Variation diagram normalized to primitive mantle (Hofmann 1988) of two lamprophyre dykes ( open symbols; CAP 4 and CAP 5) and the most mafic melt inclusions in amphibole from intrusive and extrusive rocks ( full symbols). Melt inclusion data suggest a more primitive pattern than that observed in lamprophyre dykes. Trace element concentrations in bulk rocks were obtained using LA-ICPMS analysis of lithium-tetraborate glass pellets
Element abundances normalized to primitive mantle (Hofmann 1988 ) are compared in Fig. 7 , showing the flattest patterns for melt inclusions and somewhat greater enrichment of the least compatible elements in lamprophyre dykes.
These dykes show progressively decreasing mantle-normalized trace element patterns (Fig. 7 ), comparable to those described for basaltic andesites from various South American (e.g., Thorpe et al.
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