 | KIENAST, J. R., LOMBARDO, B., BIINO, C., PINARDON, J. L. (1991) Petrology of very-high-pressure eclogitic rocks from the Brossasco-Isasca Complex, Dora-Maira Massif, Italian Western Alps. Journal of Metamorphic Geology, 9 (1) 19-34 doi:10.1111/j.1525-1314.1991.tb00502.x | Journal (article/letter/editorial) | | Terra, Via Valperga Caluso 37, 1-70725 Torino, Italy Mineralogisch-Petrographisches Institut, Universitat...the Penninic Dora-Maira Massif between Brossasco, Isasca and Martiniana (Italian Western Alps) and for a...pyrope-coesite whiteschists of Martiniana. The Brossasco-Isasca (BI) eclogites are fine grained, foliated and often...Geologico. Relevant sheets of the Geological Map of Italy at the 1:100,OOO scale are Dronero-Argentera, Pinerolo...internal side of the Western Alpine arc close to the Piedmont plain W and SW of Torino (Fig. 1). It is an elongated |  | | Journal (article/letter/editorial) | | Torino, Italy CNR, Istituto di Geoscienze e Georisorse, Via Valperga Caluso 35, 10125 Torino, Italy a r...Subsequently, the recognition of coesite in the Brossascoā Isasca continental Unit (Chopin, 1984) and in the Lago...Ambin Massif; AR: Arolla Series; BI: BrossascoāIsasca UHP Unit; C: Combin Zone; ECM: External Crystalline...different Alpine metamorphic overprint. The BrossascoāIsasca Unit, which underwent UHP metamorphism at P N 4...discoveries, such as the coesite ļ¬ndings in the BrossascoāIsasca Unit of the DoraāMaira Massif (Chopin, 1984) and |  | Solarino, Stefano, MalusĆ , Marco G., Eva, Elena, Guillot, StĆ©phane, Paul, Anne, Schwartz, StĆ©phane, Zhao, Liang, Aubert, Coralie, Dumont, Thierry, Pondrelli, Silvia, Salimbeni, Simone, Wang, Qingchen, Xu, Xiaobing, Zheng, Tianyu, Zhu, Rixiang (2018) Mantle wedge exhumation beneath the Dora-Maira (U)HP dome unravelled by local earthquake tomography (Western Alps) Lithos, 296. 623-636 doi:10.1016/j.lithos.2017.11.035 | Journal (article/letter/editorial) | | Nazionale di Geofisica e Vulcanologia, CNT, Genova, Italy 2 Department of Earth and Environmental Sciences...Sciences, University of Milano-Bicocca, Milano, Italy 3 Univ. Grenoble Alpes, Univ. Savoie Mont-Blanc, CNRS...Nazionale di Geofisica e Vulcanologia, Bologna, Italy SC RI PT 1 NU Authors for correspondence :...function analysis along the CIFALPS transect (China-Italy-France Alps seismic survey; Zhao et al., CE 2015)...mainly consists of rocks PT derived from the Piedmont ocean-continent transition and from the adjoining |  | ITAYA, Tetsumaru, YAGI, Koshi, GOUZU, Chitaro, NGO XUAN THANH, , GROPPO, Chiara (2017) Preliminary report on the excess argon bearing Kāfeldspar from metagranite in the BrossascoāIsasca UHP Unit of DoraāMaira Massif, Italy. Journal of Mineralogical and Petrological Sciences, 112 (1) 36-39 doi:10.2465/jmps.160718a | Journal (article/letter/editorial) | | metagranite in the BrossascoāIsasca UHP Unit of DoraāMaira Massif, Italy Tetsumaru ITAYA*,**, Koshi YAGI**...of Torino, via Valperga Caluso 35, 10125 Torino, Italy ** The metagranite, that still preserves the igneous...Ma. This age, signiļ¬cantly older than the SHRIMP zircon UāPb age (35.4 Ā± 1.0 Ma) previously estimated for...for the metamorphic peak of the BrossascoāIsasca UHP unit, is apparent due to inherited excess argon...Keywords: Western Alps, DoraāMaira Massif, BrossascoāIsasca UHP unit, Permian metagranite, Kāfeldspar KāAr |  | Schenker, F. L., Schmalholz, S. M., Moulas, E., Pleuger, J., Baumgartner, L. P., Podladchikov, Y., Vrijmoed, J., Buchs, N., MĆ¼ntener, O. (2015) Current challenges for explaining (ultra)high-pressure