Geochemical Evidence for Mantle Origin and Crustal Processes in ...
Geochemical Evidence for Mantle Origin and Crustal Processes in ...
Geochemical Evidence for Mantle Origin and Crustal Processes in ...
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JOURNAL OF PETROLOGY VOLUME 46 NUMBER 6 JUNE 2005<br />
Fig. 8. Harker diagrams show<strong>in</strong>g selected major (wt %, normalized on an anhydrous basis) <strong>and</strong> trace elements (<strong>in</strong> ppm) plotted aga<strong>in</strong>st silica (a–d)<br />
or MgO (e <strong>and</strong> f ). Xenoliths shown are granodiorites (samples 96341B, 9490B, <strong>and</strong> 95142C) <strong>and</strong> metas<strong>and</strong>stone sample 95142A. Analytical data<br />
are from Table 1. FV, flank<strong>in</strong>g vents; Gd, granodiorite; Sdst., s<strong>and</strong>stone.<br />
heterogeneous mantle source. The relatively flat HREE<br />
tails of these least evolved Popocatépetl <strong>and</strong> FV samples<br />
suggest a garnet-free source <strong>and</strong> there<strong>for</strong>e relatively<br />
shallow depths of magma genesis (
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