Metasomatism in the lithospheric mantle beneath Middle Atlas (Morocco) and the origin of Fe- and Mg-rich Wehrlites

Journal of Petrology

Volumn 50, Issue 2, 2009, Pages 197-249

  Raffone, N ^a,b   Chazot, G ^c   Pin, C ^d   Vannucci, R ^a,b   Zanetti, A ^a  

^a CNR   (Italy)

^b UNIVERSITY OF PAVIA   (Italy)

^c INSTITUT UNIVERSITAIRE EUROPÉEN DE LA MER   (France)

^d CNRS   (France)

Author keywords

Lithospheric mantle; Mantle xenoliths; Metasomatism; Morocco; Sr Nd isotopes; Trace elements; Wehrlites

Indexed keywords

ALKALINE ROCK; ASTHENOSPHERE; BASALT; IRON; LITHOSPHERIC STRUCTURE; MAGNESIUM; MANTLE SOURCE; MANTLE STRUCTURE; METASOMATISM; NEODYMIUM ISOTOPE; STRONTIUM ISOTOPE; TRACE ELEMENT; WEHRLITE; XENOLITH;

AFRICA; ATLAS MOUNTAINS; MIDDLE ATLAS; MOROCCO; NORTH AFRICA;

EID: 62149142078     PISSN: 00223530     EISSN: 14602415     Source Type: Journal    
DOI: 10.1093/petrology/egn069     Document Type: Article

References (118)

