) that has been done on these rock types. But there are some classic petrographic references e.g. Tilley (1924) on 'Contact metamorphism in the Comrie area' in Quarterley Journal of the Geological Society vol 80, p. 22-71. Harker 1939, 'Metamorphism' p. 331 and Fig. 174. Ben Ben Harte Dept Geology & Geophysics, University of Edinburgh, King's Buildings, Edinburgh EH9 3JW, Scotland, UK (FAX 44 131 668 3184) FAX: [44] (0)131 668 3184