plagiogranites in lherzolites and gabbros of the Piedmont-Ligurian ocean basin Laura Borsi a,b,*, Urs Schiirer...lsotopica, CNR, Via C. Maffi, 36. 1-56100 Pisa, Italy L, Dipartimento di Scienze della Terra, Unicersith...Unicersith di Genoca, Corso Europa 26, 1-16132 Genova, Italy Received 5 September 1995: accepted 14 February...Voltri Group, blueschist degree in the Sestri Voltaggio samples, and prehnite-pumpellyite facies in the...plate segment, preceding wider opening of the Piedmont-Ligurian ocean basin and pillow basalt deposition |