On-Pm3 Tephra

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On-Pm3 Tephra

Abbr.: On-Pm3, TtP

Invalid synonym: Pm-III, Pm-3D, Pm-3E, Pm-3F, Pm-3G

Tephra
Pleistocene (ca. 40 FT)

Lithofacies: Volcanic ash, Pumice

Source: Mamahahadake volcano group
Host: Kakamigahara Terrace Deposits, Atsuta Formation

Mamahahadake volcano group (Younger Ontake Tephra Group
[ Upper ]
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On-Fk
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On-Pm3
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On-Pm3'
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On-Pm2'
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On-Pm2
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On-Pm1
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On-Pm1'
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[ Lower ]

Younger Ontake Volcanic Rocks
[ Upper ]
~~~~~~~~~~~~~~
Marishiten volcano group
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Takigoshi Formation
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Mamahahadake volcano group
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[ Lower ]

Ontake volcano
[ Upper ]
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Younger Ontake Volcanic Rocks
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Older Ontake Volcanic Rocks
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[ Lower ]

------ Conformity, ~~~~~~ Unconformity, ~~~--- Local unconformity, '''/,, Interfingered, :::::: Fault, /--/-- Thrust, +__+__ Ground surface, ?--?-- Unknown

Distribution: Nagano pref.; Mitsuike town, Kakamigahara city, Gifu pref.

Yoshida and Wakita (1999) Geology of the Gifu District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 71p. (in Japanese with English abstract 4p.)
Yoshida et al. (1991) Geology of the Kuwana District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 154p. (in Japanese with English abstract 5p.)
Yamada and Kobayashi (1988) Geology of the Ontakesan District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 136p. (in Japanese with English abstract 9p.)
Sakamoto et al. (1984) Geology of the Nagoya-Hokubu District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 64p. (in Japanese with English abstract 3p.)