1. Anders, E. & Grevesse, N. (1989). Abundances of the elements: Meteoritic and solar. Geochimica et Cosmochimica Acta 53, 197-214.
2. Arai, S. (1994). Characterization of spinel peridotites by olivine-spinel compositional relationships: Review and interpretation. Chemical Geology 113, 191-204.
3. Bali, E., Zanetti, A., Szabò, C., Peate, D.W. & Waight, T. E. (2008). A micro-scale investigation of melt production and extraction in the upper mantle based on silicate melt pockets in ultramafic xenoliths from the Bakony-Balaton Highland Volcanic Field (Western Hungary). Contributions to Mineralogy and Petrology 155, 165-179.
4. Ballhaus, C., Berry, R. F. & Green, D. H. (1991a). High pressure experimental calibration of the olivine-orthopyroxene-spinel oxygen geobarometer: Implications for the oxidation state of the upper mantle. Contributions to Mineralogy and Petrology 107, 27-40.
5. Ballhaus, C., Berry, R. F. & Green, D. H. (1991b). High pressure experimental calibration of the olivine-orthopyroxene-spinel oxygen geobarometer: Implications for the oxidation state of the upper mantle (Erratum). Contributions to Mineralogy and Petrology 108, 384.
6. Ban, M., Witt-Eickschen, G., Klein, M & Seck, H. A. (2005). The origin of glasses in hydrous mantle xenoliths from the West Eifel, Germany: incongruent breakdown of amphibole. Contributions to Mineralogy and Petrology 148, 511-523.
7. Beccaluva, L., Azzouni-Sekkal, A., Benhallou, A., Bianchini, G., Ellam, R. M., Marzola, M., Siena, F. & Stuart, F. M. (2007). Intracratonic asthenosphere upwelling and lithosphere rejuvenation beneath the Hoggar swell (Algeria): Evidence from HIMU metasomatised lherzolite mantle xenoliths. Earth and Planetary Science Letters 260, 482-494.
8. Beccaluva, L., Bianchini, G., Ellam, R. M., Marzola, M., Oun, K. M., Siena, F. & Stuart, F. M. (2008). The role of HIMU metasomatic components in the North African lithospheric mantle: Petrological evidence from the Gharyan lherzolite xenoliths, NW Libya. In: Coltorti, M. & Gregoire, M. (eds) Metasomatism in oceanic and continental lithospheric mantle. Geological Society, London, Special Publications 293, 253-277.
9. Bedini, R. M., Bodinier, J.-L., Dautria, J.-M. & Morten, L. (1997). Evolution of LILE-enriched small melt fractions in the lithospheric mantle: A case study from the East African Rift. Earth and Planetary Science Letters 153, 67-83.
10. Bodinier, J.-L., Merlet, C., Bedini, R. M., Simien, F. & Remaïdi, M. (1996). Distribution of niobium, tantalum and other highly incompatible trace elements in the lithospheric mantle: The spinel paradox. Geochimica et Cosmochimica Acta 60, 545-550.
11. Bodinier; J.-L., Menzies, M. A., Shimizu, N., Frey, F. A. & McPherson, E. (2004). Silicate, hydrous and carbonate metasomatism at Lherz, France: Contemporaneous derivatives of silicate melt-harzburgite reaction. Journal of Petrology 45, 299-320.
12. Brey, G. P. & Köhler, T. (1990). Geothermobarometry in four-phase lherzolites II. New thermobarometers, and practical assessment of existing thermobarometers. Journal of Petrology 31, 1353-1378.
13. Brueckner, H. K., Elhaddad, M. A., Hamelin, B., Hemming, S. R., Kroner, A., Reisberg, L. & Seyler, M. (1995). A Pan African origin and uplift for the gneisses and peridotites of Zabargad Island, Red Sea; a Nd, Sr, Pb and Os isotope study. Journal of Geophysical Research 100 22283-22297.
14. Bryndzia, L. T. & Wood, B. J. (1990). Oxygen thermobarometry of abyssal peridotites: The redox state and C-O-H volatile composition of the Earth's sub-oceanic upper mantle. American Journal Science 290 1093-1116.
15. Charlot, R., Choubert, G., Faure-Muret, A. & Hamel, C. (1964). Ages des aïoinites du Maroc Nord-Oriental. Compte Rendu Sommaire de séances de la Société Gédogique de France 41, 309-323.
