Éruptions simultanées de basalte alcalin et de hawaiite au mont Cameroun (28 mars–17 avril 1999)
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- 作者：Dé ; ruelle ; Bernard ; Bardintzeff ; Jacques-Marie ; Cheminé ; e ; Jean-Louis ; Ngounouno ; Ismaï ; la ; et. al.
- 关键词：volcanic eruption ; Mt. Cameroon ; alkali basalt and hawaiite ; é ; ruption volcanique ; mont Cameroun ; basalte alcalin et hawaiite
- 刊名：Comptes Rendus de l'Academie des Sciences Series IIA Earth and Planetary Science
- 出版年：2000
- 出版时间：October 30, 2000
- 年：2000
- 卷：331
- 期：8
- 页码：525-531
- 全文大小：727 K
文摘
Mt. Cameroon erupted simultaneously in March–April 1999 in two distinct places on its southwestern flank. A hawaiite (with An 83-76 plagioclase phenocrysts) and an alkali basalt (with Fo 84-80 olivine phenocrysts) have been simultaneously emitted respectively at 1 400 and 2 650 m of altitude a.s.l. The eruption of these co-magmatic lavas attests to the occurrence of a unique magmatic reservoir inside which the magma differentiation took place by crystal setting of denser mineral phases.