Takashimizu Basalts

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Takashimizu Basalts

Type locality: Takashimizukogen, Tottori prefecture - Okayama prefecture
Volcanic rocks
Pliocene
Intruded in: Ningyotoge Formation

Lithofacies: Augite olivine basalt lava, Tuff breccia
Lithofacies (Minor): Basalt lapilli tuff, Tuff breccia
Sedimentary structures (Minor): Platy joints

Thickness: ca. 20 - 35 m or thicker
Thickness (Lava): 10 - 15 m
Upper limit: Interfingered (Tando Tuff Breccia)
Lower limit: Unconformity (Granite, Ningyotoge Formation)

southern Kurayoshi, Tottori pref.
[ Upper ]
~~~~~~~~~~~~~~
Nakatsugo Andesites
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Tando Tuff Breccia
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Takashimizu Basalts
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Ningyotoge Formation
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[ Lower ]

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

Distribution: Takashimizukogen, Tottori pref. - Okayama pref.; Akawase, Kagamino city, Tomata county, Okayama pref.; Tando, Misasa city, Tohaku county, Tottori pref.

Yamada (1961) Okutsu, Explanatory Text of the Geological Map of Japan, Scale 1:50,000, Geological Survey of Japan, 51p. (in Japanese with English abstract 9p.)
Murayama and Ozawa (1961) Aoya & Kurayoshi, Explanatory Text of the Geological Map of Japan, Scale 1:50,000, Geological Survey of Japan, 71p. (in Japanese with English abstract 5p.)