Abstract

Parental magmas of the Cape Verde Islands are high-Mg foidites, picrobasalts, and basanites. The rocks can be classified into the following two differentiated series: (1) a high-alkali series, which includes picrites, high-Mg foidites, low-Mg-foidites, and phonolites; and (2) a series of moderate alkalinity, which includes picrobasalts, basanites, tephrites, tephrophonolites, phonotephrites, phonolites, and trachytes.

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