Nansetsu Subgroup

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Nansetsu Subgroup

Synonym: Shidara Volcanics, Horaiji Rhyolites, Nanasato Rhyolites, Miwa Rhyolites

Volcanic rocks
middle Miocene (15.0 - 13.0 Ma)

Lithofacies: Felsic - mafic volcanic rocks

Thickness: 2,000 m or thicker
Lower limit: Unconformity (Hokusetsu Subgroup)

Nansetsu Subgroup (Intrusive rocks)
[ Upper ]
?--?--?--?--?-
Central dikes
?--?--?--?--?-
Otoge Cone Sheet
?--?--?--?--?-
Shitara Sills
~~~~~~~~~~~~~~
[ Lower ]

Nansetsu Subgroup
[ Upper ]
?--?--?--?--?-
Otoge Volcanic Complex
?--?--?--?--?-
Tsugu Volcanic Rocks
?--?--?--?--?-
Shitara Igneous Complex
?--?--?--?--?-
Oro Formation
~~~~~~~~~~~~~~
[ Lower ]

Shitara Group
[ Upper ]
?--?--?--?--?-
Nansetsu Subgroup (Shitara Volcanic Rocks)
~~~~~~~~~~~~~~
Hokusetsu Subgroup
~~~~~~~~~~~~~~
[ Lower ]

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

Distribution: Shitara region, Aichi pref.

Hoshi and Ogawa (2012) Jour. Geol. Soc. Japan, vol.118, no.11, pp.748-761 DOI
Yamasaki and Ozaki (2012) Geology of the Asuke District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, AIST, 76p. (in Japanese with English abstract 4p.)
Hoshi and Saida (2009) Jour. Geol. Soc. Japan, vol.115, no.5, pp.193-205 DOI
Saito (1955) Mikawa-Ono, Explanatory Text of the Geological Map of Japan, Scale 1:50,000, Geological Survey of Japan, 36p. (in Japanese with English abstract 11p.)