 | | Journal (article/letter/editorial) | | Ulten Zone (Italy) Antonio Langone a,⁎, 1, Roberto Braga b, 1, Hans-Joachim Massonne c, Massimo Tiepolo d...langone@igg.cnr.it (A. Langone). 1 Langone A. and Braga R. contributed equally to this work. 0024-4937/$...and Gondwana in Carboniferous times (Braga and Massonne, 2008; Braga et al., 2007). The garnet–kyanite paragneiss...pore spaces and at grain boundaries. According to Braga and Massonne (2008), the UZ lower crust experienced...position of rocks in a coherent crustal portion (see Braga and Massonne, in press), but perhaps also of incomplete |  | | Journal (article/letter/editorial) | | crust: the Ulten Zone, Italian Alps a Roberto Braga & Hans-Joachim Massonne b a Dipartimento di Scienze...online: 27 Jul 2011. To cite this article: Roberto Braga & Hans-Joachim Massonne (2012): H2O content of deep-seated...California, San Diego] at 09:13 21 May 2013 634 R. Braga and H.-J. Massonne needed to explain the calculated...in large kyanite from a garnet–kyanite gneiss (Braga et al. 2007). (2) A HP stage, loosely constrained...Hauzenberger et al. 1996; Braga et al. 2007) but probably close to 10 kbar (Braga and Massonne 2008), followed |  | Petri, B., Mohn, G., Štípská, P., Schulmann, K., Manatschal, G. (2016) The Sondalo gabbro contact aureole (Campo unit, Eastern Alps): implications for mid-crustal mafic magma emplacement. Contributions to Mineralogy and Petrology, 171 (5) doi:10.1007/s00410-016-1263-7 | Journal (article/letter/editorial) | | gabbro in the Campo unit (Tribuzio et al. 1999; Braga et al. 2001). This study constrains the P–T–d evolution...migmatites of the Upper Tonale unit (Ulten zone; Braga et al. 2007; Langone et al. 2011), Grt– St mica...Err and Bernina units (Halmes 1991; Büchi 1994; Braga et al. 2001), and inferred in the Margna unit (Guntli...(1964), Campa et al. (1997), Page 3 of 21 52 Braga et al. (2003), Mohn et al. (2011), 1:10,000 geological...based on parageneses and prismatine stability (Braga et al. 2001, 2003). Sm–Nd mineral-isochron dating |  | Vignola, Pietro, Zucali, Michele, Rotiroti, Nicola, Marotta, Gaia, Risplendente, Andrea, Pavese, Alessandro, Boscardin, Matteo, Mattioli, Vittorio, Bertoldi, Giorgio (2018) The Chrysoberyl- and Phosphate-Bearing Albite Pegmatite of Malga Garbella, Val Di Rabbi, Trento Province, Italy. The Canadian Mineralogist, 56 (4) 411-424 doi:10.3749/canmin.1700058 | Journal (article/letter/editorial) | | (Ab96–Ab100), also contains primary chrysoberyl, almandine, schorl, and muscovite as common accessory minerals...dikes consist of albite þ quartz pegmatite with almandine, schorl, and muscovite as common accessories....pegmatite commonly crop out (Godard et al. 1996, Braga & Bargossi 2014), similar to other Austroalpine...length (Bertoldi & Boscardin 1989). Muscovite, almandine garnet, and phosphates are almost uncom- Downloaded...size hosted both in plagioclase and in quartz. Almandine occurs as brown to pinkish crystals up to 3 cm |  | | Journal (article/letter/editorial) | | territory or Parautochtonous Thrust D Complex in Portugal) between these complexes and the autochthon (Ribeiro...significant variation in the contents of AC CE P almandine (Alm22–75), Sps13–58, Pyr1–8, and Gros13–28 components...and Gt2 show the same zonation with pyrope and almandine increasing and spessartine decreasing from core... NU Lòpez-Carmona et al. (2013) and Lo Pò and Braga (2014). Thus, the relevant Fe3+ or O2 content should...isopleths for the molar TE percentage of grossular, almandine, and pyrope of a selected garnet composition. |  | Consuma, Giulia, Braga, Roberto, Giovanardi, Tommaso, Bersani, Danilo, Konzett, Jürgen, Lugli, Federico, Mazzucchelli, Maurizio, Tropper, Peter (2020) In situ Sr isotope analysis of mantle carbonates: Constraints on the evolution and sources of metasomatic carbon-bearing fluids in a paleo-collisional setting. Lithos, 354. 