The origin of intermediate and evolved lavas in the Marquesas archipelago: an example from Nuku Hiva island (French Polynesia)
作者: Christelle LegendreRené C. MauryDominique SavanierJoseph CottenCatherine ChauvelChristophe HémondClaire BollingerGérard GuilleSylvain BlaisPhilippe Rossi
作者单位: 1UMR 6538, IUEM, Université de Bretagne Occidentale, 6 avenue Le Gorgeu, CS 93837, 29238 Brest Cedex 3, France
2BRGM, B.P. 6009, 45060 Orléans cedex 2, France
3UMR 5025, LGCA, Université Joseph Fourier, 1381 rue de la Piscine, 38000 Grenoble, France
4UMR 6538, IUEM, Université de Bretagne Occidentale, place N. Copernic, 29280 Plouzané, France
5CEA/LDG, B.P. 12, 91680 Bruyères-le-Chatel, France
6UMR 6118, Géosciences Rennes, Université de Rennes 1, 35042 Rennes, France
刊名: Journal of Volcanology and Geothermal Research, 2004, Vol.143 (4), pp.293-317
来源数据库: Elsevier Journal
DOI: 10.1016/j.jvolgeores.2004.12.001
关键词: hawaiitestrachytesfractional crystallisationpartial meltingalkaline seriesFrench Polynesia
原始语种摘要: Abstract(#br)The Nuku Hiva Pliocene island (Marquesas, French Polynesia) is composed of a large half-collapsed tholeiitic shield volcano (the Tekao edifice), the caldera of which is filled up by the younger Taiohae volcano. The latter edifice is characterised by a complex magmatic association including minor mafic lavas (olivine tholeiites, alkali basalts and basanites), abundant intermediate lavas (hawaiites with subsidiary mugearites, both covering 47% of the surface of the volcano) and lesser amount of evolved lavas (K-rich and Na-rich trachytes and minor benmoreites, covering 25% of the edifice). Most intermediate and evolved Taiohae lavas are amphibole-rich and crystallised under high oxygen fugacities. The mafic Taiohae lavas originated from lower degree of melting of mantle sources...
全文获取路径: Elsevier  (合作)
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