16. Chazot, G., Menzies, M. A. & Harte, B. (1996a). Determination of partition coefficients between apatite, clinopyroxene, amphibole, and melt in natural spinel lherzolites from Yemen: Implications for wet melting of the lithospheric mantle. Geochimica et Cosmochimica Acta 60, 423-437.
17. Chazot, G., Menzies, M. A. & Harte, B. (1996b). Silicate glasses in spinel lherzolites from Yemen: Origin and chemical composition. Chemical Geology 134, 159-179.
18. Coltorti, M., Bonadiman, C., Hinton, R. W., Siena, F. & Upton, B. G. J. (1999). Carbonatite metasomatism of the oceanic upper mantle: Evidence from clinopyroxenes and glasses in ultramafic xenoliths of Grande Comore, Indian Ocean. Journal of Petrology 40, 133-165.
19. Coltorti, M., Beccaluva, L., Bonadiman, C., Faccini, B., Ntaflos, T. & Siena, F. (2004). Amphibole genesis via metasomatic reaction with clinopyroxene in mantle xenoliths from Victoria Land, Antarctica. Lithos 75, 115-139.
20. Dautria, J. M., Dupuy, C., Takherist, D. & Dostal, J. (1992). Carbonate metasomatism in the lithospheric mantle: Peridotitic xenoliths from a melilititic district of the Sahara basin. Contributions to Mineralogy and Petrology 111, 37-52.
21. Du Dresnay, R. (1988). Recent data on the geology of the Middle Atlas (Morocco). In: Jacobshagen, H. (ed.) The Atlas System of Morocco. Berlin: Springer, pp. 293-320.
22. El Azzab, D. & El Wartiti, M. (1998). Paléomagnétisme des laves du Moyen Atlas (Maroc): Rotations récentes. Comptes Rendus de l'Académie des Sciences 327, 509-512.
23. El Azzouzi, M., Bernard-Griffiths, J., Bellon, H., Maury, R. C., Piqué, A., Fourcade, S., Cotten, J. & Hernandez, J. (1999). Évolution des sources du volcanisme marocain au cours du Néogène. Comptes Rendus de l'Académie des Sciences de Paris; Sciences de la Terre et des Planètes 329, 95-102.
24. Fabriès, J., Bodinier, J. L., Dupuy, C., Lorand, J. P. & Benkerrou, C. (1989). Evidence for modal metasomatism in the orogenic spinel lherzolite body from Caussou (Northeastern Pyrenees, France). Journal of Petrology 30, 199-228.
25. Faul, U. H. (1997). Permeability of partially molten upper mantle rocks from experiments and percolation theory. Journal Geophysical Research 102, 10299-10311.
26. Foley, S. F. & Wheller, G. E. (1990). Parallels in the origin of the geochemical signature of island arc volcanics and continental potassic igneous rocks: The role of residual titanates. Chemical Geology 85, 1-18.
27. Foley, S. F., Petibon, C. M., Jenner, G. A. & Kjarsgaard, B. A. (2001). High U/Th partitioning by clinopyroxene from alkali silicate and carbonatite metasomatism: An origin for Th/U disequilibrium in mantle melts? Terra Nova 13, 104-109.
28. Gaetani, G. A. & Grove, T. L. (1995). Partitioning of rare earth elements between clinopyroxene and silicate melt: Crystal-chemical controls. Geochimica et Cosmochimica Acta 59, 1951-1962.
29. Green, T. H. (1995). Experimental versus natural two-mineral partition coefficients: A 'high-tech' controversy. International Geology Review 37, 851-865.
30. Grégoire, M., Moine, B. N., O'Reilly, S.Y., Cottin, J. Y & Giret, A. (2000). Trace element residence and partitioning in mantle xenoliths metasomatized by high alkaline silicate and carbonate-rich melts (Kerguelen Islands, Indian Ocean). Journal of Petrology 41, 477-509.
31. Grégoire, M., Bell, D. R. & Le Roex, A. P. (2002). Mafic and ultramafic xenoliths from the Kaapvaal Craton (South Africa); trace element evidence from mantle magmatic and metasomatic processes. Geochimica et Cosmochimica Acta 66, Supplement 1, August 15, 290.
32. Haggerty, S. E. (1991). Oxide mineralogy of the upper mantle. Reviews in Mineralogy 25, 355-416.
