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土岐花崗岩の割れ目は過去の高温流体の痕跡か?

Is a fracture in Toki granite a trace of high temperature fluid in the past?

野原 壯   ; 土屋 範芳*

Nohara, Tsuyoshi; Tsuchiya, Noriyoshi*

瑞浪超深地層研究所の既存のボーリングコアを用いて、土岐花崗岩における高温流体の痕跡を調べた。その結果、2次的に形成された黒雲母と、石英による空隙の充填が認められた。これらの充填鉱物は、高温流体の痕跡と考えられる。

A trace of a high-temperature fluid in the Toki granite is investigated using pre-existing boring core of MIU. Fractures filled with secondary formed biotite and pores filled with quarts are recognized. It is considered that these filling minerals are traces of a high-temperature fluid in the past.

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