tectonism in the Pennine domain of the Central and Western Alps. Journal of Metamorphic Geology, 33 (8) 869-886 doi:10.1111/jmg.12143 | Journal (article/letter/editorial) | | coesite-bearing orthogneisses and schists of the Brossasco-Isasca unit (~4 GPa) tectonically inserted between the...mylonites 600 [Ā°C] N S Upper units BrossascoāIsasca San Chiaffredo Pinerolo [GPa] (d) on diam...0 GPa/650Ā°C DM: DoraāMaira unit BIU: BrossascoāIsasca unit ~4 GPa/730 Ā°C GP: Gran Paradiso unit 2.6 GPa/600...3). The UHP rocks are limited to the Brossasco-Isasca subunit (~15 wide 9 2 km thick, Fig. 1d) in the...2012). Peak metamorphic pressure in the Brossasco-Isasca micaschists is derived from phengite + garnet |  | | Journal (article/letter/editorial) | | Superzoned garnets in the coesite-bearing Brossasco-Isasca Unit, Dora-Maira massif, Western Alps, and the...of Torino, 35 Via Valperga Caluso, 10125 Torino, Italy b Department of Geology and Mineralogy, Graduate...Geologic map of the central coesite-bearing Brossasco-Isasca unit and adjoining units, southern Dora-Maira massif...Chiaffredo unitB; Ž3. Coesiteāeclogite-facies ABrossasco-Isasca UnitB āAPolymetamorphic complexB, Ž3a. Kyanite...Quartz-eclogite-facies basement unit, overlying the Brossasco-Isasca unit; Ž5. Quaternary cover; Ž6. Small marble intercalations; |  | | Journal (article/letter/editorial) | | Petrologiche, Via Valperga Caluso 35, I-10125, Torino, Italy Version of record first published: 06 Jul 2010....Petrologiche, Via Valperga Caluso 35, I-10125 Torino, Italy Downloaded by [Fondren Library, Rice University...relics. In the Dora-Maira massif, the Brossasco-Isasca Unit includes coesite-bearing phengite-jadeite-almandinequartz...accessory rutile, titanite, apatite, tourmaline, and zircon. Exceptionally, rare or unique phases also may...less signifiĀ cant, minerals, such as garnet or zircon. ConseĀ quently, the study of UHPM in felsic rocks |  | | Journal (article/letter/editorial) | | reactions in a metagranodiorite from the Brossasco-Isasca Unit, Dora-Maira Massif, western Italian Alps:...Torino, Italy (rubbo@dsmp.unito.it) ABSTRACT Metagranodiorite samples from the Brossasco-Isasca Unit,...Massif (Gil Ibarguchi et al., 1991), the Brossasco-Isasca Unit (BIU) of the southern DoraMaira Massif (DMM)...Compagnoni, 1992), and the Su-Lu orogen, Shandong Province, China (Hirajima et al., 1993; Wallis et al.,...Southern Alps. Black box, location of the Brossasco-Isasca Unit. (b) Geological sketch map of the central |  | Tian, Ye, Xiao, Yilin, Chen, Yi-Xiang, Sun, He, Liu, Haiyang, Tong, Fengtai, Yang, Jie-Hua, Schertl, Hans-Peter (2019) Serpentinite-derived low Ī“7Li fluids in continental subduction zones: Constraints from the fluid metasomatic rocks (whiteschist) from the Dora-Maira Massif, Western Alps. Lithos, 348. 105177 doi:10.1016/j.lithos.2019.105177 | Journal (article/letter/editorial) | | whiteschists, e.g., their relatively low ļ¤18O values, zircon O isotopic 4 ACCEPTED MANUSCRIPT compositions...and the much lower ļ¤18O values of the metamorphic zircon domains compared to those of the relict ED magmatic...Geological setting and samples RI PT The Brossasco-Isasca Unit (BIU) is a high pressure (HP) to ultrahigh...values of metamorphic zircon domains compared to those of MA relict magmatic zircon domains in the whiteschist...also not possible to explain the whole-rock and zircon O isotopic compositions, as ED well as the extremely |  | Bruno, Marco, Compagnoni, Roberto, Hirajima, Takao, Rubbo, Marco (2002) Jadeite with the Ca-Eskola molecule from