 | | Journal (article/letter/editorial) | | Compositions of Eclogites and Associated Rocks From the Eastern Sesia Zone (Western Alps, Italy) Jacqueline...Oxygen and hydrogen isotope analyses have been made of mineral separates from eclogites, glaucophanites...Regularities in (1) hydrogen isotope compositions, (2) order of 180 enrichment among coexisting minerals, and (3)...attainment of a high degree of isotopic equilibrium. However, some scattering of 5180 values of individual...eclogitic assemblage did not form in the presence of a thoroughly pervasive fluid. Minerals from an eclogitic |  | | Journal (article/letter/editorial) | | Eur. J. Mineral. 2002, 14, 61–71 Behavior of zircon during high-pressure, low-temperature metamorphism:...metamorphism: Case study from the Internal Unit of the Sesia Zone (Western Italian Alps) HANNS -PETER LIERMANN1...and ROLAND OBERHÄNSLI2 1 Department of Geosciences, University of Arizona, Gould-Simpson Building (# 77)...the Sesia Zone, Western Alps were examined by means of scanning electron, back-scattered and cathodoluminescence...U-Pb systematics of zircon in high-pressure, low-temperature terranes. The results of the U-Pb geochronology |  | | Journal (article/letter/editorial) | | pyroxenes: Structuralmechanisms of solid solutionand cationorderingin augite-jadeite perspectiYe I. A macroscopic...via Ferrata 1,27100 Pavia, Italy '?Department of Earth Sciences,University of Cambridge,Downing Street...la Cristallochimica, via Ferrata 1, 27100 Pavia, Italy Ansrucr Single-crystal and powder X-ray diffraction...and cation-orderingbehavior in the system augite-jadeite(low acmite content). We examined 28 natural pyroxenes...degrees of order. Annealing experiments were carried out to obtain crystals with different degrees of order |  | | Journal (article/letter/editorial) | | phengites from the internal part of the Sesia Zone, Western Alps, Italy B. St6ckhert 1, E. Jiiger 2, and...Zfilpicher Strage 49, D-5000 K61n 1, Federal Republic of Germany a Abteilung fiir Isotopengeologie, Universit/it...phengite populations from a small area of the internal part of the Sesia Zone, lower Aosta valley. There...early Alpine subduction, in the stability field of jadeite+quartz (P>_15_1 kbar at T = 550_+ 50 ~ C). Coarse-grained...still elevated temperatures in the stability field of albite, yield identical ages close to 80 Ma. In the |  | Ruffet, Gilles, Féraud, Gilbert, Balèvre, Michel, Kiénast, Jean-Robert (1995) Plateau ages and excess argon in phengites: an 40Ar39Ar laser probe study of Alpine micas (Sesia Zone, Western Alps, northern Italy) Chemical Geology, 121 (1) 327-343 doi:10.1016/0009-2541(94)00132-r | Journal (article/letter/editorial) | | 4°Ar-39Ar laser probe study of Alpine micas (Sesia Zone, Western Alps, northern Italy) Gilles Ruffet a, Gilbert...November 1994 Abstract Bulk samples and single grains of high-pressure white micas and a biotite from two...Marine) 10 km apart in the Sesia Zone (Western Alps, Italy) were analysed by the conventional (step-heating)...Ma, respectively. In the light of the present knowledge of the history of the Alps, ages as old as 180...in defects within the structure of the phengite grains at the time of their isotopic closure, is the best |  | | Journal (article/letter/editorial) | | metamorphism during eclogitization of amphibolites in the Sesia–Lanzo Zone of the Western Alps 1938-2839 Geology...CNR-IDPA, Milano, Italy; bDipartimento di Scienze della Terra, Università di Pavia, Pavia, Italy (Accepted 3...3 December 2009) Interactions of fabric evolution and chemical parameters driving reaction progress during...transition were investigated in eclogitized amphibolites of the Western Alps. In the Sesia–Lanzo Zone (SLZ),...and are characterized by different modal amounts of amphibole, omphacite, zoisite, garnet, and phengite |
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Settimo Vittone, Metropolitan City of Turin, Piedmont, Italy