Hatsushima volcano

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Hatsushima volcano Oikawa and Ishizuka, 2011

Invalid synonym: Hatsushima Basalt

Type locality: Hatsushima island, Atami city, Shizuoka prefecture
Volcanic rocks
Pleistocene (0.7 - 0.6 Ma, 0.3 Ma or younger, older than ca. 0.1 Ma)

Sedimentary facies: Terrestrial
Lithofacies: Tholeiite
Lithofacies: Olivine basalt, Olivine clinopyroxene basalt
Lithofacies (Minor): Orthopyroxene clinopyroxene andesite, Aphric basalt
Lithofacies: Basalt aa lava

Thickness: 3 m or thicker
Upper limit: Unconformity (Hatsushima I Terrace Deposit)

Usami-Taga volcanoes
[ Upper ]
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Hatsushima volcano
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Ajiro volcano
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Uomisaki volcano
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Atami volcano
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Osaki volcano
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Usami volcano
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Shimotaga volcano
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[ Lower ]

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

Distribution: Hatsushima island, Atami city, Shizuoka pref.

Oikawa and Ishizuka (2011) Geology of the Atami District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, AIST, 61p. (in Japanese with English abstract 3p.)