前半では、沈み込み帯・島弧由来の三波川帯・領家帯の変形・変成岩類やそれらの変成帯の境界をなしている大規模な断層である中央構造線を観察し、収束プレート境界における変成作用とテクトニクスについて学ぶ。後半では、浅間山周辺において噴火物を観察し、噴火プロセスを学ぶ。実施期間は9月18日(木)–23日(火)。
Firstly, we will observe deformed and metamorphosed rocks of the Sanbagawa and Ryoke terranes that represent parts of a former subduction zone and volcanic arc, respectively. We will also examine the major long-lived fault, the Median Tectonic Line, which separates the two terranes and learn about the links between tectonics and metamorphism in convergent plate margins. Secondly, we will observe volcanic material in and around Mt. Asama and study related processes of volcanic eruption. The field exercise will take place September 18-23.