… Vast plateaus can be formed by explosive eruptions that eject large amounts of pumice and volcanic ash as pyroclastic flows. The Shirasu Plateau around Kagoshima Bay is a typical example, and is called a pyroclastic flow plateau. In the center of the plateau, there is usually a caldera (collapsed caldera) that collapsed after a major eruption. … *Some of the terminology that refers to "pyroclastic flow plateau" is listed below. Source | Heibonsha World Encyclopedia 2nd Edition | Information |
… 広大な台地が大量の軽石と火山灰を火砕流として噴き出す爆発的噴火によって形成されることもある。鹿児島湾の周辺に広がるシラス台地がその代表例で,これを火砕流台地pyroclastic flow plateauという。台地の中央部にはふつう,大噴火のあとに陥没してできたカルデラ(陥没カルデラ)が見られる。… ※「pyroclastic flow plateau」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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