is a

mountain range A mountain range or hill range is a series of mountains or hills arranged in a line and connected by high ground. A mountain system or mountain belt is a group of mountain ranges with similarity in form, structure, and alignment that have arise ...

Hokkaidō 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 la ...

Japan Japan ( ja, 日本, or , and formally , ''Nihonkoku'') is an island country in East Asia. It is situated in the northwest Pacific Ocean, and is bordered on the west by the Sea of Japan, while extending from the Sea of Okhotsk in the north ...

. Part of this range is protected by the .

Geology

The Yūbari Mountains continue the north–south line begun by the

Teshio Mountains Teshio Mountains (天塩山地 ''Teshio-sanchi'') is a mountain range A mountain range or hill range is a series of mountains or hills arranged in a line and connected by high ground. A mountain system or mountain belt is a group of mountain ...

. The mountains are the result of the collision between the Kurile Island Arc and the Northeastern Japan Arc. Three formations make up the Yūbari mountains: * Jurassic-Cretaceous formations. This forms the main ridge. It consists of serpentine and rocks of the Sorachi Group. The Sorachi Group consists of

chert Chert () is a hard, fine-grained sedimentary rock composed of microcrystalline or cryptocrystalline quartz, the mineral form of silicon dioxide (SiO2). Chert is characteristically of biological origin, but may also occur inorganically as a prec ...

greenschist Greenschists are metamorphic rocks that formed under the lowest temperatures and pressures usually produced by regional metamorphism, typically and 2–10 kilobars (). Greenschists commonly have an abundance of green minerals such as chlorite ...

micrite Micrite is a limestone constituent formed of calcareous particles ranging in diameter up to four μm formed by the recrystallization of lime mud. Flügel, Erik, ''Microfacies of Carbonate Rocks: Analysis, Interpretation and Application,'' Springe ...

limestone Limestone ( calcium carbonate ) is a type of carbonate sedimentary rock which is the main source of the material lime. It is composed mostly of the minerals calcite and aragonite, which are different crystal forms of . Limestone forms whe ...

, and

sandstone Sandstone is a clastic sedimentary rock composed mainly of sand-sized (0.0625 to 2 mm) silicate grains. Sandstones comprise about 20–25% of all sedimentary rocks. Most sandstone is composed of quartz or feldspar (both silicates) ...

with

felsic In geology, felsic is a modifier describing igneous rocks that are relatively rich in elements that form feldspar and quartz.Marshak, Stephen, 2009, ''Essentials of Geology,'' W. W. Norton & Company, 3rd ed. It is contrasted with mafic rocks, whi ...

tuff Tuff is a type of rock made of volcanic ash ejected from a vent during a volcanic eruption. Following ejection and deposition, the ash is lithified into a solid rock. Rock that contains greater than 75% ash is considered tuff, while rock cont ...

. * Cretaceous forearc sediments. These rocks of the Yezo Supergroup are arranged around the Jurassic-Creaceous formations. * Paleogene formations. These rocks lie to the west of the Cretaceous sediments. The paleogene formations include seams of

coal Coal is a combustible black or brownish-black sedimentary rock, formed as rock strata called coal seams. Coal is mostly carbon with variable amounts of other elements, chiefly hydrogen, sulfur, oxygen, and nitrogen. Coal is formed when dea ...

Peaks

Mount Yūbari is a mountain of the Yūbari Mountains. It is located On the border of Minamifurano, Hokkaidō, Minamifurano, Yūbari, Hokkaidō, Yūbari, Hokkaidō, Japan. References Geographical Survey Institute
Charm of Hokkaido {{DEFAULTSORT:Yubari M ...

Mount Ashibetsu is a mountain located on the border between Ashibetsu and Furano, Hokkaidō, Japan Japan ( ja, 日本, or , and formally , ''Nihonkoku'') is an island country in East Asia. It is situated in the northwest Pacific Ocean, and is bor ...

* Mount Furano Nishi * Mount Torumukeppu * Mount Hattaomanai * Mount Kirigishi *

Mount Hachimori Mount is often used as part of the name of specific mountains, e.g. Mount Everest. Mount or Mounts may also refer to: Places * Mount, Cornwall, a village in Warleggan parish, England * Mount, Perranzabuloe, a hamlet in Perranzabuloe parish, C ...

References

外部リンク

Furano-Ashibetsu Prefectural Natural Park
(Japanese) - Hokkaido Government Mountain ranges of Hokkaido {{Hokkaido-geo-stub