105334 doi:10.1016/j.lithos.2019.105334 | Journal (article/letter/editorial) | | paleo-collisional setting Giulia Consuma, Roberto Braga, Tommaso Giovanardi, Danilo Bersani, Jürgen Konzett...2019 Please cite this article as: G. Consuma, R. Braga, T. Giovanardi, et al., In situ Sr isotope analysis...*Corresponding author: r.braga@unibo.it (Roberto Braga) ORCID id 0000-0001-8210-6658 ro of Department...eclogite-facies conditions -p (Nimis and Morten, 2000; Braga and Sapienza, 2007), associated with widespread...of garnet-peridotites (Obata and Morten, 1987; Braga and Sapienza 2007; Marocchi et al., 2007). All UZ |  | Ridolfi, Filippo, Braga, Roberto, Cesare, Bernardo, Renzulli, Alberto, Perugini, Diego, Del Moro, Stefano (2016) Unravelling the complex interaction between mantle and crustal magmas encoded in the lavas of San Vincenzo (Tuscany, Italy) Part I: Petrography and Thermobarometry. Lithos, 244. 218-232 doi:10.1016/j.lithos.2015.09.029 | Journal (article/letter/editorial) | | and Thermobarometry Filippo Ridolfi a,⁎, Roberto Braga b, Bernardo Cesare c, Alberto Renzulli a, Diego...Cordierite has a Mg# of 51–78%, while garnet shows almandine compositions with low CaO (≤2 wt.%) and variable...150 200 250 300 350 Distance (µm) high-P Almandine Grt of ACQ rhyolites 10 Grt in the lavas of Lipari...Fe–Mg diffusion). (b) CaO vs. MnO diagram of almandine garnets from the ACQ rhyolites, Lipari lavas (Barker...consisting of Bt, Pl and Qz (e.g. Fig. 4d). It shows almandine compositions (Alm70–82) with grossular contents |  | | Report (chapter) | | unit with the M1 zones of chlorite, biotite, almandine garnet and staurolite from a footwall unit strongly...to progressive destabilization of kyanite and almandine garnet, and only mineral relics of M1 have been...Samples of SE1 foliation from the biotite and almandine garnet zones of the upper unit in Somosierra have...(leucogranite, 11) Navahermosa (gabbronorite, 19) Braga (granodiorite, 11) Alburquerque (monzogranite, 11)...(granite, 8) Braga (granite, 8) Cabeza de Araya (cordierite-biotite granodiorite, 11) Braga (quartz monzodiorite |  | Lo Pò, D., Braga, R., Massonne, H.-J., Molli, G., Montanini, A., Theye, T. (2016) Fluid-induced breakdown of monazite in medium-grade metasedimentary rocks of the Pontremoli basement (Northern Apennines, Italy) Journal of Metamorphic Geology, 34 (1) 63-84 doi:10.1111/jmg.12171 | Journal (article/letter/editorial) | | Pontremoli basement (Northern Apennines, Italy) 1 R. BRAGA,1 H.-J. MASSONNE,2 G. MOLLI,3 A. MONTANINI4 AND...increase of 13 and 7 mol.%, respectively, in almandine (Alm) and pyrope (Prp) and a decrease of © 2015...(a) Compositional profile showing contents of almandine, spessartine, pyrope and grossular components... 2001; Peressini et al., 2007) to mid-crustal (Braga et al., 2001; Monjoie et al., 2005) and shallow...Apennines (Monti Pisani and Punta Bianca; Lo P o & Braga, 2014; Lo P o et al., 2015 and references therein) |  | | Journal (article/letter/editorial) | | solution models for garnet (pyrope–grossular–almandine–skiagite; Malaspina et al., 2009b), olivine (...of grossular (Gr), and variable skiagite (Ski)–almandine (Alm) content as a function of the redoxsensitive...estimates are consistent with those proposed by Braga & Sapienza (2007) and suggest that the fluid phase...peridotites. The pressure-temperature