Gunge Member

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Gunge Member

Invalid synonym: Ozaki Member

Type locality: Gunge - Kitayama, Awaji city, Hyogo prefecture
Coherent formation
Pliocene - Pleistocene
Interfingered (Tsushi Member)
Correlation: Ogura Member

Sedimentary facies: Fluvial, Lacustrine
Paleo-river system: Same river as Ogura Member
Lithofacies: Sands, Gravels
Lithofacies (Minor): Silt, Clay
Sedimentary structures: Trough cross-stratification

Thickness: 40 - 150 m
Upper limit: Interfingered (Takedani Member)
Lower limit: Conformity (Aihara Member), Unconformity (Granites)

Atago Formation
[ Upper ]
~~~~~~~~~~~~~~
Takedani Member
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Gunge Member / Tsushi Member
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Aihara Member
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Inohana Member
~~~~~~~~~~~~~~
[ Lower ]

Osaka Group (central Awajishima, Hyogo pref.)
[ Upper ]
~~~~~~~~~~~~~~
Goshikihama Formation
--------------
Atago Formation
~~~~~~~~~~~~~~
[ Lower ]

Second Setouchi Supergroup (Osaka pref. - Hyogo pref.)
[ Upper ]
~~~~~~~~~~~~~~
Osaka Group
~~~~~~~~~~~~~~
[ Lower ]

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

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

Distribution: Gunge - Kitayama - Ei - Yanagisawa - Otani - Shizuki - Nakada - Kisoshimo, Awaji city, Hyogo pref.
Tephra: Kenjogaoka 1, Kenjogaoka 2, Kenjogaoka 3, Kenjogaoka 4

Takahashi et al. (1992) Geology of the Sumoto District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 107p. (in Japanese with English abstract 5p.)
Mizuno et al. (1990) Geology of the Akashi District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 90p. (in Japanese with English abstract 5p.)