Chita Peninsula

A long, narrow peninsula jutting out from north to south into Ise Bay, south of Nagoya City, Aichi Prefecture. It is 40 kilometers long and 5 to 14 kilometers wide. A group of islands are scattered offshore at the tip, dividing Ise Bay and Mikawa Bay. The topography is a hilly area with a low north and high south, with an elevation of about 40 meters in the north, 70 meters in the middle, and 90 to 100 meters at the tip south of Noma-Kawa, and it gets higher as you go south. The Otaka-Obu fault runs between the peninsula and the Owari Hills. The geology is generally Neogene, with the Tokoname Group in the central and northern parts and the Morozaki Group (sandstone, shale) in the southern part. The strata slope northward, and a magnificent sea cliff can be seen at the tip. The sandstone vein of Oza (Minamichita Town), which has attracted geological attention, is said to be a fossil of liquefaction during an earthquake, and the conglomerate area of ​​the inland sea is Ryoke metamorphic rock and is considered evidence of a submarine landslide. The remote island of Himakajima is made of alternating layers of sandstone and shale from the Shizaki Group, and the entire island of Shinojima is made of granite.

The climate is generally warm, with an average annual temperature of around 15°C and an average annual precipitation of around 1,500 mm. In the past, numerous reservoirs were used for rice paddy cultivation, but the water shortage was eliminated after the Aichi Irrigation Canal was opened. In the central and northern parts of the coast, the coastal industrial areas of Southern Nagoya and Kinuura were formed by reclaiming shallow seas, and the southern part has become a tourist area with beaches, tourist mandarin orange orchards, and fishing.

[Gohei Ito]

Source: Shogakukan Encyclopedia Nipponica About Encyclopedia Nipponica Information | Legend

愛知県名古屋市南方、伊勢(いせ)湾に突出する南北に細長い半島。長さ40キロメートル、幅5～14キロメートル。先端沖に島嶼(とうしょ)群を散在させ、伊勢湾と三河湾を分ける。地形は「北低南高型」の丘陵で、標高は北部約40メートル、中部約70メートル、野間―河和(こうわ)を結ぶ以南の先端部は90～100メートルで南行するほど高くなっている。尾張(おわり)丘陵との間には大高―大府断層が走っている。地質は全般に新第三紀層で、中北部は常滑(とこなめ)層群、南部は師崎(もろざき)層群（砂岩、頁(けつ)岩）からなり、地層は北に傾斜し、先端部にはみごとな海食崖(がい)がみられる。地学上注目されている小佐(おざ)（南知多町）の「砂岩脈」は地震の際の液状化の化石ともいわれ、内海(うつみ)の「礫岩(つぶていわ)」一帯は領家(りょうけ)変成岩で海底地すべりの証左とされている。離島の日間賀(ひまか)島は師崎層群の砂岩・頁岩の互層、篠(しの)島は全島が花崗(かこう)岩からなっている。

　気候は一般に温暖で年平均気温15℃内外、年降水量は1500ミリメートル内外で、かつては多数の溜池(ためいけ)群によって水田耕作が行われたが、愛知用水通水後は乏水性が解消された。沿岸部の中部以北には遠浅の海を埋め立てた名古屋南部、衣浦(きぬうら)両臨海工業地域が形成され、南部は海水浴場、観光ミカン園、釣りなどの観光地域になっている。

［伊藤郷平］

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