140724 Asahi-dake and Sugatami-no-ike Hokkaido Japan01bs3

is a mountain located near the town of

Higashikawa, Hokkaido is a town located in Kamikawa Subprefecture, Hokkaido, Japan. As of September 2016, the town has an estimated population of 8,092, and a density Density (volumetric mass density or specific mass) is the substance's mass per unit of vol ...

and the tallest mountain on the Japanese island of

Hokkaido is Japan's second largest island and comprises the largest and northernmost prefecture, making up its own region. The Tsugaru Strait separates Hokkaidō from Honshu; the two islands are connected by the undersea railway Seikan Tunnel. The lar ...

. It is part of the

Daisetsuzan Volcanic Group The is a volcanic group of peaks arranged around the wide caldera in Hokkaidō, Japan. In the Ainu language it is known as ''Nutapukaushipe'' (which means "the mountain above the river"),

of the

Ishikari Mountains The is a range of volcanic mountains in central Hokkaidō, Japan. The mountain range is made up from the Daisetsuzan Volcanic Group and the Tomuraushi Volcanic Group. The volcanoes are part of the Kurile arc of the Pacific ring of fire ...

, it is located in the northern part of the

Daisetsuzan National Park , or Taisetsuzan is located in the mountainous center of the northern Japanese island of Hokkaidō. At , Daisetsuzan is the largest national park in Japan, and is approximately the size of Kanagawa Prefecture. Daisetsuzan, meaning "great snowy mo ...

. Its native Ainu name is ''Kamui-mintara'', which means "the playground of the gods". The mountain is popular with hikers in the summer and can be easily reached from

Asahidake Onsen is a small village in Daisetsuzan National Park , or Taisetsuzan is located in the mountainous center of the northern Japanese island of Hokkaidō. At , Daisetsuzan is the largest national park in Japan, and is approximately the size of Kanag ...

via

Asahidake Ropeway The is Japanese aerial lift line in Asahidake Onsen, Higashikawa, Hokkaidō, Higashikawa, Hokkaidō, operated by . The ropeway line, founded in 1968 and refurbished in 2000, climbs Mount Asahi-dake of Daisetsuzan Volcanic Group, Daisetsuzan Mountai ...

. During winter, the mountain is open for use by skiers and snowboarders. Sugatami Pond, directly below the peak, is famous for its reflection of the peaks, snow, and steam escaping from the volcanic vents.

History

Sulphur was once mined in the

fumarolic A fumarole (or fumerole) is a vent in the surface of the Earth or other rocky planet from which hot volcanic gases and vapors are emitted, without any accompanying liquids or solids. Fumaroles are characteristic of the late stages of volc ...

areas.

Geology

Mount Asahi is an active stratovolcano, in height that arose southwest of the Ohachi-Daira caldera. The

Japan Meteorological Agency The , abbreviated JMA, is an agency of the Ministry of Land, Infrastructure, Transport and Tourism. It is charged with gathering and providing results for the public in Japan that are obtained from data based on daily scientific observation an ...

gave the region rank C in volcanic activity. The volcano consists mainly of

andesite Andesite () is a volcanic rock of intermediate composition. In a general sense, it is the intermediate type between silica-poor basalt and silica-rich rhyolite. It is fine-grained (aphanitic) to porphyritic in texture, and is composed predo ...

and

dacite Dacite () is a volcanic rock formed by rapid solidification of lava that is high in silica and low in alkali metal oxides. It has a fine-grained (aphanitic) to porphyritic texture and is intermediate in composition between andesite and rhyolite ...

Holocene The Holocene ( ) is the current geological epoch. It began approximately 11,650 cal years Before Present (), after the Last Glacial Period, which concluded with the Holocene glacial retreat. The Holocene and the preceding Pleistocene togeth ...

volcanic non-alkali

mafic A mafic mineral or rock is a silicate mineral or igneous rock rich in magnesium and iron. Most mafic minerals are dark in color, and common rock-forming mafic minerals include olivine, pyroxene, amphibole, and biotite. Common mafic rocks incl ...

rock less than 18,000 years old. In addition to the main peak, there is a smaller volcano emerging from the southeast shoulder of the mountain, .

Eruptive history

Whilst there is no historical record of the eruptions of Mount Asahi, tephrochronology and radiocarbon dating have determined the following events: * 3200 BC ± 75 years, Asahi Soria deposit, corrected radiocarbon dating, explosive eruption * 2800 BC ± 100 years, As-A tephra, corrected radiocarbon dating, explosive eruption and phreatic explosions * 1450 BC ± 50 years, As-B tephra, uncorrected radiocarbon dating, explosive eruption and phreatic explosions * 500 BC ± 50 years, Ash-b tephra, tephrochonology, explosive eruption and phreatic explosions and debris avalanches * 1739, tephrochronology, explosive eruption and phreatic explosions with possible eruption of the central vent and radial good Mount Asahi currently exhibits steam activity in the form of fumaroles.

References

* * Watanabe, Teiji and Hauser, Markus.
ASAHI-DAKE: The heart of the Daisetsuzan National Park
'' Hiking map 1:25,000''.'' Alice Inc. (2017)

External links

*
Ropeway website
*
Official tourism information website
Stratovolcanoes of Japan Volcanoes of Hokkaido Mountains of Hokkaido Highest points of Japanese national parks {{Hokkaido-geo-stub

History

Geology

Eruptive history

See also

References

External links