The main peak of the Ishikari Mountains in central Hokkaido. It is 1,967 meters above sea level. The ridgeline that stretches from the summit to the northeast and southwest divides Ishikari Province and Tokachi Province, which were established in 1869 (Meiji 2), and the mountain itself straddles Kamikawa Town under the Kamikawa General Subprefectural Bureau and Kamishihoro Town under the Tokachi General Subprefectural Bureau. The mountain is made up of the Hidaka Group of Palaeozoic strata, and the rock types include slate, greywacke, and hornfels. The mountainside below 1,500 meters is covered with natural forests, which are protected as conservation forests, with coniferous forests on the northern slopes and broadleaf and mixed forests on the southern slopes. The Ishikari River originates from the northern foot of the mountain, but at one time it was believed to originate from Mount Daisetsu, and Mount Daisetsu was called Ishikari-dake at the time. [Jiro Okamoto] Source: Shogakukan Encyclopedia Nipponica About Encyclopedia Nipponica Information | Legend |
北海道中央部の石狩山地の主峰。標高1967メートル。山頂から北東、南西に延びる稜線(りょうせん)は、1869年(明治2)設定された石狩国と十勝国を分け、山体は上川(かみかわ)総合振興局管内の上川町と十勝総合振興局管内の上士幌町(かみしほろちょう)にまたがる。山体は古生層の日高層群からなり、岩質は粘板岩、硬砂岩、ホルンフェルスなどである。1500メートル以下の山腹は天然林で覆われ、保安林として保護され、北斜面では針葉林、南斜面では広葉林、混交林となっている。北麓(ほくろく)から石狩川が発源するが、一時期、石狩川は大雪山(たいせつざん)から発源しているとされ、当時は大雪山を石狩岳と呼称した。 [岡本次郎] 出典 小学館 日本大百科全書(ニッポニカ)日本大百科全書(ニッポニカ)について 情報 | 凡例 |
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