Melting Relations of Some Lavas of Réunion Island, Indian Ocean

C. E. Tilley, R. N. Thompson, W. J. Wadsworth and B. G. J. Upton
Department of Mineralogy and Petrology, University of Cambridge
Department of Geology, University of Manchester
Department of Geology, University of Edinburgh

Summary: The one-atmosphere experimental melting and crystallization relations of some basic lavas of Réunion Island, Indian Ocean, are investigated. They comprise products of the extinct volcano Piton des Neiges and the active volcano Piton de la Fournaise. New data and interpretations are presented for the 1939 oceanite and its contained glass, originally described by Lacroix (1939a). The liquidus v. iron enrichment curves for these Réunion lavas fall about 20 °C above those of the lavas of Kilauea, Hawaii. The primitive liquid reaching the surface contained about 10 % MgO.

Mineralogical Magazine; September 1971 v. 38; no. 295; p. 344-352; DOI: 10.1180/minmag.1971.038.295.09
© 1971, The Mineralogical Society
Mineralogical Society (