Mylonite

Japanese: ミロナイト

Also known as crushed rock or mylonite. A representative of dynamic metamorphic rocks. Crushed fine grains recrystallize and flow around the residual crystals that escaped crushing, and the striped structure is visible to the naked eye. It is mainly composed of quartz and feldspar, and colored minerals are decomposed by crushing. In Japan, this is known as Kashio mylonite, which develops several hundred meters wide inside the Median Tectonic Line. The one along the San Andreas Fault in the United States is also famous.
→ Related article Dynamic metamorphism

Source : Heibonsha Encyclopedia About MyPedia Information

Japanese:

圧砕岩，マイロナイトとも。動力変成岩の代表。圧砕された細粒部が再結晶して，圧砕を免れた残斑晶を取り巻いて流れたような構造を示し，肉眼的にも縞(しま)状構造を示す。石英・長石が主で，有色鉱物は圧砕作用で分解。日本では中央構造線の内側に幅数百m発達するいわゆる鹿塩(かしお)ミロナイトと呼ばれているものがこれ。米国のサン・アンドレアス断層に沿うものも有名。
→関連項目動力変成作用

出典　株式会社平凡社百科事典マイペディアについて　情報

<<: Myron (English spelling)

>>: Milos (Island)