an ultra-high pressure metagranodiorite, Dora-Maira Massif, Western Alps. Contributions to Mineralogy and Petrology, 142 (5) 515-519 doi:10.1007/s004100100307 | Journal (article/letter/editorial) | | metagranodiorite from the ultra-high pressure (UHP) BrossascoĀ±Isasca Unit (BIU) of the southern Dora Maira Massif, Western...of Turin, Via Valperga Caluso 35, 10125 Torino, Italy E-mail: compagn@dsmp.unito.it Tel.: +39-011-6707104...collected from the ultra-high pressure (UHP) BrossascoĀ± Isasca Unit (BIU) of the southern Dora-Maira Massif, Western...1994) and the Ā®nding of only coesite inclusions in zircon (Sobolev et al. 1994) suggest that the pressure...jadeites were performed at the University of Turin, Italy, with a scanning electron microscope (Cambridge |  | | Journal (article/letter/editorial) | | metaāgranites in the UHP BrossascoāIsasca Unit of DoraāMaira Massif, Italy Tetsumaru ITAYA*,**, Hironobu HYODO***...Torino, 10125 Torino, Italy ā” IGGāCNR, Via Valperga Caluso 35, Iā10125 Torino, Italy ** Two undeformed...collected from the UHP BrossascoāIsasca Unit (BIU) of DoraāMaira Massif, Italy to carry out the laser stepāheating...Keywords: Western Alps, DoraāMaira Massif, BrossascoāIsasca UHP unit, Permian metagranite, Biotite 40Ar/ 39...sketch map of the UHP BrossascoāIsasca Unit (southern DoraāMaira Massif, Italy), modiļ¬ed from Compagnoni et |  | Groppo, Chiara, Ferrando, Simona, Gilio, Manuele, Botta, Serena, Nosenzo, Francesco, Balestro, Gianni, Festa, Andrea, Rolfo, Franco (2019) Whatās in the sandwich? New PāT constraints for the (U)HP nappe stack of southern Dora-Maira Massif (Western Alps) European Journal of Mineralogy, 31 (4) 665-683 doi:10.1127/ejm/2019/0031-2860 | Journal (article/letter/editorial) | | of Torino, Via Valperga Caluso 35, 10125 Torino, Italy *Corresponding author, e-mail: chiara.groppo@unito...Valperga Caluso 35, 10125 Torino, Italy Abstract: The Brossasco-Isasca Unit (BIU) of the southern Dora-Maira...g., Manzotti et al., 2015, 2018). The Brossasco-Isasca Unit (BIU) of the southern DoraMaira Massif (DMM)...southern Dora-Maira Massif around the UHP Brossasco-Isasca Unit (modiļ¬ed from Compagnoni et al., 2012, and...location of the southern DMM (b) in north-west Italy and (c) within a simpliļ¬ed tectonic sketchmap of |  | | Journal (article/letter/editorial) | | Torino, Via Valperga Caluso 35, I-10125 Torino, Italy (simona.ferrando@unito.it) 2 Department of Earth...University of Siena, Via Laterina 8, I-53100 Siena, Italy 3 Department of Earth Sciences, University of Perugia...Perugia, Italy ABSTRACT The ultrahigh-pressure pyrope whiteschists from the Brossasco-Isasca Unit of... the postVariscan metagranite of the Brossasco-Isasca Unit experienced a prograde metamorphism at HP...INTRODUCTION Pyrope whiteschists from the Brossasco-Isasca Unit (BIU) of the Southern Dora-Maira Massif (Western |  | | Journal (article/letter/editorial) | | rocks of the coesite-bearing unit (or āāBrossasco-Isasca Unitāā; Compagnoni et al., 1994) of the Dora-Maira...quartz-eclogite-facies metamorphism; Brossasco-Isasca Unit: (c) polymetamorphic complex, (d) monometamorphic...ep/aln, ap, zrn, mnz, rt, and as inclusions within zircon: tlc and ky l. Phengite gneiss (17473; Fig. 2,...zo, jd, ky, tur, ap, zrn, rt 4. San Chiaffredo/Isasca Orthogneiss (19165) qtz, ab, Kfs, bt, phe/ms, chl...about 300 m above the chapel of San Chiaffredo at Isasca (locality 4 in Fig. 1). Another spectacular outcrop |  | | Journal (article/letter/editorial) | | is that of a jadeitic clinopyroxene inclusion in zircon from the