K-Ar age of the Kinshozan quartz diorite from the Kanto Mountains
K-Ar age of the Kinshozan quartz diorite from the Kanto Mountains
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关东山金照山石英闪长岩的K-Ar年龄
DOI：
10.2465/ganko1941.78.38
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发表时间：
1983
期刊：
影响因子：
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通讯作者：
A. Ono
中科院分区：
文献类型：
--
作者：
A. Ono
对关东东北部黑云母角闪石石英闪长岩中的角闪石进行了K-Ar定年。石英闪长岩的年龄为251±8 Ma。结合地质事实，支持了在三坝川变质带和良屋变质带之间存在由花岗质侵入岩组成的岛弧的观点。
K-Ar dating on hornblende from biotite-hornblende quartz diorite in northeastern part of the Kanto Mountains was carried out. The age of the quartz diorite is 251±8 Ma. The result, together with geological facts, supports the idea that island arc composed of granitic plutons was present between the Sanbagawa and the Ryoke metamorphic belts.