Mount Iwate

Last updated • 1 min readFrom Wikipedia, The Free Encyclopedia
Mount Iwate
Mt. Iwate and Morioka.jpg
Mount Iwate from the city of Morioka
Highest point
Elevation 2,038 m (6,686 ft) [1]
Prominence 1,745 m (5,725 ft) [1]
Listing 100 Famous Mountains of Japan
Ultra, Ribu
Coordinates 39°51′12″N141°00′03″E / 39.85333°N 141.00083°E / 39.85333; 141.00083 [1]
Naming
Native name岩手山 (Japanese)
Geography
Iwate-ken geolocalisation relief.svg
Red triangle with thick white border.svg
Mount Iwate
Mount Iwate
Japan natural location map with side map of the Ryukyu Islands.jpg
Red triangle with thick white border.svg
Mount Iwate
Mount Iwate (Japan)
Location Iwate Prefecture, Japan
Parent range Ōu Mountains
Geology
Mountain type Stratovolcano complex
Last eruption July 1919

Mount Iwate (岩手山, Iwate-san) is a stratovolcano complex in the Ōu Mountains of western Iwate Prefecture, in the Tōhoku region of northern Honshū, Japan. With an elevation of 2,038 metres (6,686 ft), it is the highest in Iwate Prefecture. It is included as one of the 100 famous mountains in Japan, a book composed in 1964 by mountaineer and author Kyūya Fukada. [2] The mountain is on the borders of the municipalities of Hachimantai, Takizawa, and Shizukuishi, west of the prefectural capital of Morioka. Much of the mountain is within the borders of the Towada-Hachimantai National Park. [3] [4] [5] The mountain is also referred to as the "Nanbu Fuji" for its resemblance to Mount Fuji.

Contents

Geology

Aerial photographs of Mount Iwate from the NNW 151101 Mt Iwate Japan02bs.jpg
Aerial photographs of Mount Iwate from the NNW
Relief Map Mount Iwate Relief Map, SRTM.jpg
Relief Map

Mount Iwate consists of a younger eastern symmetrical stratovolcano (Higashi-Iwate, "East Iwate") overlapping an older western stratovolcano (Nishi-Iwate, "West Iwate") which has collapsed to form a caldera. [6] Nishi-Iwate was formed approximately 700,000 years ago, and forms two-thirds of the mountain body. Higashi-Iwate was a later (300,000 years ago) parasitic volcano, which now forms the summit of the mountain. The oval-shaped, 1.8 x 3 km caldera of Nishi-Iwate has a 0.5 km wide crater, partially filled by a crater lake called Lake Onawashiro. Several somma including Yakushidake, the largest, surround the more recent Higashi Iwate crater rim.

During the historical period, Mount Iwate erupted in 1686-1687 with a pyroclastic surge; however, the eruption of 1732 was much larger and resulted in a substantial lava flow on the northeast slopes of the mountain. This four-kilometre long lava flow ("Yakebashiri Lava Flow") has been designated a Natural Monument by the Japanese government. Mount Iwate has largely been quiet since 1732, with a small emission of steam and ash in 1919 and a series of volcanic earthquakes from 1998 to 2003.

Summit crater of the Mount Iwate Panoramic around the crater of Mount Iwate.jpg
Summit crater of the Mount Iwate

See also

Related Research Articles

<span class="mw-page-title-main">Lake Mashū</span> Crater lake in Akan Mashu National Park, Hokkaido island, Japan

Lake Mashū is an endorheic crater lake formed in the caldera of a potentially active volcano. It is located in Akan Mashu National Park on the island of Hokkaido, Japan. It has been called the clearest lake in the world.

<span class="mw-page-title-main">Mount Haruna</span> Dormant volcano in Japan

Mount Haruna is a dormant stratovolcano in Gunma Prefecture, in the Kantō region of eastern Honshū, Japan.

<span class="mw-page-title-main">Mount Aso</span> Volcano in Kumamoto Prefecture, Japan

Mount Aso or Aso Volcano is the largest active volcano in Japan and among the largest in the world. Common use relates often only to the somma volcano in the centre of Aso Caldera. It stands in Aso Kujū National Park in Kumamoto Prefecture, on the island of Kyushu. Its tallest peak, Takadake, is 1,592 meters (5,223 ft) above sea level. Mount Aso is in a fairly large caldera with a circumference of around 120 km (75 mi), although sources vary on the exact distance. It is one of the 100 Famous Japanese Mountains.

