Tertiary pegmatite dikes in the Codera and Bodengo areas of the Central Alps

TL;DRAbstract

The tertiary pegmatite field of the Central Alps extends for about 100 km in an E–W direction from the Bergell pluton (to the east) to the Ossola valley (to the west). It intrudes the steepened roots of the Alpine nappes (Souther Steep Belt) north of the Periadriatic Fault and gradually fades within 15 km toward north. The pegmatite field geographically overlaps (1) the highest temperature domain of the Lepontine Barrovian metamorphic dome and (2) the zone of Alpine migmatization. In this thesis is attempted a first multisciplinary study on these pegmatites over a limited surface of the whole extension of the pegmatite field. Pegmatites were studied in two different areas: (1) the Codera area, located on the western border of the Bergell Pluton, and (2) the Bodengo area, located between the Mera and the Mesolcina valleys. Results show that Codera and Bodengo pegmatites differ under many aspects including structural, geochemical and radiometric data. The main set of pegmatite dikes o

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