Geology of the Saint-Marcel valley metaophiolites (Northwestern Alps, Italy)

The geological map of the Saint-Marcel valley at the scale of 1:20,000 illustrates the tectonic setting of metaophiolites from the southern Aosta Valley, in the Italian side of the Western Alpine belt. The map highlights the sharp contact between the metaophiolitic basement and its metasedimentary cover, which mainly consists of quartzites, marbles, and calcschists. In spite of the Alpine tectonics, this contact is regarded as deriving from the original oceanic crust/sediments interface. Metaophiolites mostly consist of metabasalts hosting Fe\u2013Cu sulphide mineralisations, characterised by high-pressure metamorphic imprint. These rocks likely represent the shallowest portion of the Tethyan oceanic lithosphere created near the axis of the slow-spreading ridge where hydrothermal fluid circulation was active. Selected key-sections through metasediments reveal a consistent internal lithostratigraphy, in spite of the pervasive metamorphic and tectonic reworking acting during the Alpine evolution. Metasediments reflect various sedimentation episodes starting from pelagic and proximal settings to the onset of the orogenic stage. The Saint-Marcel valley metasediments thus reflect a changing in the sedimentation environments through time and space during the overall geologic evolutio

Height Systems and Vertical Datums: a Review in the Australian Context

This paper reviews (without equations) the various definitions of height systems and vertical geodetic datum surfaces, together with their practical realisation for users in Australia. Excluding geopotential numbers, a height system is a one-dimensional coordinate system used to express the metric distance (height) of a point from some reference surface. Its definition varies according to the reference surface chosen and the path along which the height is measured. A vertical geodetic datum is the practical realisation of a height system and its reference surface for users, nominally tied to mean sea level. In Australia, the normal-orthometric height system is used, which is embedded in the Australian Height Datum (AHD). The AHD was realised by the adjustment of ~195,000 km of spirit-levelling observations fixed to limited-term observations of mean sea level at multiple tide-gauges. The paper ends by giving some explanation of the problems with the AHD and of the differences between the AHD and the national geoid model, pointing out that it is preferable to recompute the AHD

Il vino pi\uf9 alto d'Europa": l'influenza della geologia e del clima nella coltura della vite in Valle d'Aosta

\uabThe highest wine of Europe\ubb: influence of geology and climate on grape growing in the Aosta valley. Climate, quaternary dynamics, vine cultivars and wine production contribute to define three different physiographic zones in the Aosta Valley. The Zone A (fig. 2), a NW-SE trending valley at the foot of the Mt. Bianco, is characteried by cold humid climate, with relatively short summer (fig. 3). fluvial and gravitational dynamics. The \uabBlanc de Morgex et de La Salle\ubb wine from \uabPri\ue9 Blanc\ubb grapes as well as the \uabEnfer d\u2019Arvier\ubb from \uabPetiti Rouge\ubb grapes are here produced. Pri\ue9 Blanc vines are cultivated on the better exposed (SW) alluvial and detrital fans where soil is characterized by cm-sized skeleton of schists and carbonate debris (figs. 4a, 4b e 5a). Petit Rouge vines are cultivated on a big landslide of late glacial age. The soil is characterized by chaotic m- to decameter-sized blocks with sandy matrix (figs. 4c and 5b). The Zone B is characterized by dry climate, Pleistocenic glacial and gravitative deposits. The Torrette and Chambave wines from \uabPetit Rouge\ubb grapes, and the \uabNus\ubb from \uabVien de Nus\ubb grapes are obtained. Vines are cultivated on Pleistocenic tillites (figs. 4d and 5c). The Zone C is characterized by temperate humid climate, eluvial and gravitative dynamics. The \uabArnad-Monjovet\ubb and \uabDonnas\ubb wines are here produced from Nebbiolo grapes. The vines are cultivated on steep terraced slope with eluvial deposits, thin humus-rich soil wich skeleton is characterized by cm-sized macaschists

L'interruzione volontaria della gravidanza. Compiti, problemi e responsabilit\ue0.

La monografia affronta la complessa problematica giuridica, deontologica ed etica della interruzione volontaria della gravidanza soffermandosi sui compiti e sulle responsabilit\ue0 che incombono sui professionsti sanitari coinvolti in tali richieste di intervento

Problematiche medico-legali di fronte al bambino sieropositivo per HIV.

Gli Autori affrontono le problematiche medico-legali scaturenti dall'assistenza dei bambini sieropositivi per HI

Thermobarometry of phengite-bearing eclogites in the Glacier-Rafray Austroalpine unit, Italian Western Alps. Looking for the geothermal gradient of a fossil accretionary prism.

2nonenoneBENCIOLINI L; TARTAROTTI PBenciolini, Luca; Tartarotti, P