Structural analysis carried out on a segment of the Neoproterozoic Ribeira Belt, southeastern Brazil, show that it represents part of the transpressive dextral orogen related to the Central Mantiqueira Province. NNE-trending and steeply dipping regional mylonitic belts form anastomosed geometry, and describe a map-scale, S-C-like structure that is characterized by their deflection towards NE ne...

Core samples recovered from exploration boreholes and granite/greisen outcrops at the Panasqueira world-class tungsten deposit in central Portugal were subjected to chemical analyses petrographic studies. We present a geochemical dataset trace element compositions of quartz micas large part unexposed granitic pluton. Our data suggest that hidden granite body is more complicated than previously ...

Assessing the geochemical signature and role of fluids in a key Variscan detachment zone demonstrates link between crustal deformation, thermo-mechanical events mineralization. We document meteoric fluid infiltration into ductile segment Late-Carboniferous Quiberon (QDZ), when synkinematic muscovite tourmaline crystallized equilibrated with deuterium-depleted surface-derived during high-tempera...

the dehno granite massive is located in the east dehno village and southern khomein city and within themetamorphic sanandaj–sirjan zone. the composition of these rocks include: granodiorite, quartzdiorite(tonalite), monzogranite and leucogranite. quartz, alkali feldspar, plagioclase, biotite, andalusite, hornblendemuscovite, tourmaline, zircon and apatite are examples of the existing major and ...

Dehydration melting of metasupracrustal rocks at mid- to deep-crustal levels can generate water undersaturated granitic melt. In this study, we evaluate the potential ?1.89–1.88 Ga Precambrian southern Finland as source for 1.86–1.79 late-orogenic leucogranites in region, using Rhyolite-MELTS approach. Melt close composition leucogranite is produced over a range realistic pressures (5 8 kbar) a...