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Summary: Cold subduction and the formation of lawsonite eclogite
constraints from prograde evolution of eclogitized pillow lava
from Corsica
E. J. K. RAVNA,1
T. B. ANDERSEN,2
L. JOLIVET3
AND C. DE CAPITANI4
1
Department of Geology, University of Tromsø, N-9037 Tromsø, Norway (erling.ravna@uit.no)
2
Department of Geosciences and PGP, University of Oslo, PO Box 1047, Blindern, 0316 Oslo, Norway
3
ISTO, UMR 6113, Universite´ dÕOrle´ans, 1A Rue de la Fe´rollerie, 45071 Orle´ans, Cedex 2, France
4
Mineralogisch-Petrographisches Institut, Universita¨t Basel, Bernoullistrasse 30, 4056 Basel, Switzerland
ABSTRACT A new discovery of lawsonite eclogite is presented from the Lanco^ ne glaucophanites within the Schistes
Lustre´ s nappe at De´ file´ du Lanco^ ne in Alpine Corsica. The fine-grained eclogitized pillow lava and inter-
pillow matrix are extremely fresh, showing very little evidence of retrograde alteration. Peak assemblages
in both the massive pillows and weakly foliated inter-pillow matrix consist of zoned idiomorphic
Mg-poor (<0.8 wt% MgO) garnet + omphacite + lawsonite + chlorite + titanite. A local overprint
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