Nunobikiyama Alternation Member

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Nunobikiyama Alternation Member (Ikebe, 1934) Nakano et al., 2003

Invalid synonym: Nunobikiyama Sands and Gravels Member

Type locality: Mount Nunobikiyama, Higashiomi city, Shiga prefecture
Coherent formation
Pliocene - Pleistocene

Sedimentary facies: Terrestrial
Lithofacies: Sands
Lithofacies (Minor): Silt, Clays

Thickness: ca. 70 - 180 m or thicker
Upper limit: Conformity (Hazama Clays Member)
Lower limit: Conformity (Koka Formation, Kosaji-Iwamuro Clays Member)

Gamo Formation (east Biwako, Shiga pref.)
[ Upper ]
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Sakuradani Sands and Clays Member
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Hino Clays Member
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Nunobikiyama Alternation Member
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[ Lower ]

Gamo Formation (Minakuchi hills, Shiga pref.)
[ Upper ]
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Kasuga Alternation Member
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Hino Clays Member
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Nunobikiyama Alternation Member
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[ Lower ]

Kobiwako Group
[ Upper ]
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Takashima Formation
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Katata Formation
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Kusatsu Formation
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Gamo Formation
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Koka Formation
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Ayama Formation
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Iga Formation
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Ueno Formation
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[ Lower ]

Second Setouchi Supergroup (Shiga pref.)
[ Upper ]
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Kobiwako Group
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[ Lower ]

[ Upper ]
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Second Setouchi Supergroup
?--?--?--?--?-
First Setouchi Supergroup
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[ Lower ]

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

Distribution: Kibukawa - Mushono - Kitanaiki, Minakuchi town, Koka city, Shiga pref.; Kosaji, Koka city, Shiga pref.; Mount Nunobikiyama, Higashiomi city, Shiga pref.
Tephra: Minamihizusa, Kaigake, Hazama, Komazuki, Mushono

Nakano et al. (2003) Geology of the Minakuchi District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, AIST, 83p. (in Japanese with English abstract 3p.)
Ishida et al. (1984) Geology of the Hikone-Seibu District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 121p. (in Japanese with English abstract 6p.)