 | 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...associated with leucocratic layers with quartz, jadeite and garnet. These features differentiate the BI...little acmite and virtually no AI'", and impure jadeite in the leucocratic layers and in the sodic whiteschist |  | | 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,...plagioclase (site P) was replaced by zoisite, jadeite, quartz, K-feldspar and kyanite, and coronitic...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., |  | Groppo, Chiara, Ferrando, Simona, Gilio, Manuele, Botta, Serena, Nosenzo, Francesco, Balestro, Gianni, Festa, Andrea, Rolfo, Franco (2019) What’s in the sandwich? New P–T 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 (modified from Compagnoni et al., 2012, and...location of the southern DMM (b) in north-west Italy and (c) within a simplified tectonic sketchmap of |  | Schenker, F. L., Schmalholz, S. M., Moulas, E., Pleuger, J., Baumgartner, L. P., Podladchikov, Y., Vrijmoed, J., Buchs, N., Müntener, 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) | | (Fig. 2b) between an eclogitic mafic boudin and a jadeite-absent metagranitic matrix (Adula/Cima Lunga nappe...between a whiteschist lens and weakly deformed jadeite-absent metagranite (Monte Rosa nappe, Pawlig &...coesite-bearing orthogneisses and schists of the Brossasco-Isasca unit (~4 GPa) tectonically inserted between the...mylonites 600 [°C] N S Upper units Brossasco–Isasca San Chiaffredo Pinerolo [GPa] (d) on diam...0 GPa/650°C DM: Dora–Maira unit BIU: Brossasco–Isasca unit ~4 GPa/730 °C GP: Gran Paradiso unit 2.6 GPa/600 |  | 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) | | Roberto Compagnoni á Takao Hirajima Marco Rubbo Jadeite with the Ca-Eskola molecule from an ultra-high...Brossasco±Isasca Unit (BIU) of the southern Dora Maira Massif, Western Alps, contains relicts of jadeite developed...plagioclase during the Alpine UHP metamorphism. The jadeite is characterised by a slight but signi®cant shortage...is 0.93. Careful algebraic calculations on the jadeite end members indicate that Ca and Al combine to...molecule ( £ 0.03). This is the ®rst report of jadeite with signi®cant amounts of CaEs component from |  | | 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...Dora-Maira massif, the Brossasco-Isasca Unit includes coesite-bearing phengite-jadeite-almandinequartz micaschist...micaschist, pyrope whiteschist, jadeite-kyanite quartzite, sodic whiteschist, and jadeitealmandine orthogneiss...felsic rocks with clear evidence of UHPM include jadeite quartzite, talc-kyanite quartzite, and other kyanite-bearing |  | | Journal (article/letter/editorial) | | ‘‘pyrope quartzite’’, various phengite-schist and jadeite-bearing rock intercalations, as well as for enclosing...overall kinship to the enclosing orthogneiss. Jadeite-bearing rocks, which occur as conformable layers...rocks of the coesite-bearing unit (or ‘‘Brossasco-Isasca Unit’’; Compagnoni et al., 1994) of the Dora-Maira...long-established name. The same is true for garnet–jadeite quartzite and jadeite quartzite (which the Commission suggests...suggests should be named quartz–jadeite–kyanite–garnet–/(coesite) rock). The term ‘‘whiteschist’’ is also |  | | 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 Brossasco– Isasca continental Unit (Chopin, 1984) and in the Lago...Ambin Massif; AR: Arolla Series; BI: Brossasco–Isasca UHP Unit; C: Combin Zone; ECM: External Crystalline...and marbles, and extraordinarily well-preserved jadeite-bearing metagranitoids (Compagnoni and Maffeo,...section, the GM rocks contain omphacite but not jadeite (Williams and Compagnoni, 1983), suggesting PT |  | | 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...ABrossasco-Isasca UnitB —APolymetamorphic complexB, Ž3a. Kyanite–almandine–phengite–jadeite paraschist;...Quartz-eclogite-facies basement unit, overlying the Brossasco-Isasca unit; Ž5. Quaternary cover; Ž6. Small marble intercalations; |  | Groppo, Chiara, Lombardo, Bruno, Castelli, Daniele, Compagnoni, Roberto (2007) Exhumation History of the UHPM Brossasco-Isasca Unit, Dora-Maira Massif, as Inferred from a Phengite-Amphibole Eclogite. International Geology Review, 49 (2) 142-168 doi:10.2747/0020-6814.49.2.142 | Journal (article/letter/editorial) | | (2007) Exhumation History of the UHPM Brossasco-Isasca Unit, Dora-Maira Massif, as Inferred from a Phengite-Amphibole...reserved. Exhumation History