33. Harmand, C. & Cantagrel, J. M. (1984). Le volcanisme alcalin Tertiaire et Quaternaire du Moyen Atlas (Maroc): Chronologie K/Ar et cadre géodynamique. Journal African Earth Sciences 2, 51-55.
34. Harmand, C. & Moukadiri, A. (1986). Synchronisme entre tectonique compressive et volcanisme alcalin: Exemple de la province Quaternaire du Moyen Atlas (Maroc). Bulletin de la Société Gédogique de France 4, 595-603.
35. Hart, S. R. & Dunn, T. (1993). Experimental cpx/melt partitioning of 24 trace elements. Contributions to Mineralogy and Petrology 113 1-8.
36. Hauri, E. H., Shimizu, N., Dieu, J. J. & Hart, S. R. (1993). Evidence for hotspot-related carbonatite metasomatism in the oceanic upper mantle. Nature 365, 221-227.
37. Hauri, E. H., Wagner, T. P. & Grove, T. L. (1994). Experimental and natural partitioning of Th, U, Pb and other trace elements between garnet, clinopyroxene and basaltic melts. Chemical Geology 117 149-166.
38. Hellebrand, E., Snow; J. E., Hoppe, P. & Hofmann, A. W. (2002). Garnet-field melting and late-stage refertilization in 'residual' abyssal peridotites from the Central Indian Ridge. Journal of Petrology 43, 2305-2338.
39. Hill, E., Wood, B. J. & Blundy, J. D. (2000). The effect of Ca-Tschermaks component on trace element partitioning between clinopyroxene and silicate melt. Lithos 52, 203-215.
40. Hirschmann, M. M. & Stolper, E. M. (1996). A possible role for garnet pyroxenite in the origin of the 'garnet signature' in MORB. Contributions to Mineralogy and Petrology 124, 185-208.
41. Hofmann, A.W. (1997). Mantle geochemistry: The message from oceanic volcanism. Nature 385, 219-229.
42. Ionov, D. A. (1998). Trace element composition of mantle-derived carbonates and coexisting phases in peridotite xenoliths from alkali basalts. Journal of Petrology 39, 1931-1941.
43. Ionov, D. A. & Harmer, R. E. (2002). Trace element distribution in calcite-dolomite carbonatites from Skitskop: Inferences for differentiation of carbonatite magmas and the origin of carbonates in mantle xenoliths. Earth and Planetary Science Letters 198, 495-510.
44. Ionov, D. A., Hofmann, A.W. & Shimizu, N. (1994). Metasomatism-induced melting in mantle xenoliths from Mongolia. Journal Petrology 35 753-785.
45. Ionov, D. A., Bodinier, J. L., Mukasa, S. B. & Zanetti, A. (2002a. Mechanisms and sources of mantle metasomatism: Major and trace element compositions of peridotite xenoliths from Spitsbergen in the context of numerical modelling. Journal Petrology 43, 2219-2259.
46. Ionov, D. A., Mukasa, S. B. & Bodinier, J. L. (2002b). Sr-Nd-Pb isotopic composition of peridotite xenoliths from Spitsbergen: Numerical modelling indicates Sr-Nd decoupling in the mantle by melt percolation metasomatism. Journal of Petrology 43, 2261-2278.
47. Ionov, D. A., Chanefo, I. & Bodinier, J.-L. (2005). Origin of Fe-rich lherzolites and wehrlites from Tok, SE Siberia by reactive melt percolation in refractory mantle peridotites. Contributions to Mineralogy and Petrology 150, 335-353.
48. Ionov, D. A., Chazot, G., Chauvel, C., Merlet, C. & Bodinier, J.-L. (2006). Trace element distribution in peridotite xenoliths from Tok, SE Siberian craton: A record of pervasive, multi-stage metasomatism in shallow refractory mantle. Geochimica et Cosmochimica Acta 70 1231-1260.
49. Jacobsen, S. B. & Wasserburg, G.J. (1980). A two-reservoir recycling model for mantle-crust evolution. Proceedings of the National Academy of Sciences 77, 6298-6302.
50. Johnson, K. T. M. & Dick, H. J. B. (1992). Open system melting and temporal and spatial variation of peridotite and basalt at the Atlantis II Fracture Zone. Journal of Geophysical Research 97, 9219-9241.
