A Neogene back-arc origin for the Banda Sea basins: geochemical and geochronological constraints from the Banda ridges (East Indonesia)
作者: Christian HonthaasJean-Pierre RéhaultRené C MauryHervé BellonChristophe HémondJacques-André MalodJean-Jacques CornéeMichel VilleneuveJoseph CottenSafri BurhanuddinHervé GuillouNicolas Arnaud
作者单位: 1UMR 6538 `Domaines océaniques', Université de Bretagne Occidentale, 6 Avenue Le Gorgeu, B.P. 809, F-29285 Brest, France
2UPRESA 6019 `Dynamique des récifs et des plates-formes carbonatées', case 67, Université de Provence, F-13331 Marseille Cedex 03, France
3Department of Geology, University of Ujung Pandang, Ujung Pandang, Indonesia
4Groupe de Géochimie Isotopique-Géochronologie, Centre des Faibles Radioactivités, Laboratoire mixte CNRS/CEA, Avenue de la Terrasse, F-91198 Gif-sur-Yvette, France
5UMR 6524 `Magmas et volcans', Institut de Géologie, 5 Rue Kessler, F-63038 Clermont-Ferrand, France
刊名: Tectonophysics, 1998, Vol.298 (4), pp.297-317
来源数据库: Elsevier Journal
DOI: 10.1016/S0040-1951(98)00190-5
关键词: back-arc basinsvolcanicsK–Ar and Ar–Ar datinggeochemistryBanda SeaIndonesia
原始语种摘要: Abstract(#br)Dredgings conducted during the French–Indonesian cruises Banda Sea II and III collected volcanic rocks from several ridges of the Banda Sea area (Tukang Besi ridge, site 218; Lucipara ridge, sites 214 and 305; Nieuwerkerk–Emperor of China, sites 219 and 220). With the exception of one 46-Ma-old N-MORB type basalt, thought to belong to an ophiolitic complex, K–Ar and Ar–Ar datings indicate that all the dredged volcanics are Neogene. They range in age from ca. 10 Ma (Tukang Besi back-arc basalts) to 8–7 Ma (Nieuwerkerk–Emperor of China calc-alkaline andesites) and to 7–3 Ma (Lucipara OIB-type transitional basalts and cordierite-bearing andesites). Radiogenic isotopic signatures of andesites are consistent with an AFC (Assimilation coupled with Fractional Crystallization)...
全文获取路径: Elsevier  (合作)
分享到:
来源刊物:
影响因子:2.684 (2012)

×