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Ytterbium peridotites

The middle REE (MREE) show AI2O3 covariation patterns intermediate between those of heavy and TREE. Samarium shows both a rough positive correlation reminiscent of the one observed for ytterbium, and variations irrespective of AI2O3 comparable to those observed for cerium (i.e., higher samarium in orogenic peridotites, especially the metasomatized samples, than in ophiolitic and abyssal peridotites). [Pg.828]

Ytterbium versus AI2O3 covariation trend and fertile orogenic Iherzolites. Similar to the correlations observed between major (and minor transition) elements, the good correlation between ytterbium and AI2O3 in tectonically emplaced and abyssal peridotites (Figure 10) is classically ascribed to variable degrees of melt extraction. However, any of the alternatives envisioned for the major elements (melt-rock reactions, melt... [Pg.837]

See other pages where Ytterbium peridotites is mentioned: [Pg.789]    [Pg.828]    [Pg.829]    [Pg.833]    [Pg.838]    [Pg.841]    [Pg.905]    [Pg.911]    [Pg.1355]    [Pg.86]    [Pg.126]    [Pg.127]    [Pg.131]    [Pg.135]    [Pg.136]    [Pg.139]    [Pg.203]    [Pg.209]   
See also in sourсe #XX -- [ Pg.129 , Pg.130 , Pg.132 , Pg.133 , Pg.135 , Pg.138 , Pg.140 , Pg.146 ]



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Peridotites

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