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Hr-MZ Tephra Yamamoto, 2006

Abbr.: Hr-MZ

• Tephra
• Pleistocene (ca. 0.26 - 0.25 Ma, Tephra)
• Correlation: Miyazawa Pyroclastic Flow Deposit

• Lithofacies: Orthopyroxene hornblende dacite
• Lithofacies: Lapilli

• Source: Haruna volcano
• Host: Hoshakuji Loam
• Thickness: 12 cm

• Distribution: Mamiana town, Utsunomiya city, Tochigi pref.; Hoshakuji, Takanezawa city, Shioya county, Tochigi pref.

• Yoshikawa et al. (2010) Geology of the Utsunomiya District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, AIST, 79p. (in Japanese with English abstract 6p.)