11:30 AM - 11:45 AM
[MIS10-10] The structural geological value of Mt. Chokai & Tobishima Island Geopark and its dissemination
Keywords:Mt. Chokai & Tobishima Island Geopark, Structural Geology, The Tohoku Geoparks Academic Researchers Meeting
Structural geology, which deals with plate movement and fault activity, provides important insights into the process by which the landscape we see has been formed. This knowledge is useful information for introducing geostories more dynamically in geoparks, which have many opportunities to introduce the formation of the earth to a wide range of people.
Mt. Chokai & Tobishima Island Geopark has set the theme of "The cycle of water and life from the Sea of Japan and the Earth" and has promoted a geostory that links the topographical and geological features of the active volcano, Mt. Chokai, the abundant spring water that springs up at its foot, the natural environment and unique cultural resources in the area, and the rain and snow brought by the seasonal winds that pass through the Sea of Japan. However, there is an issue in that the story has not clearly utilized knowledge of structural geology, except for the current landscape of the Kujukushima Islands, which was created by earthquake uplift, and Tobishima Island, which was created by seafloor uplift.
For example, when we use the geological site "Kujukushima Islands", which has international geological value, in educational activities and geotours, we tell the geostory that "the archipelago scenery that Matsuo Basho loved was lost due to the uplift of the ground caused by the earthquake in 1804. The reason that the scenery remains today is due to the efforts of the head priest of the temple that was the guardian of the Kujukushima Islands." However, in educational activities and geotours, we should explain that the uplift of the ground caused by earthquake activity was caused by crustal movements due to the compression of the northeastern Japan arc caused by the subduction of the Pacific plate, which became evident from about 3 million years ago, and that the accumulation of such crustal movements is related to the formation of the Dewa Mountains, which can be seen as a landscape, and the landification of Tobishima Island.
The Mt. Chokai & Tobishima Island Geopark Council annually hosts the Tohoku Geopark Academic Researchers Meeting, which is aimed at researchers in the Tohoku region and Tohoku geopark activities, providing an opportunity for researchers to share the results of their academic research and unsolved issues with geopark officials and certified geopark guides. In 2024, we invited four researchers to discuss the structural geology theme, and exchanged views both indoors and outdoors on the structural geological value and issues of the area of Mt. Chokai & Tobishima Island Geopark. The holding of this meeting will help to disseminate the international geological value of Mt. Chokai & Tobishima Island Geopark to local residents.
Mt. Chokai & Tobishima Island Geopark has set the theme of "The cycle of water and life from the Sea of Japan and the Earth" and has promoted a geostory that links the topographical and geological features of the active volcano, Mt. Chokai, the abundant spring water that springs up at its foot, the natural environment and unique cultural resources in the area, and the rain and snow brought by the seasonal winds that pass through the Sea of Japan. However, there is an issue in that the story has not clearly utilized knowledge of structural geology, except for the current landscape of the Kujukushima Islands, which was created by earthquake uplift, and Tobishima Island, which was created by seafloor uplift.
For example, when we use the geological site "Kujukushima Islands", which has international geological value, in educational activities and geotours, we tell the geostory that "the archipelago scenery that Matsuo Basho loved was lost due to the uplift of the ground caused by the earthquake in 1804. The reason that the scenery remains today is due to the efforts of the head priest of the temple that was the guardian of the Kujukushima Islands." However, in educational activities and geotours, we should explain that the uplift of the ground caused by earthquake activity was caused by crustal movements due to the compression of the northeastern Japan arc caused by the subduction of the Pacific plate, which became evident from about 3 million years ago, and that the accumulation of such crustal movements is related to the formation of the Dewa Mountains, which can be seen as a landscape, and the landification of Tobishima Island.
The Mt. Chokai & Tobishima Island Geopark Council annually hosts the Tohoku Geopark Academic Researchers Meeting, which is aimed at researchers in the Tohoku region and Tohoku geopark activities, providing an opportunity for researchers to share the results of their academic research and unsolved issues with geopark officials and certified geopark guides. In 2024, we invited four researchers to discuss the structural geology theme, and exchanged views both indoors and outdoors on the structural geological value and issues of the area of Mt. Chokai & Tobishima Island Geopark. The holding of this meeting will help to disseminate the international geological value of Mt. Chokai & Tobishima Island Geopark to local residents.