 | | Journal (article/letter/editorial) | | high-XMg-phengite and quartz/coesite inclusions within zircon of the ‘pyrope quartzite’ (Schertl & Schreyer,...gneiss include the localities Tapina and Masueria in Vallone di Gilba. For comparative reasons also a so-called...bearthite. In addition, two metagranite samples from Brossasco were analyzed. Most of the studied mineral separates...separate from a fine-grained ‘pyrope quartzite’ from Masueria was examined (sample 17641). A bulkrock analysis...Quarry 1 km NW Parigi; ˜ Tapina; ¯ Masueria; ca. 500 m E Brossasco. to the ‘pyrope quartzite’. Additionally |  | | Journal (article/letter/editorial) | | classical geochronological methods, such as U–Pb 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...(Chopin et al., 1991), which they re-named the “Brossasco-Isasca Unit” (BIU), into a “monometamorphic complex”...Pyrope quartzite II-VII Phengite schists Tapina C Masueria 3 marble polymetamorphic complex (BIU) Pyrope |  | | Journal (article/letter/editorial) | | metamorphic rocks of the coesite-bearing unit (or ‘‘Brossasco-Isasca Unit’’; Compagnoni et al., 1994) of the...by Alpine quartz-eclogite-facies metamorphism; Brossasco-Isasca Unit: (c) polymetamorphic complex, (d)...homogranular to porphyritic metagranite (e.g. Brossasco granite), to coarse augengneiss, and to fine-grained...ep/aln, ap, zrn, mnz, rt, and as inclusions within zircon: tlc and ky l. Phengite gneiss (17473; Fig. 2,...grt, ep/aln, tur, rt, ttn, zrn (as in 1.m.) 6. Masueria a. Fine-grained ‘‘pyrope quartzites’’ (17636, |  | 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) | | whiteschists, e.g., their relatively low 18O values, zircon O isotopic 4 ACCEPTED MANUSCRIPT compositions...and the much lower 18O values of the metamorphic zircon domains compared to those of the relict ED magmatic...2. 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 |  | | Journal (article/letter/editorial) | | rocks from the Dora Maira Massif, Western Alps, Italy-ll: what is the age of the ultrahigh-pressure metamorphism...materials for the sources of all of the samples. Five zircon samples, 4 from pyrope megacrysts and 1 from fine-grained...concordia diagram. Zircon from the country rock also plots along the chord. The zircon data, together with...reflecting lower blocking temperatures than that of zircon. S i n - N d data from a pyrope megacryst give...corresponding to an age of 38 Ma, in agreement with the zircon date. A major question concerns the timing of the |  | | Book (edition) | | Republic). W.D. Birch (Australia), Elena Bonaccorsi (Italy), Ernst A.J. Burke (Netherlands), L.J. Cabri (Canada)...M. Dcliens (Belgium). Giancarlo Delia Ventura (Italy), T.S. Ercit (Canada). Alexander Falster (USA)....(Canada). L.A. Groat (Canada). Alessandro Guastoni (Italy), William A. Henderson. Jr. (USA). D.D. Hogarth...(ltaly). Igor Pekov (Russia), atale Perchiazzi (Italy). Ole V. Petersen (Denmark). Fedcrico Pezzotta (ltaly)...Provvidenzakaolinquarry,Allumierc,Tolfa Mount district,Roma Province,Lazio,ltaly,NJMM 1976,40~17 (str.),AC 18, 249-252 |
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