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Geochemistry of the Othris Ophiolite, Greece: Evidence for Refertilization? |
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| Authors: | BARTH, MATTHIAS G. MASON, PAUL R. D. DAVIES, GARETH R. DIJKSTRA, ARJAN H. DRURY, MARTYN R. |
| Affiliation: | 1 VENING MEINESZ RESEARCH SCHOOL OF GEODYNAMICS, FACULTEIT AARDWETENSCHAPPEN, UNIVERSITEIT UTRECHT, BUDAPESTLAAN 4, 3584 CD UTRECHT, THE NETHERLANDS 2 FACULTEIT DER AARD- EN LEVENSWETENSCHAPPEN, VRIJE UNIVERSITEIT AMSTERDAM, DE BOELELAAN 1085, 1081 HV AMSTERDAM, THE NETHERLANDS 3 DEPARTMENT OF GEOLOGY, UNIVERSITY OF LEICESTER, UNIVERSITY ROAD, LEICESTER LE1 7RH, UK |
| Abstract: | The Othris peridotite massif, Greece, shows conflicting evidencefor a mid-ocean ridge and supra-subduction zone tectonic settingwith the presence of plagioclase peridotite that may representan area of either incomplete melt extraction, or melt impregnationand accumulation. To address these problems we focus on a 3km continuous section in the Fournos Kaïtsa area, consistingof layers of harzburgite, plagioclase harzburgite and plagioclaselherzolite with accurately known structural and petrographiccontrol. Refractory, Cr-rich spinel compositions and light rareearth element depleted clinopyroxenes in the harzburgites areconsistent with |
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