Yokonagane Lava

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Yokonagane Lava

Type locality: Yokonagane, Tazawako, Senboku city, Akita prefecture
Volcanic rocks
Pleistocene - Holocene

Lithofacies: Orthopyroxene olivine basalt

Main strato cone stage
[ Upper ]
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Yakiyama Lava
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Oyakisuna Lava
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Iwaisawa Lava
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Upper Mizusawa Lava
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Yokonagane Lava
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Kinjuronagane Lava
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Odake Lava
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Owadasawa Lava
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Hinokinaigawa Lava
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Mizusawa Lava
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Tazawakokogen Lava
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[ Lower ]

Akita-Komagatake volcano
[ Upper ]
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Post-caldera eruption stage
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Syn-caldera formation stage
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Main strato cone stage
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[ Lower ]

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

Distribution: Yokonagane - Ryukawa river, Tazawako, Senboku city, Akita pref.

Suto and Ishii (1987) Geology of the Shizukuishi District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 142p. (in Japanese with English abstract 5p.)