Iwakokekotani Lavas

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Iwakokekotani Lavas Nakano, 1989

Type locality: Iwakokekotani valley, Arimine, Toyama city, Toyama prefecture
Volcanic rocks
Small stratovolcano
Pleistocene (0.93 Ma, K-Ar)

Lithofacies: Interbedded basalt lava and pyroclastic rocks (more than 9 flow units)

Thickness: 180 m or thicker
Thickness (A unit): 2 - 8 m
Distribution (Diameter): ca. 2 km
Distribution (Height): ca. 300 - 400 m
Upper limit: Unconformity (Kumonotaira Lava)
Lower limit: Unconformity (Jinzu Group?)

Kumonotaira volcano
[ Upper ]
~~~~~~~~~~~~~~
Kumonotaira Lava
~~~~~~~~~~~~~~
Jiidakejobu Agglutinate
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Jiidake Lava
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Jiidakekabu Agglutinate
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Kumonotaira Gravel Bed
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Iwakokekotani Lavas
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[ Lower ]

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

Distribution: Iwakokekotani valley - Kumonotaira, Arimine, Toyama city, Toyama pref.

Harayama et al. (1991) Geology of the Yarigatake District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 190p. (in Japanese with English abstract 8p.)