<span class="mw-page-title-main">Lake Towada</span> Caldera lake in Aomori, Japan

Lake Towada is the largest crater lake in Honshū island, Japan. Located on the border between Aomori and Akita prefectures, it lies 400 meters (1,800 ft) above sea level and is 327 m (1,073 ft) deep, drained by the Oirase River. With a surface area of 61.1 km2 (23.6 sq mi), Towada is Japan's 12th largest lake; its bright blue color is due to its great depth. The lake is roughly circular, with two peninsulas extending from its southern shore approximately one-third into the center of the lake. The lake is a popular tourist destination.

<span class="mw-page-title-main">Active volcano</span> Geological feature

An active volcano is a volcano that has erupted during the Holocene, is currently erupting, or has the potential to erupt in the future. A volcano that is not currently erupting but could erupt in the future is known as a dormant volcano. Volcanoes that will not erupt again are known as extinct volcanoes.

<span class="mw-page-title-main">Hakkōda Mountains</span> Volcanic complex in Aomori Prefecture, Japan

The Hakkōda Mountains are an active volcanic complex in south-central Aomori Prefecture, Japan, in Towada-Hachimantai National Park. Often called Mount Hakkōda or simply Hakkōda (八甲田), the mountains are collectively listed as one of the 100 Famous Japanese Mountains. Its highest peak, Mount Ōdake, lies 21.3 kilometers (13.2 mi) southeast of central Aomori and 28 kilometers (17 mi) west of central Towada and has an elevation of 1,585 meters (5,200 ft). The Hakkōda Mountains are a part Ōu Mountains which make up part of the Northeastern Japan Arc, a segment of the Pacific Ring of Fire. The volcanic complex consists of fourteen stratovolcanoes and lava domes arranged into two volcanic groups. The Northern Hakkōda Volcanic Group emerges from the rim of an 8-kilometer-wide (5.0 mi) caldera that dates back to the Pleistocene. The Southern Hakkōda Volcanic Group predates the caldera.

<span class="mw-page-title-main">Mount Tate</span> Mountain in the country of Japan

Mount Tate, also known as Tateyama, is a mountain located in the southeastern area of Toyama Prefecture, Japan. It is one of the tallest mountains in the Hida Mountains at 3,015 m (9,892 ft) and one of Japan's Three Holy Mountains along with Mount Fuji and Mount Haku. Tateyama consists of three peaks: Ōnanjiyama, Oyama, and Fuji-no-Oritate, which form a ridge line. Tateyama is the tallest mountain in the Tateyama Mountain Range.

<span class="mw-page-title-main">Mount Longonot</span> Volcano in Kenya

Mount Longonot is a stratovolcano located southeast of Lake Naivasha in the Great Rift Valley of Kenya, Africa. It is thought to have last erupted in the 1860s. Its name is derived from the Maasai word Oloonong'ot, meaning "mountains of many spurs" or "steep ridges".

<span class="mw-page-title-main">Mount Chōkai</span> Active volcano in the Tohoku region of Japan

Mount Chōkai is an active volcano located on the border of Akita and Yamagata in the Tōhoku region of Japan, and is 2,236 m (7,336 ft) tall. Because of its (roughly) symmetrical shape and massive size, it is also variously known as Dewa Fuji (出羽富士), Akita Fuji (秋田富士) or Shōnai Fuji (庄内富士) depending on the location of the viewer. In addition to being one of the 100 Famous Landscapes of Japan, it is also included as one of the 100 famous mountains in Japan, and famous 100 Geographical Features of Japan. It is surrounded by Chōkai Quasi-National Park. It is also a National Historic Site of Japan, and is regarded as a sacred mountain by followers of the Shugendō branch of Shinto which has the shrine Chōkaisan Ōmonoimi Shrine there and is popular with hikers.

<span class="mw-page-title-main">Hachimantai, Iwate</span> City in Tōhoku, Japan

Hachimantai is a city located in Iwate Prefecture, Japan. As of 1 April 2020, the city had an estimated population of 25,076, and a population density of 29 persons per km2 in 10,531 households. The total area of the city is 862.30 square kilometres (332.94 sq mi).

<span class="mw-page-title-main">Mount Kaimon</span> Volcano on the island of Kyushu, Japan

Kaimondake, or Mount Kaimon, is an undissected volcano – consisting of a basal stratovolcano and a small complex central lava dome – which rises to a height of 924 metres above sea level near the city of Ibusuki in southern Kyūshū, Japan. The last eruption occurred in the year 885 CE. Because of its conic shape, Mt. Kaimon is sometimes referred to as "the Fuji of Satsuma". It is one of the 100 Famous Japanese Mountains.