estimates of Braga & Sapienza (2007) of T 730 C at P 1.6 GPa...consistent with the thermobarometric estimated by Braga & Sapienza (2007) for garnet-free, carbonate-bearing |  | | Journal (article/letter/editorial) | | recently suggested by Tumiati et al. (2003). R. BRAGA ET AL. FIG. 1. (a) Main palaeogeographic units...15Grs0.04Sps0.02. Interestingly, the 693 R. BRAGA ET AL. FIG. 3. (a) Photomicrograph of a large porphyroblastic...porphyroblastic garnet show similar contents of almandine and pyrope. The anhedral garnet displays the same...biotite, obtained using EMPA (see Table 1). 697 R. BRAGA ET AL. solutions (labelled in the newest_format_solut...refers to the P-T window used in Fig. 6a. 699 R. BRAGA ET AL. pressure (~15ºC and 0.5 kbar). However, |  | Lo Pò, Deborah, Braga, Roberto, Massonne, Hans-Joachim, Molli, Giancarlo, Montanini, Alessandra, Bargossi, Giuseppe M. (2018) High-Ptectono-metamorphic evolution of mylonites from the Variscan basement of the Northern Apennines, Italy. Journal of Metamorphic Geology, 36 (1) 23-39 doi:10.1111/jmg.12281 | Journal (article/letter/editorial) | | Gianelli, Pandeli, & Puxeddu, 2004; Lo Pò & Braga, 2014; Lo Pò, Braga, & Massonne, 2016a; Lo Pò et al., 2016b;...Meccheri, 1993; Franceschelli et al., 2004; Lo Pò & Braga, 2014; Lo Pò et al., 2016a, 2016b) consists of low-...preparation and the instrumental set-up were reported by Braga and Cinelli (2014). Loss on ignition (L.O.I.) was...oligoclase-andesine (Ab64-80An20-36). Garnet is almandine-rich showing an increase of Fe and a decrease...amphibolite-facies reequilibration at 333 ± 7 Ma (Giacomini, Braga, Tiepolo, & Tribuzio, 2007; Fig. 9). Although eclogitic |  | Novák, Milan, Filip, Jan, Gadas, Petr, Galiová, Michaela Vašinová, Přikryl, Jan, Novák, Milan, Filip, Jan, Gadas, Petr, Galiová, Michaela Vašinová (2014) Iron+magnesium-bearing beryl from granitic pegmatites: an EMPA, LA-ICP-MS, Mössbauer spectroscopy, and powder XRD study. The Canadian Mineralogist, 52 (2) 271-284 doi:10.3749/canmin.52.2.271 | Journal (article/letter/editorial) | | g., Aurisicchio et al. 1988, Viana et al. 2002, Braga et al. 2002, da Costa et al. 2006, Turner & Groat...(Kα) lines: sanidine (Si, Al, K), albite (Na), almandine (Fe), pyrope (Mg), titanite (Ca, Ti), rhodonite...tetrahedra or the CH site, but in a very minor quantity (Braga et al. 2002). 280 the canadian mineralogist ...minerals (e.g., allanite, hematite, magnetite, almandine-spessartine, ilmenite, pyrite, danalite). Concentrations...Mineralogische und Petrographische Mitteilungen 76, 357–382. Braga, G.C.B., Garg, V.K., De Oliveira, A.C., Freitas |  | | Journal (article/letter/editorial) | | Giovanna T. Sapienza Æ Marco Scambelluri Æ Roberto Braga Received: 7 July 2008 / Accepted: 29 January 2009...available to authorized users. G. T. Sapienza R. Braga (&) Dipartimento di Scienze della Terra e Geologico-Ambientali...600–850°C (Godard et al. 1996; Tumiati et al. 2003; Braga et al. 2007a). Sm–Nd dating of peridotites, country...Scambelluri et al. 2006; Marocchi et al. 2007; Braga and Sapienza 2007): here we briefly recall the features...Garnet compositions are pyrope-rich (pyrope 63–68, almandine 19–23, grossular 11– 14), with negligible spessartine |  | Ferrero, S., Braga, R., Berkesi, M., Cesare, B., Laridhi Ouazaa, N. (2014) Production of metaluminous melt during fluid-present anatexis: an example from the Maghrebian basement, La Galite Archipelago, central Mediterranean. Journal of Metamorphic Geology, 32 (2) 209-225 doi:10.1111/jmg.12068 | Journal (article/letter/editorial) | | Archipelago, central Mediterranean S. FERRERO,1 R. BRAGA,2 