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D1 dike

Synonym: Nakaoku D1 Dyke

• Volcanic vent of Omine-Odai caldera
• Ring dike associated with Omine-Odai caldera
• Intrusive rocks
• Miocene (16.0, 14.7 Ma, FT)

• Sedimentary facies: Arc-shaped pyroclastic dike
• Lithofacies: Tuffite, Tuff

• Width: ca. 30 - 40 m

• Distribution: Hibora valley, Nakaoku, Kawakami city, Yoshino county, Nara pref.

• Yamashita et al. (2007) Jour. Geol. Soc. Japan, vol.113, no.7, pp.340-352 DOI