...In addition, in 1960, Hisashi Kuno (1910-69) proposed high-alumina basalt magma as the primary magma, and claimed that high-alumina basalt series volcanic rocks were generated from it. Later, A.E.J. Engel et al. discovered abyssal tholeiito, which erupts from the mid-ocean ridge and spreads across the entire ocean floor, and revealed that it is poorer in K2O than normal tholeiito. Deep-sea tholeiito is the most abundant volcanic rock on Earth. ... *Some of the terminology explanations that mention "abyssal tholeiito" are listed below. Source | Heibonsha World Encyclopedia 2nd Edition | Information |
…そのほか1960年に久野久(1910‐69)は本源マグマとして高アルミナ玄武岩マグマを提唱し,これから高アルミナ玄武岩系列の火山岩が生ずると主張した。その後,中央海嶺から噴き出し大洋底全体に広がる深海性ソレアイトabyssal tholeiitoがエンゲルA.E.J.Engelらによって発見され,通常のソレアイトにくらべてK2Oに乏しいことも明らかにされた。深海性ソレアイトは地球上に最も大量に出現する火山岩である。… ※「abyssal tholeiito」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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