Articles | Volume 32, issue 6
Eur. J. Mineral., 32, 587–612, 2020
https://doi.org/10.5194/ejm-32-587-2020
Eur. J. Mineral., 32, 587–612, 2020
https://doi.org/10.5194/ejm-32-587-2020

Research article 04 Nov 2020

Research article | 04 Nov 2020

Contaminating melt flow in magmatic peridotites from the lower continental crust (Rocca d'Argimonia sequence, Ivrea–Verbano Zone)

Marta Antonicelli et al.

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Cited articles

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Barnes, S. J., Mole, D. R., Le Vaillant, M., Campbell, M. J., Verrall, M. R., Roberts, M. P., and Evans, N. J.: Poikilitic textures, heteradcumulates and zoned orthopyroxenes in the Ntaka Ultramafic Complex, Tanzania: implications for crystallization mechanisms of oikocrysts, J. Petrol., 57, 1171–1198, 2016. 
Berno, D., Tribuzio, R., Zanetti, A., and Hémond, C.: Evolution of mantle melts intruding the lowermost continental crust: constraints from the Monte Capio-Alpe Cevia mafic-ultramafic sequences (Ivrea-Verbano Zone, northern Italy), Contrib. Mineral. Petr., 175, 2, https://doi.org/10.1007/s00410-019-1637-8, 2020. 
Bertolani, M. and Loschi-Ghittoni, A. G.: La zona a ultrabasiti della Rocca D'Argimonia nelle Prealpi Biellesi. La petrografia, Rend. Soc. Ital. Mineral. Petr., 35, 791–813, 1979. 
Bindeman, I. N., Ponomareva, V. V., Bailey, J. C., and Valley, J. W.: Volcanic arc of Kamchatka: a province with high-δ18O magma sources and large-scale 18O/16O depletion of the upper crust, Geochim. Cosmochim. Act., 68, 841–865, 2004. 
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We present a petrological⁠–geochemical investigation of peridotites of magmatic origin from the Ivrea⁠–Verbano Zone (Italian Alps), a large-scale section of lower continental crust. The main purpose is to provide new insights into the processes governing the evolution of primitive mantle magmas. We propose that studied peridotites were formed by reaction of a melt-poor olivine-rich crystal mush, or a pre-existing peridotite, with upward-migrating melts possessing a substantial crustal component.