Browsing by Subject "Mesozoic mafic magmatism"
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Geologia e petrografia do picrito do boqueirão e sua correlação com outras rochas máficas-ultramáficas no SW do escudo Sul-Riograndense
(2014) [Work completion of graduation]Picrites are ultramafic, volcanic or hypabyssal rockas, which contain abundant olivine and have high MgO (> 12wt. %) and low alkalis (< 3 wt. %) contents. These rocks represent the crystallization of mantle-derived primitive ...