M. BERKESI,3 B. CESARE4 AND N. LARIDHI OUAZAA5...tonalites and Alm71 Pyr22 Sps3 Grs3 in garnetites. Almandine and pyrope components have similar trends, respectively...Zone lower crust metapelites of the Eastern Alps (Braga & Massonne, 2008, 2012) and the metapelitic enclaves...Mineralogical Association of Canada, Vancouver. Braga, R. & Massonne, H.J., 2008. Mineralogy of inclusions...Italian Alps. Periodico di Mineralogia, 77, 43–64. Braga, R. & Massonne, H.J., 2012. H2O content of deep-seated |  | Ranjbar, S., Tabatabaei Manesh, S. M., Mackizadeh, M. A., Tabatabaei, S. H., Parfenova, O. V. (2016) Geochemistry of major and rare earth elements in garnet of the Kal-e Kafi skarn, Anarak Area, Central Iran: Constraints on processes in a hydrothermal system. Geochemistry International, 54 (5) 423-438 doi:10.1134/s0016702916050098 | Journal (article/letter/editorial) | | Grossular 60 Pyrope 50 Spessartine 40 Uvarovite Almandine 30 20 10 0 58 59 60 61 62 63 64 65 66 67 68 69...3.03 3.03 3 3 3 3 3 3 3 3 3 3 3 Almandine 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00...Cr Fe [R 3+]VI Fe [R 3+(VI) 2+ 2+]VIII Almandine 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00...elements during weathering of granitic rocks, Evora, Portugal,” Chem. Geol. 107, 293–296 (1993). C. S. Haase... 14, 285–304 (1974). M. I. Prudencio, M. S. A. Braga, and M. A. Gouveia, “REE mobilization, fractionation |  | Cruciani, G., Franceschelli, M., Massonne, H.-J., Musumeci, G., Spano, M. E. (2016) Thermomechanical evolution of the high-grade core in the nappe zone of Variscan Sardinia, Italy: the role of shear deformation and granite emplacement. Journal of Metamorphic Geology, 34 (4) 321-342 doi:10.1111/jmg.12183 | Journal (article/letter/editorial) | | (samples G49 & G53) is zoned (Figs 6a & S2a). Almandine increases from a minimum of 52–53 mol.% in the...characterized by fairly constant spessartine and almandine contents 330 G. CR UCIANI ET AL. Table 1. Selected...significant increase in spesssartine and decrease in almandine in the rim (to 23–24 mol.% and ~66 mol.% respectively)...composition of Fe–Mg-bearing silicates (e.g. Lo P o & Braga, 2014; Massonne, 2014). Calculations in PERPLE_X...& Ricci, C.A., 1982. Ca distribution between almandine-rich garnet and plagioclase in pelitic and psammitic |  | | Journal (article/letter/editorial) | | Gneiss sample P71239 is grossular–pyrope-rich almandine and has weak zoning profiles (Fig. 10) with Alm50Prp20Grs29Sps1...sample P71211 is unzoned grossular–pyrope-rich almandine (Fig. 10) with Alm51–53 Prp19–20Grs24–25Sps3–4...Pluton sample P73873 is pyroperich grossular–almandine with Alm41–43Prp21–23Grs33–36 Sps2, whereas garnet...domain is more variable pyrope–grossular-rich almandine with Alm42–46Prp28–33Grs19–29 Sps1. Garnet in...reaction zone sample P71158 is pyrope–grossular-rich almandine with Alm45–47Prp33–35Grs19–20Sps1. Clinopyroxene |  | | Journal (article/letter/editorial) | | K-feldspar, albite, tourmaline and oriented almandine-spessartine crystals containing rarely a grossular...orthoclase, albite, microcline, muscovite spessartine-almandine, beryl, Y-gadolinite, ixiolite, Ta-aeschynite...metamorphic and metasomatic rocks from northern Portugal. – N. Jb. Miner. Abh. 184: 45 –76. NOVÁK, M. &...Centre, University of Coimbra, 3000-272 Coimbra, Portugal. E-mail: neiva@dct.uc.pt CARLOS A. A. LEAL GOMES...Centre, University of Minho, Gualtar, 4710-057 Braga, Portugal. |  | | Journal (article/letter/editorial) | | (Ligurian Alps, Italy) Folco Giacomini Æ Roberto Braga Æ Massimo Tiepolo Æ Riccardo Tribuzio Received:...Laterina 8, Siena, Italy e-mail: