ORCID iD https://orcid.org/0000-0003-1222-2578
Research Institute of Earthquake and Volcano Geology（web）
Geodynamics Research Group, Group Leader
E-mail: otsubo-m*aist.go.jp (Please replace * to @)
Fault gouge Cups
During a break in the field survey, I made a sake cup from fault gouge. I would like to enjoy local sake with it. This page will be updated as needed.
Atotsugawa Cup, Hida city, Gifu pref.
The Atotsugawa Fault is a class A active fault, which is estimated to be the epicenter of the 1858 Hietsu earthquake. It is an active fault within the Niigata-Kobe Tectonic Zone, which is one of the most crustally active areas in the Japan. About 1858 Hietsu earthquake: wikipedia
Yunodake Cup, Iwaki city, Fukushima pref.
This is a cup made during a survey of the Yunodake fault, one of the earthquake faults exposed on the surface of the earth by the April 11, 2011 Iwaki earthquake (magnitude 6.6) in Iwaki city, Fukushima Prefecture, Japan. This earthquake was caused by a change in the state of forces acting on the Japan Islands after the 3.11 off the Tohoku-oki Earthquake (magnitude 9). About 2011 Iwaki Earthquake: wikipedia
Mineoka Cup, Kamogawa city, Chiba pref.
This is a cup made from a fault gouge found along a fault in serpentinite of the Paleogene Mineoka Group in the Boso Peninsula, Japan. Serpentinite is thought to be formed when ultrabasic rocks such as peridotite react with water and undergo serpentinization. Since peridotite is one of the rocks that make up the upper mantle, drinking from this boar's cup, made with the blessings of the mantle, may be a special treat. About Serpentinite: wikipedia
Matsusaka-iitaka Cup, Matsusaka city, Mie pref.
This is a cup made of fault gouge developed along the Median Tectonic Line, which is the Sambagawa metamorphic rocks at Iitaka, Matsusaka City, Mie Prefecture, Japan. The muddy schist of the Sambagawa metamorphic rock was deposited in the sea floor, and was subjected to high temperature and pressure at several tens of kilometers below the surface, deeper than the area where inland earthquakes occur, by subduction of the plate. About Geology of Japan: wikipedia
Tanakura Cup, Hanawa town, Fukushima pref.
The Tanagura Tectonic Line is a major fault line in Japan that runs from northern Ibaraki Prefecture to near Niigata Prefecture, and is considered to be the boundary between eastern and western Japan in geological terms. Therefore, the rocks on the two sides of the Tanagura Tectonic Line are different, and the color of the boar's mouth made from rocks on both sides of the Tanagura Tectonic Line is different. Photo from Dr. Horiguchi (AIST). About Geology of Japan: wikipedia
