丘

Multi tool use
 | この項目では、一般的な用法について説明しています。映画作品については「丘 (映画)」を、漢姓については「丘 (姓)」をご覧ください。
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スウィフツ・クリークを取り囲む丘(オーストラリア ビクトリア州)
丘(おか)は、その周囲より高いが、山よりは低くかつ傾斜のゆるやかな地形である。山と丘の区別は明確ではなく、この定義に当てはまる地形であっても「山」あるいは「山岳」と呼ばれる場合もある。小山(こやま)と呼ぶこともあり、その意味では広義の山に含まれることになる。
丘のように周囲より高い地形を高台(たかだい)と呼ぶ。また、多数の丘が連続して存在している所のことを丘陵(きゅうりょう)という。
成因
成因としては火山性のものは少なく、多くは断層性のものや侵食に取り残された残丘(ざんきゅう)である。
また、人工的に作られた丘も多数存在する(築山、古墳など)。
関連項目
 | ウィクショナリーに丘の項目があります。 |
 | この項目は、地形に関連した書きかけの項目です。この項目を加筆・訂正などしてくださる協力者を求めています(プロジェクト:地形/Portal:地理学)。 英語版の Geo-stub に対応するテンプレートは World-stub です。
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