<span class="mw-page-title-main">Mount Myōkō</span> Active stratovolcano on the island of Honshu in Japan

Mount Myōkō is an active stratovolcano in Honshu, Japan. It is situated at the southwest of Myōkō city, Niigata Prefecture, and a part of Jōshin'etsu-kōgen National Park. Mount Myōkō is listed as one of 100 Famous Japanese Mountains, and together with Mount Yahiko, it is well known as the "famous mountain" of Niigata Prefecture.

<span class="mw-page-title-main">Mount Iwaki</span> Stratovolcano in Aomori Prefecture, Japan

Mount Iwaki is a stratovolcano located in western Aomori Prefecture, Tohoku, Japan. It is also referred to as Tsugaru Fuji (津軽富士) and less frequently, Okufuji (奥富士) due to its similar shape to Mount Fuji. With a summit elevation of 1,625 meters (5,331 ft) and a prominence of 1,362 meters (4,469 ft) it is the highest mountain in Aomori Prefecture.

<span class="mw-page-title-main">Tequila Volcano</span>

Tequila Volcano, or Volcán de Tequila is a stratovolcano located near Tequila, Jalisco, in Mexico. It stands at a height of 2,920 meters above sea level. Stratovolcanoes, also referred to as composite volcanoes, are the "iconically" conical-shaped volcanoes, found most commonly along subduction zones. Stratovolcanoes are composed of steeply dipping layers of lava, hardened ash, and other material that erupted from the main vent such as tephra and pumice. Commonly higher than 2500 meters above sea-level, Stratovolcanoes have gentle lower slopes which gradually become steeper the higher you get with a relatively small summit crater. Due to their eruptions, Stratovolcanoes have several distinct variations giving some a specific feature such as calderas and amphitheaters.

<span class="mw-page-title-main">Akan Volcanic Complex</span> Volcanic complex that grew out of the Akan caldera

Akan Volcanic Complex is a volcanic group of volcanoes that grew out of the Akan caldera. It is located within Akan National Park, about 50 km Northwest of Kushiro in eastern Hokkaidō, Japan.

<span class="mw-page-title-main">Mount Oakan</span> Stratovolcano/Lava dome on the island of Hokkaido, Japan

Mount Oakan is a stratovolcano located in Akan National Park in Hokkaidō, Japan.

<span class="mw-page-title-main">Mount Hachimantai</span> Highest peak in a group of stratovolcanoes in Honshu, Japan

Mount Hachimantai is the highest peak of a group of stratovolcanos distributed around the Hachimantai plateau in the Ōu Mountains in northern Honshū, Japan. This volcanic plateau is part of the Nasu Volcanic Zone and straddles the border between the Iwate Prefecture and Akita Prefecture. The volcano is listed as one of the 100 Famous Japanese Mountains, and forms part of the Towada-Hachimantai National Park.

<span class="mw-page-title-main">Mount Akita-Komagatake</span> Active volcano on the island of Honshu in Japan

Akita-Komagatake is an active stratovolcano located 10 km east of Tazawa Lake, near the border between Akita and Iwate prefectures on Honshu Island. The volcano last erupted from 18 September 1970 to 25 January 1971. It is the highest mountain in Akita Prefecture and the second highest in Towada-Hachimantai National Park.

<span class="mw-page-title-main">Mount Kurikoma</span> Stratovolcano in Japan

Mount Kurikoma, also known as Kurikomayama and Sukawadake is an active stratovolcano in Japan that stands 1,627 m (5,338 ft) tall. The volcano is located in Iwate Prefecture on Honshu. In addition to recent eruptions, the volcano is seismically active. It is the main feature of Kurikoma Quasi-National Park and a tourist attraction due to its hot springs, hiking trails and flora.

References

  1. 1 2 3 "Japan Ultra-Prominences". Peaklist.org. Retrieved 2015-01-01.
  2. Hyakumeizan, Hiking Japan! Archived 2007-01-09 at the Wayback Machine . Japan Gazetteer. Accessed June 27, 2008.
  3. "Introducing places of interest: Towada-Hachimantai National Park". Ministry of the Environment. Archived from the original on 27 February 2012. Retrieved 29 February 2012.
  4. "Towada-Hachimantai National Park". Natural Parks Foundation. Archived from the original on 3 July 2017. Retrieved 29 February 2012.
  5. Sutherland, Mary; Britton, Dorothy (1995). National Parks of Japan. Kodansha. pp. 48–50. ISBN   4-7700-1971-8.
  6. "Iwatesan". Global Volcanism Program . Smithsonian Institution.