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Mount Mekunnai
is an andesitic volcano in the Mount Raiden Volcanic Group on the border between Iwanai and Rankoshi, Hokkaidō, Japan. Mount Mekunnai is a pyroclastic cone. The mountain consists of primarily 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 include ..., volcanic rock. The rock is younger than that of neighboring Mount Raiden, being categorized at 700,000 to 13,000 years old. The rock is older than that of the Niseko Volcanic Group. References Geographical Survey Institute Mekunnai Mekunnai {{Hokkaido-geo-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Niseko Annupuri
Niseko ( ja, ニセコ町, , ) is a town located in Shiribeshi Subprefecture, Hokkaido, Japan. To Japanese people, Niseko principally refers to a mountain range and a municipal area. However, overseas the name has come to refer to a wider area of ski resorts encompassing Hokkaido's Mount Yōtei, often referred to as the "Mt. Fuji of Hokkaido", and Annupuri ranges. The name Niseko derives from the Ainu language, and it means "a cliff jutting over a riverbank deep in the mountains". The Niseko town's main industries are agriculture and tourism. The resort itself, Niseko United, is part of the Mountain Collective. Moreover, the town is renowned for its quality powder snow and world-class facilities, including traditional onsen and restaurants. Town The town had an estimated population of 4,938 as of 30 September 2017, and a density of . The total number of visitors during the 2009 winter season was 201,000.Snow Place Like Home – Monocle, 10 February 2010 The total area is . Resor ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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 predominantly of sodium-rich plagioclase plus pyroxene or hornblende. Andesite is the extrusive equivalent of plutonic diorite. Characteristic of subduction zones, andesite represents the dominant rock type in island arcs. The average composition of the continental crust is andesitic. Along with basalts, andesites are a component of the Martian crust. The name ''andesite'' is derived from the Andes mountain range, where this rock type is found in abundance. It was first applied by Christian Leopold von Buch in 1826. Description Andesite is an aphanitic (fine-grained) igneous rock that is intermediate in its content of silica and low in alkali metals. It has less than 20% quartz and 10% feldspathoid by volume, with at least 65% of the fe ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Niseko Volcanic Group
Niseko Volcanic Group is a volcanic group of active stratovolcanoes and lava domes situated in Hokkaidō, Japan. The volcanoes are younger than 400,000 years. The last eruption was 6,000 to 7,000 years ago. Today Iwaonupuri shows 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 volcani ... activity. List of peaks Niseko Volcanic Group * Mount Niseko Annupuri ( ニセコアンヌプリ) * Mount Iwaonupuri ( イワオヌプリ) * Mount Waisuhorun (Weisshorn, ワイスホルン) * Mount Nitonupuri ( ニトヌプリ) * Mount Chisenupuri ( チセヌプリ) * Mount Shirakaba (白樺山) * Mount Mekunnaidake ( 目国内岳) Raiden Volcano Group * Mount Raiden ( 雷電山) * Mount Mekunnaidake ( 目国内岳) * Mount Iwanaidake (岩内岳) See also * List of volcanoes in Ja ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mount Raiden
is an andesitic volcano in the Mount Raiden Volcanic Group on the border between Iwanai and Rankoshi, Hokkaidō, Japan. Mount Raiden is a pyroclastic cone. The mountain consists of primarily 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 include ..., volcanic rock. References Geographical Survey Institute Volcanoes of Hokkaido Mountains of Hokkaido {{Hokkaido-geo-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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 include basalt, diabase and gabbro. Mafic rocks often also contain calcium-rich varieties of plagioclase feldspar. Mafic materials can also be described as ferromagnesian. History The term ''mafic'' is a portmanteau of "magnesium" and "ferric" and was coined by Charles Whitman Cross, Joseph P. Iddings, Louis Valentine Pirsson, and Henry Stephens Washington in 1912. Cross' group had previously divided the major rock-forming minerals found in igneous rocks into ''salic'' minerals, such as quartz, feldspars, or feldspathoids, and ''femic'' minerals, such as olivine and pyroxene. However, micas and aluminium-rich amphiboles were excluded, while some calcium minerals containing little iron or magnesium, such as wollastonite or apatite, were included ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rankoshi, Hokkaidō
is a town located in Shiribeshi Subprefecture, Hokkaido, Japan. As of September 2016, the town has an estimated population of 4,893, and a density of 11 persons per km2. The total area is 449.68 km2. Geography Shiribetsu River flows through Rankoshi to the Sea of Japan. The town is surrounded by Niseko Volcanic Group, which belongs to Niseko-Shakotan-Otaru Kaigan Quasi-National Park. The name is derived from Ainu word "Ranko-usi", meaning "Place with many Katsura trees". *Mountains: Mount Raiden, Mount Mekunnai, Mount Chisenupuri, Mount Nitonupuri Neighboring towns * Shiribeshi Subprefecture ** Suttsu ** Kuromatsunai ** Kutchan ** Niseko ** Iwanai * Iburi Subprefecture ** Toyoura Climate History *1909: Minamishiribeshi became a Second Class Village. *1940: Minamishiribeshi became a First Class Village. *1954: Minamishiribeshi Village became Rankoshi Town. *1955: A part of Suttsu Town was merged into Rankoshi Town. Education * High school ** Hokkaido Rankoshi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Iwanai, Hokkaidō
