Mantle Xenoliths from Tenerife (Canary Islands): Evidence for Reactions between Mantle Peridotites and Silicic Carbonatite Melts inducing Ca Metasomatism

Neumann, Else-Ragnhild; Wulff-Pedersen, E.; Pearson, Norman J.; Spencer, Elizabeth

doi:10.1093/petrology/43.5.825

Cited by 131 publications

(45 citation statements)

References 81 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…2a) are comparable to those of other Cenozoic ultramafic xenoliths entrapped in basalts from French Massif Central (Zangana et al, 1999;Lenoir et al, 2000), Germany (Hartmann and Wedepohl, 1990;WittEickschen, 1993), Hungary (Downes et al, 1992), Romania (Vaselli et al, 1995), Russia (Ionov et al, 1995), Mongolia (Wiechert et al, 1997), China (Qi et al, 1995;Chen et al, 2001) and Canadian Cordillera (Peslier et al, 2002). When compared to xenoliths from different geodynamic settings, such as oceanic or continental environments (Canary Islands: Wulff-Pedersen et al, 1996;Neumann et al, 2002;Kerguelen Islands: Grégoire et al, 1997;Australia: O'Reilly and Griffin, 1988;Yaxley et al, 1991;Foden et al, 2002) or typical subduction zones (Marianas: Parkinson and Pearce, 1998;Papua New Guinea: Franz et al, 2002;Philippines: Maury et al, 1992), the VVP and French Massif Central, Germany, Hungary, Romania, Russia, China, Mongolia and Canadian Cordillera xenoliths display lower cr# values, while showing the same range of mg#, that are comparable to the primordial mantle values (Fig. 2a).…”

Section: Major Element Compositionsupporting

confidence: 57%

“…Table 3a; VVP literature data: Beccaluva et al, 2001), compared to the primordial mantle composition (McDonough, 1990) and world-wide mafic xenoliths. French Massif Central: Zangana et al, 1999;Lenoir et al, 2000;Germany: Hartmann and Wedepohl, 1990;Witt-Eickschen, 1993;Hungary: Downes et al, 1992;Romania: Vaselli et al, 1995;Russia: Ionov et al, 1995;China: Qi et al, 1995;Chen et al, 2001;Mongolia: Wiechert et al, 1997;Canadian Cordillera: Peslier et al, 2002;Vulture: Downes et al, 2002;Canary Islands: Wulff-Pedersen et al, 1996;Neumann et al, 2002;Kerguelen Islands: Grégoire et al, 1997;Australia: O'Reilly and Griffin, 1988;Yaxley et al, 1991;Foden et al, 2002;Marianas: Parkinson and Pearce, 1998;Papua New Guinea: Franz et al, 2002;Philippines: Maury et al, 1992. The array (Ca-metasomatism) is from Yaxley et al, 1991.…”

Section: Trace Element Compositionmentioning

confidence: 99%

See 1 more Smart Citation

Ultramafic xenoliths from the Veneto Volcanic Province (Italy): Petrological and geochemical evidence for multiple metasomatism of the SE Alps mantle lithosphere

et al. 2006

View full text Add to dashboard Cite

Petrologic and geochemical characteristics of whole rocks and minerals may be explained by metasomatism of the local mantle lithosphere induced by both alkaline magmas upwelling to the surface (OIB-like mantle diapirism) and interaction with slab-derived material. In comparison with the geochemistry of xenoliths carried by alkaline magmas in typical withinplate tectonic environments, the Veneto xenoliths record a major heterogeneity of the local lithosphere. This appears to be related to a geodynamic scenario that was previously dominated by active continental collision, in which plume-like magmatism subsequently manifested itself.

show abstract

Section: Major Element Compositionsupporting

confidence: 57%

Section: Trace Element Compositionmentioning

confidence: 99%

Ultramafic xenoliths from the Veneto Volcanic Province (Italy): Petrological and geochemical evidence for multiple metasomatism of the SE Alps mantle lithosphere

et al. 2006

View full text Add to dashboard Cite

show abstract

“…A detailed understanding of the effects of mafic alkaline metasomatism is usually difficult to achieve because of the following problems: (i) primary metasomatic products and textural relationships may often be destroyed or/and superimposed with those resulting from interaction with the host magma during magma ascent or immediately before eruption (e.g. Klügel 1998), and (ii) compositional changes caused by carbonatitic melts/fluids usually occur roughly concomitantly with silicate metasomatism, producing an overlap in geochemical effects (Neumann et al 2002;Rivalenti et al 2004). In this context, the information provided by a careful study of textural relationships and mineral compositional variations within the presumed metasomatic associations is essential.…”

Section: Introductionmentioning

confidence: 99%

Mafic alkaline metasomatism in the lithosphere underneath East Serbia: evidence from the study of xenoliths and the host alkali basalts

