Alpenseminar by Verena Frey On the 18th of May we learnt about Tertiary magmatism along the prominent Periadriatic Lineament. During the previous seminars we discovered that the Periadriatic Lineament represents an important tectonic feature across the Alps and also plays an important role in controlling many surrounding geological processes, including stress release. Curiously, much Tertiary magmatism seen within the Alps appears to be aligned along the Periadriatic Lineament, as can be seen below: Overview of the Periadriatic Lineament and surrounding Tertiary intrusive bodies, after  von Blanckenburg and Davies, 1995 The Periadriatic Lineament formed in response to dextral movement along the European and Adriatic collisional zone and is often characterised by steeply-inclined mylonitic structures. Age dating of the Adamello pluton has helped constrain the age relationship of magmatism to being syn-collision: Overview of the range of age dating for the A...