country-rock orthogneiss near Parigi (M...phengite, all present as inclusions within the same zircon crystal, yields a range of 730 to 830Ā°C and 35...typical assemblage clinochloreākyanite-talc-rutile-zircon Ā± phlogopite Ā± ellenbergerite as prograde inclusions...different localities of the coesite-bearing Brossasco-Isasca Unit and derived pressures of 27 to 29 kbar at...al., 1994, 1995) of the UHP unit (or Brossasco-Isasca unit). Admittedly, the process of metamorphism |  | | Journal (article/letter/editorial) | | classical geochronological methods, such as UāPb on zircon (conventional multigrain data and/or in situ SHRIMP...rocks from the Dora-Maira Massif, Western Alps, Italy (Chopin, 1984), numerous new UHP terranes have been...different UHP schists of the Lago di Cignana area, Italy (Gouzu et al., 2006). The intention of the present...al., 1991), which they re-named the āBrossasco-Isasca Unitā (BIU), into a āmonometamorphic complexā with...polymetamorphic complex (BIU) Pyrope quartzite Isasca D A a B b c d e A marble Pyrope quartzite |  | | Journal (article/letter/editorial) | | 00716.x Impure marbles from the UHP Brossasco-Isasca Unit (Dora-Maira Massif, western Alps): evidence...Petrologiche, Via Valperga Caluso 35, I-10125 Torino, Italy (daniele.castelli@unito.it) 2 Istituto di Geoscienze...Torino, Via Valperga Caluso 35, I-10125 Torino, Italy ABSTRACT Two impure ultrahigh-pressure (UHP) marbles...from the polymetamorphic complex of the Brossasco-Isasca Unit (BIU) (southern Dora-Maira Massif) have been...1997; Ogasawara et al., 1998). In the UHP Brossasco-Isasca Unit (in the following referred to as BIU) of southern |  | DI VINCENZO, GIANFRANCO, TONARINI, SONIA, LOMBARDO, BRUNO, CASTELLI, DANIELE, OTTOLINI, LUISA (2006) Comparison of 40Arā39Ar and RbāSr Data on Phengites from the UHP BrossascoāIsasca Unit (Dora Maira Massif, Italy): Implications for Dating White Mica. Journal of Petrology, 47 (7) 1439-1465 doi:10.1093/petrology/egl018 | Journal (article/letter/editorial) | | Phengites from the UHP BrossascoāIsasca Unit (Dora Maira Massif, Italy): Implications for Dating White...E GEORISORSEāCNR, VIA MORUZZI 1, I-56124 PISA, ITALY 2 ISTITUTO DI GEOSCIENZE E GEORISORSEāCNR, SEZIONE...TORINO, VIA VALPERGA CALUSO 35, I-10125 TORINO, ITALY 3 DIPARTIMENTO DI SCIENZE MINERALOGICHE E PETROLOGICHE...PETROLOGICHE, VIA VALPERGA CALUSO 35, I-10125 TORINO, ITALY 4 ISTITUTO DI GEOSCIENZE E GEORISORSEāCNR, SEZIONE...SEZIONE DI PAVIA, VIA FERRATA 1, I-27100 PAVIA, ITALY RECEIVED JULY 31, 2005; ACCEPTED MARCH 7, 2006; ADVANCE |  | | Journal (article/letter/editorial) | | metamorphism in the Dora Maira Massif (western AIp$, Italy), using an ultra-violet laser ablation microprobe...Brossasco metagranite belongs to the Brossasco-Isasca complex (Biino et al. 1988, and Fig. 1), a little...granite of poorly known age, though a U/Pb age on zircon suggests an age of 303 Ma (Paquette, personal communication...Simplified map of southern Dora Maira with Brossasco-Isasca HP unit (from Henry et al. 1993, modified). The...augen gneisses with coesitepyrope bearing lenses, 3 Isasca series (gneiss, metapelite marbles and metabasite) |  | | Journal (article/letter/editorial) | | metagranite in the BrossascoāIsasca UHP Unit of DoraāMaira Massif, Italy ļ½„ļ½„ļ½„ļ½„ļ½„ļ½„ļ½„ļ½„ļ½„ļ½„Tetsumaru ITAYA, Koshi...vein along the Kerajang Fault Zone in the Rengali Province of eastern Indiaļ½„ļ½„ļ½„ļ½„ļ½„ļ½„ļ½„ļ½„ļ½„ļ½„ļ½„Takafumi YAMAMOTO,...MIYAHARA ļ½„ļ½„ļ½„ļ½„ļ½„ļ½„ 247 ORIGINAL ARTICLES Ināsitu UāPb zircon age dating deciphering the formation