Kameoka Basin

This tectonic basin is located in the southern part of Kyoto Prefecture, in the southern part of the Tamba Highlands. It is long and narrow, stretching about 10 km north to south and 3.5 km east to west, and its eastern edge is bounded by a steep fault scarp running from northwest to southeast, while its western edge is made up of flat mountains and shallowly dissected valleys, forming an irregular foothill line. The floor of the basin is made up of a complex small alluvial fan developed below the fault scarp and the floodplain of the Oi River. As the remains of the jori system indicate, the area has been developed since ancient times by irrigation from the Oi River, and rice paddies are well developed, but in recent years, vegetable cultivation to supply Kyoto City has also become popular. The central settlement of Kameoka City is located in the southern part of the basin, and the central settlement of the Yagicho district of Nantan City is located in the northern part. Residential development for commuters to Kyoto City is increasing.

[Takeo Oda]

Source: Shogakukan Encyclopedia Nipponica About Encyclopedia Nipponica Information | Legend

京都府南部、丹波(たんば)高地南部に位置する構造盆地。南北約10キロメートル、東西約3.5キロメートルで南北に細長く、東縁は西北から東南にかけての急斜面の断層崖(がい)によって画されているが、西縁は起伏の少ない山地と浅く開析された谷がみられ、不規則な山麓(さんろく)線をなしている。盆地床は断層崖下に発達する複合小扇状地と大堰(おおい)川の氾濫原(はんらんげん)からなる。条里制の遺構が示すように、大堰川からの灌漑(かんがい)によって古くから開発され、水田がよく発達しているが、近年は京都市に供給する野菜栽培も盛んである。盆地の南部には亀岡市、北部には南丹(なんたん)市八木町(やぎちょう)地区の中心集落が位置する。京都市への通勤者の宅地化が増加している。

［織田武雄］

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