...It consists of a nearly horizontal, flat surface (terrace surface) and a steep cliff (terrace cliff) in front of or behind it. It refers to a terrain similar to that of a plateau, but the latter is used as the opposite of a lowland, and does not depend on the strata or geology that make up the stepped, flat terrain. Whereas a terrace refers to a flat surface that formed underwater in relation to a past water surface (rivers, seas, lakes, etc.) and then rose above the water, it is classified as a river terrace, coastal terrace, lacustrine terrace, etc. Therefore, it is called a lava plateau, but not a lava terrace. *Some of the terminology that mentions "lacustrine terrace" is listed below. Source | Heibonsha World Encyclopedia 2nd Edition | Information |
…ほぼ水平で平たんな地表面(段丘面)とその前方あるいは背後の急傾斜な崖(段丘崖)からなる。〈台地〉とほぼ同様な地形をさすが,台地が〈低地〉に対立する語として用いられ,その階段状の平たんな地形を構成する地層や地質のいかんによらないのに対して,段丘は過去の水面(河川,海,湖など)に関連して水中で形成された平たん面がその後に離水した地形をさし,河岸段丘,海岸段丘,湖岸段丘lacustrine terraceなどに区分される。したがって溶岩台地とはいうが,溶岩段丘とはいわない。… ※「lacustrine terrace」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 |
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