Melilite-bearing lavas in Mayotte (France): An insight into the mantle source below the Comores
作者: Anne-Aziliz PelleterMartial CaroffCarole CordierPatrick BacheleryPierre NehligDelphine DebeufNicolas Arnaud
作者单位: 1UMR CNRS no 6538 Domaines Océaniques, Institut Universitaire Européen de la Mer, Université de Brest, 6 avenue Victor Le Gorgeu, CS 93837, F-29238 Brest Cédex 3, France
2Université Grenoble Alpes, ISTerre, F-38000 Grenoble, France
3CNRS, ISTerre, F-38041 Grenoble, France
4Laboratoire Magmas et Volcans, UMR no 6524 CNRS-IRD-Université Blaise Pascal, Observatoire de Physique du Globe de Clermont-Ferrand, 5, rue Kessler, F-63038 Clermont-Ferrand Cédex, France
5Bureau de Recherches Géologiques et Minières, 3, avenue Claude-Guillemin, BP 36009, F-45060 Orléans Cédex 2, France
6Laboratoire GéoSciences Réunion, Faculté des Sciences et Technologies, 15, avenue René Cassin, CS 92003, F-97744 Saint-Denis Cédex 9, La Réunion, France
7Géosciences Montpellier, UMR 5243, CC 60, Université Montpellier 2, Place E. Bataillon, F-34095 Montpellier Cédex 5, France
刊名: LITHOS, 2014, Vol.208-209 , pp.281-297
来源数据库: Elsevier Journal
DOI: 10.1016/j.lithos.2014.09.012
关键词: ComoresOcean island basaltsOlivine melilititeHIMUMantle heterogeneityMetasomatism
原始语种摘要: Abstract(#br)Ocean island basalts (OIB) from the Comores archipelago (Indian Ocean) display mineralogical and geochemical features different from the other Indian OIB. We present here new geochronological data ( 40 Ar/ 39 Ar), major and trace element compositions and isotopic (Sr, Nd, Pb) ratios of silica-undersaturated alkaline rocks from Mayotte, the oldest island of the Comores. Two trends are defined using major element composition: (1) a highly silica-undersaturated trend which includes basanites, (melilite-bearing) nephelinites, intermediate lavas and phonolites from the southern part of the island and (2) a moderately silica-undersaturated trend which is mainly represented by alkali basalts, basanites, intermediate lavas and phonolites from the northern part of the island. Both...
全文获取路径: Elsevier  (合作)
分享到:
来源刊物:
影响因子:3.779 (2012)

×
关键词翻译
关键词翻译
  • bearing 方位
  • undersaturated 欠饱和的
  • mantle 地幔
  • France 法国法郎
  • island 
  • northern 北方的
  • insight 识别力
  • radiogenic 放射性衰变产生的
  • component 成分
  • depleted 废弃的