Strontium peridotite massifs

The distribution of lithophile trace elements (REE + mbidium, caesium, strontium, barium, yttrium, zirconium, hafnium, niobium, tantalum, thorium, and uranium) normalized to primitive mantle (PM) values are illustrated in Figure 16 for a range of peridotite lithologies from the Ronda orogenic Iherzolite massif, and in Figure 17 for ophiolitic and abyssal refractory peridotites. 

Ionov et ai, 1997). Both strontium and barium are higher in amphibole from xenohths than those from massif peridotites (e.g., Vannucci et ai, 1995). Numerous ion-probe and laser/solution ICP-MS studies have found wide variation in amphibole REE patterns depending on textural context and tectonic setting (Witt- Eickschen and Harte, 1994 Vannucci et al, 1995 Ionov and Hofmann, 1995 Johnson et al, 1996 Chazot etai, 1996 Vasellieta/., 1995 Ionov eta/., 1997 Pearson and Nowell, 2002 Gregoire et ai, 2002). 

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