Obanazawa Basin

...It is also called the Murayama Basin. To the north is the Obanazawa Basin, separated by the Sodezaki Hills, and to the south is the Kaminoyama Basin, separated by the volcanic mudflow of Zao Kanakame. In a broad sense, these small basins are all included in the Yamagata Basin. To the east is the Ou Mountains, which include the volcanic groups of Zao, Omoshiroyama (1,264m), and Funagatayama (Goshoyama), and to the west is the Dewa Mountains, which include the volcanoes Hayama and Shiratakayama. Each is a fault graben basin bounded by the Yamagata (Takiyama) Fault Escarpment and Takatoyayama Fault Escarpment.

*Some of the terminology that refers to the Obanazawa Basin is listed below.

Source | Heibonsha World Encyclopedia 2nd Edition | Information

…村山盆地ともいう。北に袖崎丘陵を境として尾花沢盆地，南に蔵王金瓶（かなかめ）の火山泥流によって隔てられた上山（かみのやま）盆地があり，広義にはこれらの小盆地を含めて山形盆地といわれる。東部には蔵王山，面白（おもしろ）山(1264m)，船形山(御所山)の火山群が連なる奥羽山脈，西部には葉山，白鷹山の両火山を含む出羽山地が配列し，それぞれ山形(滝山)断層崖と鷹戸屋山断層崖によって限られた断層地溝盆地である。…

※「尾花沢盆地」について言及している用語解説の一部を掲載しています。

出典｜株式会社平凡社世界大百科事典 第２版について | 情報