Located in the center of Ehime Prefecture, this peninsula juts out into the Seto Inland Sea. To the north is the Kurushima Strait and Imabari Plain, to the east the Hiuchi Nada Sea and Shuso Plain, to the west the Itsuki Nada Sea and Matsuyama Plain, and to the south the Ishizuchi Fault Line. The northern inner zone of the Median Tectonic Line is made up of the Mesozoic Ryoke Granite Belt, and its highest peaks, Higashimikatagamori (1,233 meters), Naraharayama (1,042 meters), and Myojingamori (1,217 meters), are old volcanoes. Mount Takanawa (986 meters) is known for Takanawa Castle, built by the Kono clan in the Middle Ages, and Takanawa Temple. Rivers such as the Nakayama River, Daimyojin River, Tonda River, Soja River, Tateiwa River, Shigenobu River, and Ishite River flow out of these mountains, and through reservoirs and dams, they serve as important sources of water for the surrounding cities and farmland. There are also hot springs such as Dogo, Okudogo, Nibukawa, and Gongen, and parts of them belong to Okudogo Tamagawa Prefectural Natural Park and Setonaikai National Park. [Kazuo Fukaishi] Source: Shogakukan Encyclopedia Nipponica About Encyclopedia Nipponica Information | Legend |
愛媛県中央部にあり、瀬戸内海に突き出た半島。北に来島(くるしま)海峡と今治(いまばり)平野、東に燧灘(ひうちなだ)と周桑(しゅうそう)平野、西に斎(いつき)灘と松山平野、南に石鎚(いしづち)断層線がある。中央構造線の北側内帯で中生代領家花崗(りょうけかこう)岩帯からなり、最高峰の東三方ヶ森(1233メートル)、楢原(ならばら)山(1042メートル)、明神(みょうじん)ヶ森(1217メートル)などは古い火山。高縄山(986メートル)は中世に河野氏が築城した高縄城、高縄寺の所在で知られる。これらの山地から中山(なかやま)川、大明神川、頓田(とんだ)川、蒼社(そうじゃ)川、立岩(たていわ)川、重信(しげのぶ)川、石手(いして)川などが流出し、溜池(ためいけ)、ダムなどにより周辺の都市や農地に対し用水の重要な供給源となっている。道後(どうご)、奥道後、鈍川(にぶかわ)、権現(ごんげん)などの温泉もあり、一部は奥道後玉川県立自然公園と瀬戸内海国立公園に属する。 [深石一夫] 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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