Sanbe Lava Dome

[ Top ] [ Japanese ]

Sanbe Lava Dome Suzuki et al., 1968

Type locality: southwestern slope of Mount Oanbesan, Sanbe town, Oda city, Shimane prefecture
Volcanic rocks
Pleistocene

Sedimentary facies: Lava dome with flat summit
Lithofacies: Hornblende biotite dacite lava

Distribution (Height): ca. 600 m or thicker
Distribution (Diameter): ca. 3 km
Distribution (Diameter, Summit): ca. 1.5 km
Upper limit: Unconformity (Taiheizan Pyroclastic Fall Deposits)

3rd stage
[ Upper ]
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Sanbe Lava Dome
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Kitanohara Lava
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Tane Pyroclastic Flow Deposits
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Sanbe Pumice Fall Deposits
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[ Lower ]

Sanbe volcano
[ Upper ]
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4th stage
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3rd stage
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2nd stage
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1st stage
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Older Sanbe stage
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[ Lower ]

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

Distribution: Mount Oanbesan - Mount Mesanbesan - Mount Magosanbesan - Mount Kosanbesan - Mount Kabutoyama - Mount Taiheizan - Tsukuenose - Tenjogahara, Sanbe town, Oda city, Shimane pref.

Hattori et al. (1983) Geology of the Sambesan District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 168p. (in Japanese with English abstract 7p.)