giacomini@unisi.it R. Braga Dipartimento di Scienze della Terra e Geologico-Ambientali...digestion of crustal rocks by the basic magma (Braga and Tribuzio 1999). The contact between this enclave...amphibolite-facies metamorphic re-equilibration (Braga and Tribuzio 1999). Eclogites High-pressure paragenetic...diopside-andesine symplectites. Garnet porphyroblasts are almandine-rich (49–62%) with lower amounts of grossular |  | | Journal (article/letter/editorial) | | high-pressure (HP) to UHP units by Willner et al. (2000), Braga et al. (2007) and Štípská et al. (2008) have demonstrated...jadeite; Holland and Powell, 1996), garnet (Gt(HP) — almandine, grossular, pyrope, and spessartine; Holland and...form small quantities of the garnet components almandine and pyrope (see, in particular, Fig. 1c and e)...extrapolation. Contrib. Mineral. Petrol. 89, 168–183. Braga, R., Massonne, H.-J., Morten, L., 2007. An early |  | | Book | | and Malka Hershkovitz 105 Christian Gems from Portugal in Context Graça Cravinho and Shua Amorai-Stark...de Lisboa Av. de Berna, 26-C P 1069-061 Lisboa Portugal graca.silvaster@gmail.com Professor Dr Véronique...Cravinho and S. Amorai-Stark: Christian Gems from Portugal in Context Pl.1 – © Luis Fraga da Silva; Pl. 2...universal comparada, III, Lisbon, 1985, 113; Pl. 5 – © Braga, Museu D. Diogo de Sousa; Pls 6,28 – © Lisbon, Museu...paleo-cristã da época das Invasões’, História da Arte em Portugal, II, Lisbon 1986, 14 and 10; Pl. 16 – after V |  | | Journal (article/letter/editorial) | | Garnet is an Alm-Grs-Prp solid solution with the almandine component ranging between 49 and 60 mol.% and...mol.% in the inclusionfree mantle, balanced by almandine increasing from 49 to 55 mol.%. Pyrope and spessartine...a low grossular content (Grs13)15) and a high almandine (Alm58)60) and spessartine content (Sps4), which...Pl2 (for a description of the method, see also Braga et al., 2005), in the realistic hypothesis that... Fig. 5. Garnet compositions plotted in the (almandine + spessartine)-grossular-pyrope diagram. Garnet |  | | Journal (article/letter/editorial) | | wt% BaO. Garnet in sample 65163 is pyrope-rich almandine and has bell-shaped growth-zoning spessartine...Alm78Prp15Grs4Sps3. Garnet in sample 73879 is pyrope-rich almandine and has flat zoning profiles across a large core...granulite facies metamorphism (Barboza et al., 1999; Braga et al., 2001; Dufek & Bergantz, 2005). At the same...Journal of Geology and Geophysics, 34, 261–270. Braga, R., Giacomini, F., Messiga, B. & Tribuzio, R., |  | Coelho, Mariana Barroso, Trouw, Rudolph Allard Johannes, Ganade, Carlos E., Vinagre, Rodrigo, Mendes, Júlio Cezar, Sato, Kei (2017) Constraining timing and P-T conditions of continental collision and late overprinting in the Southern Brasília Orogen (SE-Brazil): U-Pb zircon ages and geothermobarometry of the Andrelândia Nappe System. Precambrian Research, 292. 194-215 doi:10.1016/j.precamres.2017.02.001 | Journal (article/letter/editorial) | | section). The garnet in these samples is mainly almandine (Xalm 56-59%) with grossular (Xgross 2227%), pyrope...spessartine (Xspess <0.09 %). A slight enrichment in almandine towards the rims is compensated by diminishing... 1989). Garnet from sample MAR-55 is rich in almandine (Xalm = 63-77%) with minor grossular (Xgross =...assemblage Mg-hornblende + diopside + plagioclase + almandine, typical of the amphibolite facies. The schists...spanned from ca. 680 to 625 Ma (Ebert et al., 1996; Braga, 2002; Hackspacher et al., 2003; Campos Neto et |
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Nogueiró e Tenões, Braga, Braga, Portugal