event of the |  | Sousa, J., Kohn, M. J., Schmitz, M. D., Northrup, C. J., Spear, F. S. (2013) Strontium isotope zoning in garnet: implications for metamorphic matrix equilibration, geochronology and phase equilibrium modelling. Journal of Metamorphic Geology, 31 (4) 437-452 doi:10.1111/jmg.12028 | Journal (article/letter/editorial) | | Ma), southern Chile (c. 75 Ma) and northwestern Italy (c. 35 Ma). Both normal Sr isotope zoning (increasing...profound disparities between mica and feldspar, zircon reactivity might influence the Lu-Hf system by...explain these isotopic patterns. In the Brassasco-Isasca unit of the Dora Maira Massif, where whiteschist...matrix. In contrast, virtually all Hf is hosted in zircon (Scherer et al., 2000), which is widely viewed...dissolve zircon, rather than via complete bomb dissolution of all minerals, including zircon (e.g. Scherer |  | Chen, Yi-Xiang, Schertl, Hans-Peter, Zheng, Yong-Fei, Huang, Fang, Zhou, Kun, Gong, Ying-Zeng (2016) MgāO isotopes trace the origin of Mg-rich fluids in the deeply subducted continental crust of Western Alps. Earth and Planetary Science Letters, 456. 157-167 doi:10.1016/j.epsl.2016.09.010 | Journal (article/letter/editorial) | | integrated study of whole-rock Mg and O isotopes, zircon UāPb ages and O isotopes for the whiteschist and...integrated study of wholerock Mg and O isotopes, and zircon UāPb ages and O isotopes for whiteschist and its...lithosphere-derived units of the Piemonte Zone. The BrossascoāIsasca Unit (BIU) in the southern part of Dora-Maira experienced...central portion of the coesite-bearing āBrossascoāIsasca Unitā (BIU) and relationships with other adjacent...for zircon CL images and mineral inclusions, whole-rock major elements and O isotopes, and zircon O isotopes |  | | Journal (article/letter/editorial) | | Milano-Bicocca, Piazza della Scienza 4, 20126 Milano, Italy Dipartimento di Scienze Geologiche, UniversitĆ di...di Roma Tre, Largo San Murialdo 1, Roma, Italy Les Planes, 11400 Issel, France a r t i c l e i n f...were discovered in the Dora-Maira unit (Brossasco-Isasca slice; Chopin et al., 1991) and on top of the Zermatt-Saas...beneath sedimentary successions of the Tertiary Piedmont Basin and Western Po Plain (Fig. 1). Lower-pressure... Ar BarrĆŖme Basin te n ge 44Ā° N Tertiary Piedmont Basin Cretaceous wedge; (a) Periadriatic intrusives |  | | Journal (article/letter/editorial) | | Compagnoni Exhumation History of the UHPM Brossasco-Isasca Unit, Dora-Maira Massif, as Inferred from a Phengite-Amphibole...S. Singh, and A. K. Jain Continuous Metamorphic Zircon Growth and Interpretation of U-Pb SHRIMP Dating:...Neoproterozoic Yanbian Group, Southern Sichuan Province, Southwest China . . . . . . . . . . . . . . ...UHP Zoisite-Quartz Fels, Dora Maira, Northwest Italy: An EBSD Case Study . . . . . . . . . . . . . ....Yan Liu, Ziqing Yang, and Meng Wang History of Zircon Growth in a High-Pressure Granulite within the |  | | Report (issue) | | Zhang, M. McWilliams, and J.G. Liou 6. SHRIMP U-Pb zircon dating of the Rongcheng eclogite and associated...metapelite from the ultrahigh-pressure Brossasco-Isasca unit (Dora-Maira Massif, Western Alps): New petrological...International Geological Congress in Florence, Italy. Constructive reviews were provided by W.G. Ernst...high-resolution ion microprobe (SHRIMP) dating of zircon from the ultrahigh-pressure Sulu terrane, eastern...to Late Triassic (ca. 230ā200 Ma) is recorded in zircon mantles and rims; cathodoluminescence imaging, |
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