51. Johnson, K. T. M., Dick, H. J. B. & Shimizu, N. (1990). Melting in the oceanic upper mantle: An ion microprobe study of diopsides in abyssal peridotites. Journal of Geophysical Research 95, 2661-2678.
52. Kalfoun, F., Ionov, D. A. & Merlet, C. (2002). HFSE residence and Nb/Ta ratios in metasomatized, rutile-bearing mantle peridotites. Earth and Planetary Science Letters 199, 49-65.
53. Kelemen, P. B., Shimizu, N. & Salters, V. J. M. (1995). Extraction of mid-ocean-ridge basalt from the upwelling mantle by focused flow of melt in dunite channels. Nature 375, 747-753.
54. Kinzler, R. J. (1997). Melting of mantle peridotite at pressures approaching the spinel to garnet transition: Application to mid-ocean-ridge basalt petrogenesis. Journal of Geophysical Research 102, 853-874.
55. Kornprobst, J., Piboule, M., Roden, M. & Tabit, A. (1990). Corundum-bearing garnet clinopyroxenites at Beni Bousera (Morocco): original plagioclase-rich gabbros recrystallized at depth within the mantle? Journal of Petrology 31, 717-745.
56. Laurora, A., Mazzucchelli, M., Rivalenti, G., Vannucci, R., Zanetti, A., Barbieri, A. M. & Cingolani, C. A. (2001). Metasomatism and melting in carbonated peridotite xenoliths from mantle wedge: The Gobernador Gregores case (Southern Patagonia). Journal of Petrology 42, 69-87.
57. Leake, B. E., Maresch, W. V., Nickel, E. H., Rock, N. M. S., Schumacher, J. C., Smith, D. C., Stephenson, N. C. N., Ungaretti, L., Whittaker, E. J. W. & Youzhi, G. (1997). Nomenclature of amphiboles. Commission on new mineral names, International Mineralogical Association. Canadian Mineralogist 35, 219-246.
58. Le Bas, M. J., Le Maitre, R. W., Streckeisen, A. & Zanettin, B. (1986). A chemical classification of volcanic rocks based on the total alkali-silica diagram. Journal of Petrology 27, 745-750.
59. Lundstrom, C. C., Shaw; H. F., Ryerson, F. J., Phinney, D. L., Gill, J. B. & Williams, Q. (1994). Compositional controls on the partitioning of U, Th, Ba, Pb, Sr and Zr between clinopyroxene and haplobasaltic melts: implications for uranium series disequilibria in basalts. Earth and Planetary Science Letters 128, 407-423.
60. Maza, M., Briqueu, L., Rivalenti, G., Dautria, J. M. & Bosch, D. (1998). Le complexe annulaire d'âge Oligocène de l'Achkal (Hoggar Centaral, Sud Algérie): Témoin de la transition au Cénozoïque entre les magmatismes tholéitique et alcalin. Évidences par les isotopes du Sr, Nd et Pb. Comptes Rendus de l'Académie des Sciences, Sciences de la Terre et des Planètes 327, 167-172.
61. Mercier, J.-C. C. (1980). Single-pyroxene thermobarometry. Tectonophysics 70, 1-37.
62. Mercier, J. C. C., Benoit, V & Girardeau, J. (1984). Equilibrium state of diopside-bearing harzburgites from ophiolites: Geobarometric and geodynamic implications. Contributions to Mineralogy and Petrology 85, 391-403.
63. Mercier, J.-C. & Nicolas, A. (1974). Textures and fabrics of upper-mantle peridotites as illustrated by xenoliths from basalts. Journal of Petrology 16, 454-487.
64. Moine, B. N., Grégoire, M., O'Reilly, S. Y., Sheppard, M. F. & Cottin, J. Y. (2001). High field strength element fractionation in the upper mantle: Evidence from amphibole-rich composite mantle xenoliths from Kerguelen Islands (Indian Ocean). Journal Petrology 42, 2145-2168.
65. Morimoto, M. (1988). Nomenclature of pyroxenes. Commission on new mineral names, International Mineralogical Association. American Mineralogist 73, 1123-1133.
66. Morishita, T., Arai, S. & Tamura, A. (2003). Petrology of an apatite-rich layer in the Finero phlogopite-peridotite, Italian Western Alps; implications for evolution of a metasomatising agent. Lithos 69, 37-49.
67. ème cycle, Université Blaise-Pascal, Clermont-Ferrand, 150 pp..
