Figure 5
From: The Quaternary Kurobegawa Granite: an example of a deeply dissected resurgent pluton
Photomicrographs of the Kurobegawa Granite (a–c) and a ~ 10 Ma granite (d) taken in cross-polarized light. (a) Typical porphyritic textures with micro crystals of quartz, plagioclase and biotite at the northwestern margin of the granite at Loc. KRB16. (b) Groundmass quartz shows a strong dynamic recrystallization and fracturing of a large plagioclase phenocryst near the Jiigatake Volcanics at Loc. KRB30. Many xenocrystic zircons were identified in this sample. (c) Groundmass quartz shows a weak dynamic recrystallization, and a quartz phenocryst shows dissolution at the south of the granite at Loc. KRB27. (d) Equigranular granite showing indications of neither tectonic shear nor fluid migration located to the west of the northern Kurobegawa Granite at Loc. KRB23. Qz quartz, Pl plagioclase, Bt biotite, Kfs potassium feldspar.
