Transformation of Spinel Lherzolite to Garnet Lherzolite in Ultramafic Lenses of the Austridic Crystalline Complex, Northern Italy

Metamorphic evolution of garnet-spinel peridotites from the Variscan Schwarzwald (Germany)

“…The large spinel grains most likely represent former inclusions in garnet, implying that garnet grew at the expense of spinel during an earlier pressure increase and/or temperature decrease. This interpretation is in line with the rimward increase of X Cr in spl I (O'Neill 1981;Nickel 1986) and with the description of such garnet-forming reactions in peridotites from the Massif Central (Lasnier 1971) and the Austridic Crystalline Complex in northern Italy (Obata and Morten 1987).…”

Orogenic, Ophiolitic, and Abyssal Peridotites

“…Selective iron enrichment is commonly associated with textural, mineralogical, and/or trace element evidence for melt-rock interactions and is generally considered to trace the focused Plots of major-element oxides versus Al 2 O 3 (anhydrous wt%) in whole-rock orogenic, ophiolitic, and abyssal peridotites. Orogenic peridotites: Beni Bousera (Pearson et al, 1993, unpublished;Gueddari et al, 1996); Ronda Gueddari et al, 1996;Lenoir, 2000;Lenoir et al, 2001;Remaïdi, 1993;Van der Wal and Bodinier, 1996); Pyrenees (Bodinier, 1989;Bodinier et al, 1988Bodinier et al, , 1990Bodinier et al, , 2004Fabriès et al, 1989Fabriès et al, , 1998McPherson, 1994;McPherson et al, 1996); Lower Austria garnet peridotites (Becker, 1996); Ulten (Morten and Obata, 1990;Obata and Morten, 1987); Finero, Balmuccia, and Baldissero (Ernst, 1978;Hartmann and Wedepohl, 1993;Ottonello et al, 1984a;Rivalenti et al, 1995;Shervais and Mukasa, 1991;Sinigoi et al, 1983;Voshage et al, 1988); Lanzo (Ottonello et al, 1984a;Bodinier, 1988 (reproduced with permission of Elsevier from Tectonophysics, 1988, 149: 67-88), 1989); Voltri Group (Western Liguria); and External Ligurides (Beccaluva et al, 1984;Ernst and Piccardo, 1979;Ottonello et al, 1984b;Rampone et al, 1995); Horoman (Frey et al, 1991;Takazawa et al, 2000). Ophiolitic peridotites: Internal Ligurides (Beccaluva et al, 1984;Ottonello et al, 1984b;…”

“…The symbols are the same as in Figure 5. Orogenic peridotites: Ronda Garrido et al (2000); Lenoir, 2000;Lenoir et al, 2001;Remaïdi, 1993;Van der Wal and Bodinier, 1996); Pyrenees (Bodinier et al, , 1990Bodinier, 1989, unpublished;Fabriès et al, 1989Fabriès et al, , 1998McPherson, 1994;McPherson et al, 1996); Lower Austria garnet peridotites (Becker, 1996); Ulten (Morten and Obata, 1990;Obata and Morten, 1987); Alpe Arami (Ernst, 1978;Ottonello et al, 1984a); Finero, Balmuccia, and Baldissero (Ernst, 1978;Grieco et al, 2001;Hartmann and Wedepohl, 1993;Ottonello et al, 1984a;Rivalenti et al, 1995); Lanzo (Bodinier, 1988 (reproduced with permission of Elsevier from Tectonophysics, 1988, 149: 67-88), 1989); Voltri Group (Western Liguria) and External Ligurides (Ottonello et al, 1984b;Rampone et al, 1995;Scambelluri et al, 2001); and Horoman (Frey et al, 1991;Takazawa et al, 2000); Zabargad . Ophiolitic peridotites: Cuba (Proenza et al, 1999); Internal Ligurides (Ottonello et al, 1984b;Rampone et al, 1996Rampone et al, , 1998; Oman (Pallister and Knight, 1981;Lippard et al, 1986;Godard et al, 2000 (reproduced with permission of Elsevier from Earth and Planetary Science Letters, 2000, 180: 133-148); Gerbert-Gaillard, 2002; Godard, unpublished); Indonesia (Monnier, 1996); New Caledonia …”

Geochemical syntheses among the cratonic, off-cratonic and orogenic garnet peridotites and their tectonic implications

“…Alps and Sulu-Dabie mountains are the typical and important orogenic garnet peridotite distributing areas (Fig. 1) and have been studied in more detail (e.g., Obata and Morten 1987;Green et al 1997;Nimis and Morten 2000;Li 1994;Zhang et al 1994;Xu et al 2001Xu et al , 2002Yang et al 2007). The TRANSALP Working Group (2002) proposed a crocodile model of the lithospheric structure beneath Eastern Alps.…”