is a List of towns in Japan, town located in Shiribeshi Subprefecture, Hokkaido, Japan. As of September 2016, the town has an estimated population of 13,210. The total area is 70.64 km2. History Iwanai is one of the oldest towns in the region. Unlike many Hokkaido towns, it predates the Meiji Restoration, having started as a seasonal fishing location c. 1450, and developing into a year-round village in the mid-18th century. (Its official founding date is 1751). Citizens of Iwanai whose families have been native for many generations have a peculiar "fisherman" accent to their Japanese, distinct to others living in the region. (Most Hokkaido citizens speak Kantō, or Tokyo region, dialect; their ancestors emigrated from the Kantō region in the late 19th century). Unfortunately, a massive fire in 1954 destroyed most of the traditional buildings, as they were mostly wooden structures. Modern Iwanai is much more Western in style, although there are still extensive Shinto shrine ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Volcano
A volcano is a rupture in the crust of a planetary-mass object, such as Earth, that allows hot lava, volcanic ash, and gases to escape from a magma chamber below the surface. On Earth, volcanoes are most often found where tectonic plates are diverging or converging, and most are found underwater. For example, a mid-ocean ridge, such as the Mid-Atlantic Ridge, has volcanoes caused by divergent tectonic plates whereas the Pacific Ring of Fire has volcanoes caused by convergent tectonic plates. Volcanoes can also form where there is stretching and thinning of the crust's plates, such as in the East African Rift and the Wells Gray-Clearwater volcanic field and Rio Grande rift in North America. Volcanism away from plate boundaries has been postulated to arise from upwelling diapirs from the core–mantle boundary, deep in the Earth. This results in hotspot volcanism, of which the Hawaiian hotspot is an example. Volcanoes are usually not created where two tectonic plates slide ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
List Of Mountains And Hills Of Japan By Height ...
The following is a list of the mountains and hills of Japan, ordered by height. Mountains over 1000 meters Mountains under 1000 meters As the generally accepted definition of a mountain (versus a hill) is 1000 m of height and 500 m of prominence, the following list is provided for convenience only. See also * List of Japanese prefectures by highest mountain References External links Mt. Nakanodake：Hiking route｜Snow Country* * Japan 100 Mountains {{DEFAULTSORT:List Of Mountains And Hills Of Japan By Height Mountains of Japan Height Height is measure of vertical distance, either vertical extent (how "tall" something or someone is) or vertical position (how "high" a point is). For example, "The height of that building is 50 m" or "The height of an airplane in-flight is abou ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Quaternary
The Quaternary ( ) is the current and most recent of the three periods of the Cenozoic Era in the geologic time scale of the International Commission on Stratigraphy (ICS). It follows the Neogene Period and spans from 2.58 million years ago to the present. The Quaternary Period is divided into two epochs: the Pleistocene (2.58 million years ago to 11.7 thousand years ago) and the Holocene (11.7 thousand years ago to today, although a third epoch, the Anthropocene, has been proposed but is not yet officially recognised by the ICS). The Quaternary Period is typically defined by the cyclic growth and decay of continental ice sheets related to the Milankovitch cycles and the associated climate and environmental changes that they caused. Research history In 1759 Giovanni Arduino proposed that the geological strata of northern Italy could be divided into four successive formations or "orders" ( it, quattro ordini). The term "quaternary" was introduced by Jules Desnoye ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pyroclastic Cone
Volcanic cones are among the simplest volcanic landforms. They are built by ejecta from a volcanic vent, piling up around the vent in the shape of a cone with a central crater. Volcanic cones are of different types, depending upon the nature and size of the fragments ejected during the eruption. Types of volcanic cones include stratocones, spatter cones, tuff cones, and cinder cones. Stratocone Stratocones are large cone-shaped volcanoes made up of lava flows, explosively erupted pyroclastic rocks, and igneous intrusives that are typically centered around a cylindrical vent. Unlike shield volcanoes, they are characterized by a steep profile and periodic, often alternating, explosive eruptions and effusive eruptions. Some have collapsed craters called calderas. The central core of a stratocone is commonly dominated by a central core of intrusive rocks that range from around to over several kilometers in diameter. This central core is surrounded by multiple generations of lava f ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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