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Hidaka Mountains : ウィキペディア英語版 | Hidaka Mountains
is a mountain range in southeastern Hokkaido, Japan. It runs 150 km from Mount Sahoro or Karikachi Pass〔 in central Hokkaidō south, running into the sea at Cape Erimo. It consists of folded mountains that range from 1500 to 2000 metres in height. Mount Poroshiri is the highest at 2052 m. The Hidaka Mountains separate the subprefectures of Hidaka and Tokachi. Most of the range lies in the Hidaka-sanmyaku Erimo Quasi-National Park (日高山脈襟裳国定公園, ''Hidaka-sanmyaku Erimo Kokutei-kōen''). Since the mountain range lies so far north, the alpine climate zone lies at a lower altitude. ==Geology== The Hidaka Mountains formed in the late Quaternary as part of the outer arc of the western end of the Kurile island arc.〔(GLGarcs ), ''Introduction to the Landforms and Geology of Japan'', Central area (Collision Zone)〕 They were formed by the uplift resulting from the collision with the Kurile arc and the Northeast Japan Arc.〔(GLGarcs ), ''Introduction to the Landforms and Geology of Japan'', Landforms〕 The Hidaka mountains no longer appear to be uplifting.〔(GLGarcs ), ''Introduction to the Landforms and Geology of Japan'', Eastern area〕 The western end of the range is high P/T metamorphoseed Jurassic accretionary complex as part of the Kamuikotan belt. This is characterized by sedimentary rocks from the Cretaceous and Jurassic-Lower Cretaceous periods. The eastern end of the range is tertiary metamorphic rock as part of the Hidaka Metamorphic belt. This is characterized by low to medium pressure metamorphic rocks with sedimentary rocks from the Cretaceous-Lower Miocene. Plutonic rocks intrude into these structures.〔(GLGarcs ), ''Introduction to the Landforms and Geology of Japan'', Overview of geology〕〔(GLGarcs ), ''Introduction to the Landforms and Geology of Japan'', Hokkaido〕 For the most part, the Hidaka mountains are composed of schists, migmatites, gneisses, and granites.〔Paul Hunt, ''Hiking in Japan: An Adventurer's Guide to the Mountain Trails'', pg. 35〕
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