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Earth, Planets and Space
Fig. 3 | Earth, Planets and Space

Fig. 3

From: Middle Miocene forearc alkaline magmatism in Amami-Oshima Island, central Ryukyu Arc: implications for paleoreconstruction of Shikoku Basin

Fig. 3

Photomicrographs of the basaltic dikes and massive basalt. a Plane-polarized light and b, c, d cross-polarized light. a Outer margin of the basaltic dike is locally altered to chlorite (Chl). b The chert including quartz vein was cut by the basaltic dike. Location of the figure is shown in a. c Basaltic Dike 1 (NCD1-2) and d massive basalt (NC8). Pl: plagioclase, Fe–Ti oxides: Fe–Ti oxide minerals

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