68. Moukadiri, A. & Kornprobst, J. (1984). Garnet and/or spinel bearing pyroxenites in alkali basalts near Azrou (Middle Atlas, Morocco): Mantle derived alumina-rich xenoliths related to the 'ariegite-grospydite' trend. In: Kornprobst, J. (ed.) Kimberlites II: The Mantle and Crust Relationship. Amsterdam: Elsevier, pp. 179-189.
69. Mourtada, S. (1997). Pétrogènese des carbonatites et contribution à l'étude des minéralisations associées: Exemple du complexe alcalin de Tamazert (Haut-Atlas Marocain). Thèse de Doctorat, Université Blaise-Pascal, Clermont-Ferrand.
70. Navon, O. & Stolper, E. (1987). Geochemical consequences of melt percolation: Upper mantle as a chromatographic column. Journal of Geology 95, 285-307.
71. Neumann, E. R. & Wulff-Pedersen, E. (1997). The origin of highly silicic melts in mantle xenoliths from Canary Islands. Journal Petrology 38, 1513-1539.
72. Nickel, K. G. & Green, D. H. (1985). Empirical geothermobarometry for garnet peridotites and implications for the nature of the lithosphere, kimberlites and diamonds. Earth and Planetary Science Letters 73, 423-437.
73. Niu, Y. (1997). Mantle melting and mantle extraction processes beneath ocean ridges: Evidence from abyssal peridotites. Journal of Petrology 38, 1047-1074.
74. Ti in petrogenetic studies. American Mineralogist 85, 401-419.
75. O'Reilly, S. Y. & Griffin, W. L. (2000). Apatite in the mantle: implications for metasomatic processes and high heat production in Phanerozoic mantle. Lithos 53, 217-232.
76. Pearson, D. G., Davies, G. R. & Nixon, P. H. (1993). Geochemical constraints on the petrogenesis of diamond facies pyroxenites from Beni Bousera peridotite massif, North Morocco. Journal of Petrology 34, 125-172.
77. Peslier, A. H., Francis, D. & Ludden, J. (2002). The lithospheric mantle beneath continental margins: Melting and melt-rock reaction in Canadian Cordillera xenoliths. Journal of Petrology 43, 2013-2047.
78. Piccardo, G. B., Zanetti, A. & Müntener, O. (2007). Melt/peridotite interaction in the Southern Lanzo peridotite: Field, textural and geochemical evidence. Lithos 94, 181-209.
79. Pin, C. & Santos Zalduegui, J. F. (1997). Sequential separation of light rare-earth elements, thorium and uranium by miniaturised extraction chromatography: Application to isotopic analyses of silicate rocks. Analytica Chimica Acta 339, 79-89.
80. Pin, C., Briot, D., Bassin, C. & Poitrasson, F. (1994). Concomitant separation of strontium and samarium-neodymium for isotopic analysis in silicate samples, based on specific extraction chromatography. Analytica Chimica Acta 298, 209-217.
81. Putirka, K., Mikaelian, H., Ryerson, F. & Shaw; H. (2003). New clinopyroxene-liquid thermometers for mafic, evolved, and volatile-bearing lava compositions, with applications to lavas from Tibet and the Snake River Plain, Idaho. American Mineralogist 88, 1542-1554.
82. Rampone, E., Hofmann, A. W., Piccardo, G. B., Vannucci, R., Bottazzi, P. & Ottolini, L. (1996). Trace element and isotope geochemistry of depleted peridotites from an N-MORB type ophiolite (Internal Ligurides, N Italy). Contributions to Mineralogy and Petrology 123, 61-76.
83. Rampone, E., Romairone, A. & Hofmann, A. W. (2004). Contrasting bulk and mineral chemistry in depleted peridotites: Evidence for reactive porous flow: Earth and Planetary Science Letters 21B, 491-506.
84. Rivalenti, G., Zanetti, A., Mazzucchelli, M., Vannucci, R. & Cingolani, C. A. (2004). Equivocal carbonate markers in the mantle xenoliths of the Patagonia backarc: The Gobernador Gregores case (Santa Cruz Province, Argentina). Contributions to Mineralogy and Petrology 147, 647-670.
85. Rivalenti, G., Zanetti, A., Girardi, V. A. V., Mazzucchelli, M., Tassinari, C. C. G. & Bertotto, G. W. (2007). The effect of the Fernando de Noronha plume on the mantle lithosphere in northeastern Brazil. Lithos 94, 111-131.
