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D4 Dyke

Synonym: Nakaoku D4 Dyke

• Ring dike associated with Odai caldera
• Intrusive rocks
• Miocene (15.2 Ma, K-Ar)

• Lithofacies: Composite dike
• Lithofacies: Basaltic andesite, Garnet-bearing cordierite quartz porphyry

• Width: ca. 30 m

• Distribution: Mie pref.

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