Shobudani Group

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Shobudani Group (Kawata, 1939) Makimoto et al., 2004

Invalid synonym: Shobudani Formation

Coherent formation
Sedimentary basin associated with the activity of Median Tectonic Line
late Pliocene - middle Pleistocene (ca. 3.5 - 0.3 Ma)

Sedimentary facies: Fluvial
Lithofacies: Sands, Gravels

Thickness: 200 m or thicker
Upper limit: Unconformity (Middle Terrace Deposits)
Lower limit: Unconformity (Sanbagawa Metamorphic Rocks, Izumi Group)

Shobudani Group (Yoshino, Nara pref.)
[ Upper ]
~~~~~~~~~~~~~~
Ryumon Formation
~~~~~~~~~~~~~~
Oyodo Formation
--------------
Kosoku Formation
~~~~~~~~~~~~~~
[ Lower ]

Shobudani Group (Hashimoto, Wakayama pref.)
[ Upper ]
~~~~~~~~~~~~~~
Denoto Formation
~~~~~~~~~~~~~~
[ Lower ]

Shobudani Group (Kinokawa, Wakayama pref.)
[ Upper ]
~~~~~~~~~~~~~~
Toge Formation
--------------
Kaseda Formation
--------------
Kishigawa Formation
~~~~~~~~~~~~~~
[ Lower ]

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

Distribution: Shobutani, Hashimoto city, Wakayama pref.
Tephra: V290

Makimoto et al. (2004) Geology of the Kokawa District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, AIST, 89p. (in Japanese with English abstract 4p.)
Miyata et al. (1993) Geology of the Wakayama and Ozaki District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 68p. (in Japanese with English abstract 4p.)
Hirayama and Kambe (1959) Koyasan, Explanatory Text of the Geological Map of Japan, Scale 1:50,000, Geological Survey of Japan, 41p. (in Japanese with English abstract 7p.)
Hirayama and Kishimoto (1957) Yoshinoyama, Explanatory Text of the Geological Map of Japan, Scale 1:50,000, Geological Survey of Japan, 44p. (in Japanese with English abstract 8p.)