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翻訳と辞書　辞書検索 [ 開発暫定版 ] スポンサード リンク Mamelon (volcanology) ： ウィキペディア英語版 Mamelon (volcanology) A mamelon (from French ''mamelon'', "nipple") is a rock formation created by eruption of relatively thick or stiff lava through a narrow vent in the bedrock. Because the lava is not fluid, it does not flow away; instead it congeals around the vent, forming a small hill or mound on the surface. The outflow from successive eruptions forms additional layers on top, and the resulting pile of layers may stand over above the surrounding surface. The term was coined by the French explorer and naturalist Jean Baptiste Bory de Saint-Vincent, to describe the central peak of the Dolomieu Crater in the Piton de la Fournaise volcano on Réunion. Hanging Rock in Australia is another example of a mamelon. ==See also== *Breast shaped hill 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Mamelon (volcanology)」の詳細全文を読む スポンサード リンク 翻訳と辞書 : 翻訳のためのインターネットリソース Copyright(C) kotoba.ne.jp 1997-2016. All Rights Reserved.