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Nishinagano Quartz Porphyry Dike Swarms

• Intrusive rocks
• Cretaceous
• Intruded in: Sasugawa Granodiorite, Shimokuhara Granite

• Sedimentary facies: Dikes
• Lithofacies: Quartz porphyry
• Lithofacies (Minor): Porphyrite
• Structures: Flow structure

• Distribution: Nishinagano, Iwakuni city, Yamaguchi pref.

• Higashimoto et al. (1983) Geology of the Iwakuni District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 79p. (in Japanese with English abstract 6p.)