86. Rudnick, R. L., McDonough, W. F. & Chappel, B. C. (1993). Carbonatitic metasomatism in the northern Tanzanian mantle. Earth and Planetary Science Letters 114, 463-475.
87. Ryerson, F. J. & Watson, E. B. (1987). Rutile saturation in magmas: implications for Ti-Nb-Ta depletion in orogenic rock series. Earth and Planetary Science Letters 86, 225-239.
88. Takahashi, N. (1992). Evidence for melt segregation towards in the Horoman mantle peridotite complex. Nature 359, 52-55.
89. Takazawa, E., Frey, F. A., Shimizu, N., Obata, M. & Bodinier, J. L. (1992). Geochemical evidence for melt migration and reaction in the upper mantle. Nature 359, 55-58.
90. Tanaka, T., Togashi, S., Kamioka, H., Amakawa, H., Kagami, H., Hamamoto, T., Yuhara, M. et al. (2000). JNdi-1: A neodymium isotopic reference in consistency with La Jolla neodymium. Chemical Geology 168, 279-281.
91. Tiepolo, M., Vannucci, R., Oberti, R., Foley, S. F., Bottazzi, P. & Zanetti, A. (2000). Nb and Ta incorporation and fractionation in titanian pargasite and kaersutite: Crystal-chemical constraints and implications for natural systems. Earth and Planetary Science Letters 176, 185-201.
92. Tiepolo, M., Bottazzi, P., Foley, S. F., Oberti, R., Vannucci, R. & Zanetti, A. (2001). Fractionation of Nb and Ta from Zr and Hf at mantle depth; the role of titanian pargasite and kaersutite. Journal of Petrology 42, 221-232.
93. Tiepolo, M., Bottazzi, P., Palenzona, M. & Vannucci, R. (2003). A laser probe coupled with ICP-double-focusing sector-field mass spectrometer for in situ analysis of geological samples and U-Pb dating of zircon. Canadian Mineralogist 41, 259-272.
94. Tisserant, D., Thizat, R & Agard, J. (1976). Données géochronologiques sur le complexe de roches alcalines du Tamazeght (Haut-Atlas-de-Midelt, Maroc). Bullettin du BRGM, Section II 3 279-283.
95. Toramaru, A. & Fujii, N. (1986). Connectivity of melt phase in a partially molten peridotite. Journal of Geophysical Research 91 9239-9252.
96. Vaggelli, G., Olmi, F. & Conticelli, S. (1999). Quantitative electron microprobe analysis of reference silicate mineral and glass samples. Acta Vulcanologica 11, 297-303.
97. Vannucci, R., Piccardo, G. B., Rivalenti, G., Zanetti, A., Rampone, E., Ottolini, L., Oberti, R., Mazzucchelli, M. & Bottazzi, P. (1995). Origin of LREE-depleted amphiboles in the subcontinental mantle. Geochimica et Cosmochimica Acta 59, 1763-1771.
98. Vannucci, R., Bottazzi, P., Wulff-Pedersen, E. & Neumann, E. R. (1998). Partitioning of REE, Y, Sr, Zr and Ti between clinopyroxene and silicate melts in the mantle under La Palma (Canary Islands): Implications for the nature of the metasomatic agents. Earth and Planetary Science Letters 158, 39-51.
99. Vernières, J., Godard, M. & Bodinier, J. L. (1997). A plate model for the simulation of trace element fractionation during partial melting and magma transport in the Earth's upper mantle. Journal of Geophysical Research 102(B11), 24771-24784.
100. Wagner, C., Mokhtari, A., Deloule, E. & Chabaux, F. (2003). Carbonatite and alkaline magmatism in Taourirt (Morocco): Petrological, geochemical and Sr-Nd-isotope characteristics. Journal of Petrology 44, 937-965.
101. Wells, P. R. A. (1977). Pyroxene thermometry in simple and complex systems. Contributions to Mineralogy and Petrology 62, 129-139.
102. Witt-Eickschen, G. & Harte, B. (1994). Distribution of trace elements between amphibole and clinopyroxene from mantle peridotites of the Eifel (western Germany): An ion-microprobe study. Chemical Geology 117, 235-250.
