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HM Tephra Tamura et al., 2019

Abbr.: HM

• Type locality: Hamakatsuura fishing harbor, Katsuura city, Chiba prefecture
• Tephra
• Pleistocene

• Lithofacies: Tuff

• Host: Katsuura Formation
• Thickness: 10 cm

• Distribution: Hamakatsuura fishing harbor, Katsuura city, Chiba pref.

• Tamura et al. (2019) Jour. Geol. Soc. Japan, vol.125, no.1, pp.23-39 DOI