of the UHPM Brossasco-Isasca Unit, Dora-Maira Massif, as Inferred from a Phengite-Amphibole...Sciences, via Valperga Caluso 35, I-10125 Torino, Italy BRUNO LOMBARDO, C.N.R., Institute of Geosciences...c/o DSMP, via Valperga Caluso 35, I-10125 Torino, Italy Downloaded by [University of Leeds] at 18:04 18...Sciences, via Valperga Caluso 35, I-10125 Torino, Italy and C.N.R., Institute of Geosciences and Georesources—Torino |  | | Journal (article/letter/editorial) | | metagranite in the Brossasco–Isasca UHP Unit of Dora–Maira Massif, Italy ･･････････Tetsumaru ITAYA, Koshi...vein along the Kerajang Fault Zone in the Rengali Province of eastern India･･･････････Takafumi YAMAMOTO,...October 2017 JADEITE AND JADEITITE Gem sparkles deep: Preface of the special issue on ‘Jadeite and jadeitite’...Ritsuro MIYAWAKI ･････ 181 REVIEWS Jadeitite (jadeite jade) from Japan: History, characteristics, and...･･････････････････Hiroshi MIYAJIMA ･･････ 227 Jadeite and jadeitite–bearing rock in the Sanbagawa and |  | | Journal (article/letter/editorial) | | different localities of the coesite-bearing Brossasco-Isasca Unit and derived pressures of 27 to 29 kbar at...decreases slightly with Mg. Omphacite In general, the jadeite component of omphacites decreases from core to...rather low jadeite contents and occur in the cores of garnet, whereas those with the highest jadeite con tents...characterized by high pyrope contents. These latter high-jadeite com- DORA-MAIRA MASSIF 771 positions essentially...retrograde stage (III). Early, low-Si phengite and low-jadeite omphacite inclusions within garnet cores are corre |  | Groppo, Chiara, Ferrando, Simona, Castelli, Daniele, Elia, Diego, Meirano, Valeria, Facchinetti, Luca (2016) A possible new UHP unit in the Western Alps as revealed by ancient Roman quern-stones from Costigliole Saluzzo, Italy. European Journal of Mineralogy, 28 (6) 1215-1232 doi:10.1127/ejm/2016/0028-2531 | Journal (article/letter/editorial) | | ancient Roman quern-stones from Costigliole Saluzzo, Italy CHIARA GROPPO1,2, SIMONA FERRANDO1,*, DANIELE CASTELLI1...Sciences, Via Valperga Caluso 35, 10125 Torino, Italy *Corresponding author, e-mail: simona.ferrando@unito...10125 Torino, Italy 3 Department of Historical Studies, Via S. Ottavio 20, 10124 Torino, Italy Abstract:...of the Western Alps, i.e., either the Brossasco-Isasca Unit (BIU) of the southern Dora-Maira Massif or...Costigliole Saluzzo, Provincia di Cuneo in the Piemonte region, northern Italy (Fig. 1 and Fig. S1, freely |  | | Journal (article/letter/editorial) | | the central Gran Paradiso Massif (Western Alps, Italy): a microstructural and thermodynamic modelling...Petrologiche, Via Valperga Caluso 35, I-10125 Torino, Italy (igabudeanu@yahoo.com) 2 C.N.R. – Istituto di Geoscienze...Torino, Via Valperga Caluso 35, I-10125 Torino, Italy ABSTRACT A petrological and thermobarometric study...metasedimentary rocks, with scanty formation of jadeite, zoisite and a new high-pressure garnet (Grt 3)...calcschists with meta-ophiolites at the border between Italy and France; it extends from Val Grande di Lanzo |  | | Journal (article/letter/editorial) | | ultrahigh-pressure ŽUHP. metamorphic coesite-bearing Brossasco-Isasca Unit ŽBIU. of the Dora-Maira Massif. The mineral...Dora-Maira Massif, and especially its Brossasco-Isasca Unit ŽBIU, Compagnoni et al., 1995., became of...omphacites ŽFig. 3. are more complex. Generally, the jadeite component decreases from core to rim. Omphacite...contain a rather low jadeite component, whereas those with the highest jadeite contents are included...pyrope-component. Such omphacites with a high jadeite component essentially correspond chemically to |  | | 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 |  | | Journal (article/letter/editorial) | | early–middle Paleozoic tectonic evolution in Jilin Province, NE China･････････････････Zuozhen HAN, Zhigang...characteristics of the Xiajinbao gold deposit in the Hebei Province, China ････････････････････････････････････Hongbin...of carbon dioxide on the viscosity of a melt of jadeite composition at high pressure･･････････････････...meta–granites in the UHP Brossasco–Isasca Unit of Dora–Maira Massif, Italy ････････････････････････Tetsumaru |  | | Journal (article/letter/editorial) | | the mesoscopic scale. In a jadeite–kyanite–quartz rock, some of the jadeite crystals reveal (100) deformation...low-stress annealing, precludes that deformation