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Showing 1 to 14 of 14 for “"Petrologia"”.
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Petrologia do macico mafico-ultramafico passo do ivo, sao gabriel, Rio Grande do Sul
o Maciço Máfico-ultramáfico Passo do Ivo, localizado ao sul de São Gabriel (RS), é um corpo de forma alongada,encaixado nos metamorfitos do Grupo Vacacaí e o conjunto está encravado tectonicamente, em litologias graníticas. Foram distinguidas zonas de concentração preferencial de minerais dentro do …
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Innovative numerical petrological methods for definition of metamorphic timescale events of southern European Variscan relicts via thermodynamic and diffusion modelling of zoned garnets
… a due casi studio dei metodi innovativi di petrologia numerica, utilizzando diversi linguaggi informatici di programmazione (Model Builder; Python; Matlab), con l intento di studiare le proprietà chimico-fisiche delle rocce metamorfiche alla microscala. Tali metodi si sono rivelati utili …
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Metamorfismo ercinico di bassa-pressione: evoluzione tettonico-metamorfica del complesso di mandatoriccio (massiccio della Sila - Calabria)
Low-pressure/high-temperature (LP/HT) metamorphic belts are characterised by rocks that experienced abnormal heat flow in shallow crustal levels (T > 600 °C; P < 4 kbar) resulting in anomalous geothermal gradients (60-150 °C/km). The abnormal amount of heat has been related to crustal underplating …
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EVOLUTION OF THE EASTERN ALPS FROM THE PALEOZOIC ONWARD: CONSTRAINTS AND INSIGHTS FROM THE (ULTRA)BASIC ECLOGITIC COMPLEX OF MILCHENKAR ÖTZTAL-STUBAI COMPLEX (EASTERN ALPS, TYROL, AUSTRIA)
The Ötztal-Stubai Complex (OSC) is one of the widest tectonic units of the Alps, belonging to the Eastern Austroalpine domain and extending between the Engadine and Tauern windows, the Northern Calcareous Alps and the Vinschgau/Venosta valley. Together with other polycyclic crystalline basements …
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Geologia, petrografia e geoquímica das rochas plutônicas precambrianas (unidade metadiorítica Ibitutinga e unidade metatrondhjemítica Caburu) intrusivas nas rochas do greenstone Belt Barbacena, São João del Rei, Minas Gerais
In the southeastern portion of the São Francisco Craton, located between São João Del Rey and Ritápolis cities (Minas Gerai, State) an area of nearly 180 km² of rocks of the Barbacena Greenstone Belt (metaultramafic and amphibolitic rocks, and schists) and associated mafic to felsic plutonic …
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Caratterizzazione geo-petrografica, petrologica e geochimica di rocce anatettiche del nord Sardegna
The High Grade Metamorphic Complex (HGMC) of Variscan basement of north Sardinia is characterized by the widespread of migmatites. This study is focused on two localities of NE Sardinia (Porto Ottiolu and Punta Sirenella) where ortho- and para-derivates migmatites outcrop. A geological and …
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Metamorfismo varisico dell’Unità tettonica del Monte Grighini,Sardegna centrale
Monte Grighini Complex (central Sardinia) consists, from the bottom to the the top of Monte Grighini Unit, Castello Medusa Unit and Gerrei Unit. Monte Grighini Unit is caracterized by medium grade metamorphism evidenced by mineral such garnet, staurolite, andalusite and sillimanite, and by the …