Cvetković

Downes

Höck

et al. 2010

View full text Add to dashboard Cite

Effects of mafic alkaline metasomatism have been interpreted by study of East Serbian (SE Europe) mantle xenoliths and petrogenesis of their host alkaline rocks. Fertile xenoliths (addition of >10 %vol. of metasomatic clinopyroxene) and tiny assemblages found in depleted xenoliths are distinguished. The fertile lithology contains Ti-Al-Cr-rich clinopyroxene, Fe-rich olivine, Fe-Al-rich orthopyroxene and Al-rich spinel. The composition of this lithology is modeled by addition of 5-20 wt% of a basanitic-like melt to a refractory mantle. The small-scale assemblages occur as pocket-like, symplectitic or irregular deformation-assisted accumulations of metasomatic phases, generally composed of Ti-Al-and incompatible elements-rich Cr-diopside, Cr-Fe-Ti-rich spinel, altered glass, olivine, apatite, ilmenite, carbonate and feldspar, as well as relicts of a high-TiO2 (~11 wt%) phlogopite. Textural relationships imply the following reaction: opx + Cr-rich sp ±phlogopite + Si-poor alkaline melt = Ti-Al-cpx + Ti-rich sp ± ol ± other minor phases. The inversion modeling, performed on least contaminated and most isotopically uniform host basanites, implies a source which is enriched in highly and moderately incompatible elements (~35-40xchondrite for U-Th-Nb-Ta, 2xchondrite for heavy rare earth elements) suggesting that the primary magma of the host basanites was not derived by melting of a homogeneous asthenospheric source. D0 values of the calculated basanitic source are similar to D0 values of anhydrous metasomatized mantle with small additions of metasomatic clinopyroxene and carbonate (~5 %) and with traces of ilmenite (~1 %) and apatite (~0.05 %). A schematic two-phase model involves percolation of CO2-and H2O-rich fluids, precipitation of metasomatic hydrous minerals and their subsequent breakdown due to the further uplift of hot asthenospheric mantle. This model uses a general idea of linking intraplate alkaline magmatism to lithospheric mantle sources enriched by sub-lithospheric melts at some time in the past. Mantle metasomatism is generally believed to be responsible for small-scale heterogeneities within the lithosphere (Dawson 1984; Harte 1984Harte , 1987Menzies et al. 1987). Evidence from the study of mantle xenoliths entrained in alkali basalts proved to be particularly important for understanding the origin of such heterogeneities. Studies have shown that the major metasomatic agents are: (i) carbonatitic melts (Baker et al. 1998;Yaxley et al. 1998;Gorring & Kay 2000; Wang & Gasparik 2001), (ii) silicate melts (Menzies et al. 1987;Vannucci et al. 1998;Zangana et al. 1999;Gregoire et al. 2000;Kepezhinskas et al. 1995Kepezhinskas et al. , 1996Schiano et al. 2002) and (iii) fluids (O'Reilly & Griffin 1988;Baker et al. 1998;Gorring & Kay 2000;Larsen et al. 2003), the latter two having a wide range of compositions. All these agents produce different metasomatic styles recognized by changes in primary mantle mineralogy and specific enrichments in trace element composition. It is widely accepted that mafic al...

show abstract

“…The mineralogical and chemical enrichment in peridotite associated with metasomatic vein intrusion was studied in detail in outcrops of mantle rocks (Bodinier et al 2004;McPherson et al 1996;Woodland et al 1996;Zanetti et al 1996) and in mantle xenoliths (Dawson and Smith 1988;Irving 1980;Kempton 1987;Neumann et al 2002Neumann et al , 2004Nielson and Noller 1987;Wilshire et al 1980;WulffPedersen et al 1999). However, the mechanism of vein formation has received less attention and is the prime target of this experimental study.…”

Section: Introductionmentioning

confidence: 99%

Liquid line of descent of a basanitic liquid at 1.5 Gpa: constraints on the formation of metasomatic veins

Pilet

Ulmer

Villiger

2009

Contrib Mineral Petrol

View full text Add to dashboard Cite

Mantle Xenoliths from Tenerife (Canary Islands): Evidence for Reactions between Mantle Peridotites and Silicic Carbonatite Melts inducing Ca Metasomatism

Cited by 131 publications

References 81 publications

Ultramafic xenoliths from the Veneto Volcanic Province (Italy): Petrological and geochemical evidence for multiple metasomatism of the SE Alps mantle lithosphere

Ultramafic xenoliths from the Veneto Volcanic Province (Italy): Petrological and geochemical evidence for multiple metasomatism of the SE Alps mantle lithosphere

Mafic alkaline metasomatism in the lithosphere underneath East Serbia: evidence from the study of xenoliths and the host alkali basalts

Liquid line of descent of a basanitic liquid at 1.5 Gpa: constraints on the formation of metasomatic veins

Contact Info

Product

Resources

About