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Article
Tertiary age and paleostructural inferences of the eclogitic imprint in the Austroalpine outliers and Zermatt–Saas ophiolite, western Alps
The Austroalpine Sesia–Lanzo inlier and upper Austroalpine Dent Blanche, Mt. Mary and Pillonet outliers occur on top of the western-Alpine orogenic wedge and, as a whole, override the structurally composite op...
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Article
Petrogenesis of calc-alkaline, shoshonitic and associated ultrapotassic Oligocene volcanic rocks from the Northwestern Alps, Italy
Along the Western Alps there is geological evidence of late-Alpine (Oligocene) magmatic activity which clearly postdates the Lepontine (Eocene-early Oligocene) metamorphism and related deformation of the Alpin...
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Article
Rb-Sr and K-Ar ages on minerals at temperatures of 300°–400° C from deep wells in the Larderello geothermal field (Italy)
Rb-Sr and K-Ar ages have been obtained on six biotites, two muscovites and one hornblende from samples of micaschist, gneiss and amphibolite of Lower Paleozoic to Precambrian age at a depth exceeding 2,000 m i...
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Article
Correlation between strontium and oxygen isotopic compositions of rocks from the Adamello massif (Northern Italy)
Rock samples from the lithologic units forming the Adamello massif were analyzed for Rb and Sr concentrations and for87Sr/86Sr and18O/16O ratios. The most important features are as follows:
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Article
On the age of the Vedrette di Ries (Rieserferner) massif and its geodynamic significance
Für eine radiometrische Gesamtgesteinsanalyse von etwa vierzig Proben des Rieserferner-Massivs, hat man sich der Rb/Sr Methode bedient.