of the jadeite and kyanite crystals is a result of a late-stage...lowtemperature overprint. The orientation distribution of jadeite and kyanite with and without twins or deformation... there is no preferred orientation of twinned jadeite and bent kyanite crystals and undeformed crystals...transient stresses causing mechanical twinning of jadeite and bending or kinking of kyanite. When the transformation |  | | 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) | | Volume 100, page 70−84, 2005 The coexistence of jadeite and omphacite in an eclogite-facies metaquartz...diorite from the southern Sesia Zone, Western Alps, Italy Keisaku MATSUMOTO and Takao HIRAJIMA Department...Sakyo−ku, Kyoto 606−8502, Japan An association of jadeite and omphacite has been newly found in an eclogite−facies...Complex of the Sesia Zone, Western Alps, Italy. Both the jadeite and omphacite occur as idiomorphic to subidiomorphic...other with a sharp grain boundary. Most of the jadeite shows faint and irregular zoning, with a chemical |  | | Journal (article/letter/editorial) | | Pavia, Italy Centro Grandi Strumenti, Università degli Studi di Pavia, I-27100 Pavia, Italy 3 Muséum...Jianchang eclogite pod, Su-Lu coesite-eclogite province, China. It has been approved as a new mineral...extraordinary chemically-zoned eclogite in which the jadeite (+ minor aegirine) proportion of the clinopyroxene...features such as the rst evidence of co-existing jadeite + quartz in Norway (Kechid and Smith, 1985; Smith...eclogite pod within the ``Norwegian coesite-eclogite province’’ (Smith, 1984) to which the Nybö eclogite pod |  | | Journal (article/letter/editorial) | | 15kbar) Mafic system: glaucophane – lawsonite – jadeite-quartz – pumpellyite Marble and calcschists: aragonite...glaucophane Evaporites (Maurienne Valley near Bramans): jadeite + quartz – anhydrite – selaite – sulfur Pelitic...aragonite – cookeite – paragonite Na rich metapelites: jadeite + quartz – glaucophane – chlorite – paragonite...- garnet or omphacite (+ jadeite)-sphene Granitic System: phengite – jadeite- epidote (Southern Vanoise...glaucophane – epidote (+ garnet) – omphacite (+ jadeite)-sphene Pelitic system: Mg rich chloritoid – phengite |  | Ferrando, Simona, Groppo, Chiara, Frezzotti, Maria Luce, Castelli, Daniele, Proyer, Alexander (2017) Dissolving dolomite in a stable UHP mineral assemblage: Evidence from Cal-Dol marbles of the Dora-Maira Massif (Italian Western Alps) American Mineralogist, 102 (1) 42-60 doi:10.2138/am-2017-5761 | Journal (article/letter/editorial) | | 35, I-10125 Torino, Italy 2 IGG-CNR, Via Valperga Caluso 35, I-10125 Torino, Italy 3 Department of Earth...Bicocca, Piazza della Scienza 4, I-20126 Milano, Italy 4 Department of Geology, University of Botswana...calcite-dolomite marbles from the well-known UHP Brossasco-Isasca Unit of the southern DoraMaira Massif (Italian...geological map of the coesite-bearing Brossasco-Isasca Unit [modified from Compagnoni et al. (2004) and...Variscan and Alpine P-T(-t) paths of the Brossasco-Isasca Unit inferred from previous studies (see for comparison |  | | Journal (article/letter/editorial) | | (UHP) metamorphic rocks from the Dora Maira Massif (Italy) and the Kokchetav Massif (Kazakhstan) were investigated...(2000). Coesite-bearing pyrope quartzites and jadeite quartzites from the Dora Maira Massif/Western Alps...1991) and are part of the coesite-bearing “Brosasco-Isasca Unit” (Compagnoni et al., 1994). Samples from Kazakhstan...bearthite, cha = chalcedony, cs = coesite, jd = jadeite, ky = kyanite, mnz = monazite, phe = phengite,...an inset under crossed polars. g) CL-image of jadeite with an irregular zonation; the dull luminescent |  | Tian, Ye, Xiao, Yilin, Chen, Yi-Xiang, Sun, He, Liu, Haiyang, Tong, Fengtai, Yang, Jie-Hua, Schertl, Hans-Peter (2019) Serpentinite-derived low δ7Li 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) | | Geological setting and samples RI PT The Brossasco-Isasca Unit (BIU) is a high pressure (HP) to ultrahigh...pyrope, quartz/coesite, kyanite, phengite, talc and jadeite, while in the retrogressed samples, pyrope has...R., 2007. Impure marbles from the UHP Brossasco-Isasca Unit (Dora-Maira Massif, western Alps): evidence...Superzoned garnets in the coesite-bearing Brossasco-Isasca Unit, Dora-Maira massif, Western Alps, and the...the ultra-high pressure Brossasco-Isasca unit (Western Alps, Italy). Journal of Maps 8, 465-472. SC |
|
