Tsugaru Mountains - Tsugarusanchi

A mountain range in western Aomori Prefecture that forms the backbone of the Tsugaru Peninsula. It is a spur mountain range that forms a branch of the Ou Mountain Range, and runs 60 kilometers across the peninsula from north-northwest to south-southeast. The average elevation is about 400 meters. The western side forms a fault scarp and borders the Tsugaru Plain, while the eastern side also descends to a narrow coastal plain called Kamiisoheiya, accompanied by a fault scarp. The geology consists of Tertiary sandstone, tuff, shale, etc., with andesite and rhyolite also distributed. The forest is dominated by beech and cypress (hinoki-asunaro) forests, and the hinoki-asunaro (hiba) forests in particular were planted by the Hirosaki Domain.

[Hiroshi Yokoyama]

Source: Shogakukan Encyclopedia Nipponica About Encyclopedia Nipponica Information | Legend

青森県西部、津軽半島の脊梁(せきりょう)をなす山地。奥羽山脈の支脈をなす地塁山地で、北北西から南南東に約60キロメートルにわたって半島を縦走する。平均標高約400メートル。西側は断層崖(だんそうがい)をなして津軽平野に接し、東側も断層崖を伴って上磯平野(かみいそへいや)とよばれる狭長な海岸平野に下っている。地質は第三系の砂岩、凝灰岩、頁(けつ)岩などからなり、安山岩や流紋岩も分布している。林相はブナやヒノキアスナロ（ヒバ）林が多く、とくにヒバ林は弘前藩(ひろさきはん)の植林によるものである。

［横山　弘］

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