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Os-Nm Tephra

Abbr.: Os-Nm

• Tephra
• Holocene

• Lithofacies: Scoria

• Source: Izu-Oshima volcano
• Host: Numa I Terrace Deposit
• Thickness: ca. 1 cm

• Distribution: Koyatsu, Tateyama city, Chiba pref.

• Kawakami and Shishikura (2006) Geology of the Tateyama District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, AIST, 82p. (in Japanese with English abstract 5p.)