Terada Andesite Member

Terada Andesite Member Wadatsumi and Matsumoto, 1958

Invalid synonym: Torigoe Pyroclastic Member

Volcanic rocks
Teragi Caldera
Pliocene
Intruded by: Rhyolite dikes

Sedimentary facies: Terrestrial
Lithofacies: Andesite lava, Tuff breccia, Rhyolitic lava
Lithofacies: Olivine basalt lava, Dacite lava, Dacitic volcaniclastic rocks
Lithofacies (Minor): Lapilli tuff, Tuff, Tuffaceous sandstone
Sedimentary structures (Lava): Platy joints

Source: in the vicinity of Higashiinaba forest road
Thickness: 500 - 800 m
Upper limit: Unconformity (Oginosen Volcanic Rocks, Inabayama Basalt, Suganosen Andesite)
Lower limit: Partly interfingered conformity (Haruki Mudstone Member), Conformity (Yudani Conglomerate Member)

Teragi Group
[ Upper ]
~~~~~~~~~~~~~~
Terada Andesite Member
'''''''/,,,,,,
Haruki Mudstone Member
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Yudani Conglomerate Member / Kayano Tuffaceous Sandstone and Conglomerate Member
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Utaosa Rhyolite Member
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Basal conglomerate
~~~~~~~~~~~~~~
[ Lower ]

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

Distribution: Teragi - Kishidagawa river - Higashiinaba forest road - Hizenbata, Shinonsen city, Mikata county, Hyogo pref.; Ojirodani, Kami city, Mikata county, Hyogo pref.; Himeji - Mount Oginosen, Yazu city, Yazu county, Tottori pref.; Mount Jinbachiyama - Kuruminogawa river - Hosomigawa river, Wakasa city, Yazu county, Tottori pref.; Waji - Ogdaki fall, Tottori city, Tottori pref.

Utada (2008) Jour. Geol. Soc. Japan, vol.114, no.5, pp.231-245 DOI
Uemura et al. (1979) Geology of the Wakasa District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 91p. (in Japanese with English abstract 8p.)