Awaji Island, September 25-28, 2018



Field Trip

On September 29, 2018, we are planning a field excursion. This excursion offers opportunities to observe topographical and geological features accompanied by fault activities along the Median Tectonic Line (MTL), the most prominent and long-lived active fault system in Japan, traced back to Cretaceous times. The MTL bounds the Ryoke high-temperature metamorphic belt overlain by sediments of the Late Cretaceous Izumi Super-group and the Sanbagawa high-pressure metamorphic belt. In the morning, we will observe geomorphological manifestation of the EW-trending MTL fault system at the middle reaches of the Yoshinogawa river. In the afternoon, we shall visit an outcrop of the Sibou thrust fault, a bifurcation of the MTL fault system. A lunch break will be offered at Oboke gorge, the heartland of the Sanbagawa metamorphic belt.

Excursion course:
08:30 Leaving the hotel for Stop 1
10:10 Stop 1: Fault scarp at Ikeda (MTL geomorphology)
10:50 Leaving Stop 1 for Oboke
11:20 Lunch at Oboke Roadside Station
12:30 Leaving Oboke for Stop 2
13:20 Stop 2: Sibou thrust fault (MTL bifurcating fault)
14:00 Leaving Stop 2 for the airport
15:20 Arriving at the Tokushima airport
17:00 Arriving at the Sannomiya station

Stop 1: Ikeda fault, a branch of the MTL fault system. Ikeda, Miyoshi city, Tokushima prefecture (N34°01’44”, E133°48’04”)

Stop 2: Shibou thrust, a bifurcation of the MTL fault system. Mino, Miyoshi city, Tokushima prefecture (N34°03’07”, E133°57’51”)

Lunch Stop: Oboke Roadside Station

Note: The maximum number of participants is 30 (first come, first served policy)



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