103. Witt-Eickschen, G., Seck, H. A. & Reys, C. (1993). Multiple enrichment process and their relationship in the subcrustal lithosphere beneath the Eifel (Germany). Journal of Petrology 34, 1-22.
104. Witt-Eickschen, G., Seck, H. A., Mezger, K., Eggins, S. M. & Altherr, R. (2003). Lithospheric mantle evolution beneath the Eifel (Germany): constraints from Sr-Nd-Pb isotopes and trace element abundances in spinel peridotite and pyroxenite xenoliths. Journal of Petrology 44, 1077-1095.
105. Wulff-Pedersen, E., Neumann, E. R., Vannucci, R., Bottazzi, P. & Ottolini, L. (1999). Silicic melts produced by reaction between peridotite and infiltrating basaltic melts: Ion probe data on glasses and minerals in veined xenoliths from La Palma, Canary Islands. Contributions to Mineralogy and Petrology 137, 59-82.
106. Xu, Y., Mercier, J. C. C., Menzies, M. A., Ross, J. V., Harte, B., Lin, C. & Shi, L. (1996). K-rich glass-bearing wehrlite xenoliths from Yitong, Northeastern China: Petrological and chemical evidence for mantle metasomatism. Contributions to Mineralogy and Petrology 125, 406-420.
107. Xu, Y. G, Menzies, M. A., Bodinier, J. L., Bedini, R. M., Vroon, P. & Mercier, J. C. C. (1998). Melt percolation and reaction atop a plume: evidence from the poikiloblastic peridotite xenoliths from Borée (Massif Central, France). Contributions to Mineralogy and Petrology 132, 65-84.
108. Yang, H.-J., Frey, F. A., Weis, D., Giret, A., Pyle, D. & Michon, G. (1998). Petrogenesis of the flood basalts forming the northern Kerguelan archipelago: Implications for the Kerguelen plume. Journal of Petrology 39, 711-748.
109. Yaxley, G. M. & Kamenetsky, V. (1999). In situ origin for glass in mantle xenoliths from southeastern Australia: Insights from trace element compositions of glasses and metasomatic phases. Earth and Planetary Science Letters 172, 97-109.
110. Yaxley, G. M., Crawford, A. J. & Green, D. H. (1991). Evidence for carbonatite metasomatism in spinel peridotite xenoliths from western Victoria, Australia. Earth and Planetary Science Letters 107 305-317.
111. Yaxley, G. M., Kamenetsky, V., Green, D. H. & Falloon, T. J. (1997). Glasses in mantle xenoliths from Western Victoria, Australia, and their relevance to mantle processes. Earth and Planetary Science Letters 148, 433-446.
112. Yaxley, G. M., Green, D. H. & Kamenetsky, V. (1998). Carbonate metasomatism in the southeastern Australian lithosphere. Journal of Petrology 39, 1917-1931.
113. Zanetti, A., Mazzucchelli, M., Rivalenti, G. & Vannucci, R. (1999). The Finero phlogopite-peridotite massif: An example of subduction-related metasomatism. Contributions to Mineralogy and Petrology 134, 107-122.
114. Zanetti, A., Spadea, P., D'Antonio, M., Raffone, N., Vannucci, R. & Bruguier, N. J. (2006). Evidence for garnet- to spinel-facies, high-degree, fractional mantle melting in supra-subduction peridotites from South Chamorro, Conical and Torishima Seamounts in the Izu-Bonin-Mariana forearc. Ofioliti 33, 183-200.
115. Zangana, N. A., Downes, H., Thirlwall, M. F. & Hegner, E. (1997). Relationship between deformation, equilibration temperatures, REE and radiogenic isotopes in mantle xenoliths (Ray Pic, Massif Central, France): An example of plume-lithosphere interaction? Contributions to Mineralogy and Petrology 127, 187-203.
116. Zhu, W. & Hirth, G. (2003). A network model for permeability in partially molten rocks. Earth and Planetary Science Letters 212 407-416.
117. Zindler, A. & Hart, S. (1986). Chemical geodynamics. Annual Review of Earth and Planetary Sciences 14, 493-571.
118. Zinngrebe, E. & Foley, S. F. (1995). Metasomatism in mantle xenoliths from Gees, West Eifel, Germany: Evidence from genesis of calc-alkaline glasses and metasomatic Ca-enrichment. Contributions to Mineralogy and Petrology 122, 79-96.