Hida Highlands

Japanese: 飛驒高地 - ひだこうち

This mountain range extends from the west of the Hida Mountains (Northern Alps) to the north of Gifu Prefecture and the south of Toyama Prefecture. It is bounded in the west by the Ryohaku Mountains, and most of it is the basin of the Miyagawa River and Takahara River, which are the upper reaches of the Jinzu River, and the Shogawa River, while in the south it includes the upper reaches of the Hida River (Masuda River), which flows south and empties into the Kiso River. Although it is called a highland, it is a mid-mountain, early mature mountain range with an elevation of 1000 to 1500 meters, where the so-called Hida metamorphic rocks, such as gneiss and quartz porphyry, are widely exposed, and are accompanied by Palaeozoic and Mesozoic strata. There are many flat-topped peaks in the highland, which are thought to be relics of uplifted peneplains, and three levels can be recognized: 1500m, 1300m, and 1100m.

Source: Heibonsha World Encyclopedia, 2nd Edition Information

Japanese:

飛驒山脈(北アルプス)の西方に続き，岐阜県北部から富山県南部にかけて広がる山地。西は両白山地で限られ，その大部分は神通川上流の宮川と高原川，それに庄川の流域であり，南部では南流して木曾川に注ぐ飛驒川(益田（ました）川)の上流域が含まれる。高地の名はあるが，標高1000～1500mの中山性の早壮年期山地で，片麻岩や石英斑岩などのいわゆる飛驒変成岩が広く露出し，古生層と中生層を伴っている。高地中には山頂の平たんな峰がかなり多く，これらは隆起した準平原の遺物と考えられ，1500m，1300m，1100mの3段階が認められる。

出典　株式会社平凡社世界大百科事典第２版について　情報

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