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The composition and behaviour of fluids in high-pressure rocks from the Alps: a review
No full textIn Lombardo B. Ed.: “Studies on metamorphic rocks and minerals of the Western Alps. A volume in memory of Ugo Pognante” Bollettino del Museo Regionale di Scienze Naturali, Torin
Foreword of the special issue on Giulio Elter Memorial Workshop - From Tethys to the Alps: Birth, Metamorphism and Deformation of the Piedmont-Ligurian Ophiolite Basin and Its Continental Margins
No full textGiulio Elter Memorial Workshop - From Tethys to the Alps: Birth, Metamorphism and Deformation of the Piedmont-Ligurian Ophiolite Basin and Its Continental Margins
No full textTwo-mica and tourmalina leucogranites from the Everest-Makalu region (Nepal-Tibet). Himalayan leucogranite genesis by isobaric heating?
No full textIn the Higher Himalaya of the region from Cho Oyu to the Arun valley northeast of Makalu, the Miocene leucogranites
are not hosted only in the upper High Himalayan Crystallines (HHC); a network of dykes also cuts the lower HHC and the
Lesser Himalayan Crystallines (LHC). The plutons and dykes are mainly composed of two-mica (muscovite+biotiteFtourmalineFcordieriteFandalusiteFsillimanite)
leucogranite, with tourmalineV2.6% and biotite >1.5% modal, and
tourmaline (muscovite+tourmalineFbiotiteFsillimanite FgarnetFkyaniteFandalusiteFspinelFcorundum) leucogranite, with
tourmaline >2.2% and biotite <1.5% modal. Both leucogranite types were produced by partial melting in the andalusite–
sillimanite facies series, under LP/HT conditions constrained by the occurrence of peritectic andalusite and cordierite. The
geochemical features of the leucogranites suggest that tourmaline leucogranite was produced by muscovite dehydration melting
in muscovite-rich metapelites at Pf350 MPa and Tz640jC, whereas two-mica leucogranite was produced by biotite
dehydration melting in biotite-rich metapelites at Pf300 MPa and Tz660–710 jC. Melting in fertile muscovite-rich
metapelites of the top of both the HHC and LHC produced magmas which were emplaced at the same structural level in which
they had been generated. Melting in the biotite-rich gneiss of both the HHC and LHC produced hotter magmas which were
transported upwards by dyking and eventually coalesced in the plutons of the upper HHC. A similar process also produced a
network of two-mica granite at the top of the LHC in the Ama Drime–Nyo ̈nno Ri Range northeast of Makalu. The prograde
character of leucogranite melt-producing reactions in the Everest–Makalu area suggests that, here, the generation of Miocene
leucogranites took place in a regime of nearly isobaric heating following nearly adiabatic decompression. D 2002 Elsevier
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Going Beyond Counting First Authors in Author Co-citation Analysis
Full text linkThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
Variations on the Author
Full text link“Variations on the Author” discusses two of Eduardo Coutinho’s recent films (Um Dia na Vida, from 2010, and Últimas Conversas, posthumously released in 2015) and their contribution to the general question of documentary authorship. The director’s filmography is characterized by a consistent yet self-effacing form of authorial self-inscription: Coutinho often features as an interviewer that rather than express opinions propels discourses; an interviewer that is good at listening. This mode of self-inscription characterizes him as an author who is not expressive but who is nonetheless markedly present on the screen. In Um Dia na Vida, however, Coutinho is completely absent form the image, while Últimas Conversas, on the contrary, includes a confessional prologue that moves the director from the margins to the center of his films. This article examines the ways in which these works stand out in the filmography of a director who offers new insights into the notion of cinematic authorship
P-T evolution and age of the Barrovian metamorphism in the MCT Zone of the Arun Valley, E Nepal
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