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Utsunoya Sheet

• Accretionary complex
• Deposition (Limestone): middle Eocene - early Oligocene
• Deposition (Chert): Oligocene - early Miocene
• Deposition (Basalt): Eocene, early Miocene
• Deposition (Mudstone): early Miocene
• Accretion: ealy Miocene (20 Ma)

• Sedimentary facies: Marine
• Sedimentary facies: Oceanic plate accreted to trench slope at the continental side, Trench-fill deposit
• Lithofacies (Upper): Interbedded sandstone and mudstone, Mudstone
• Lithofacies (Upper, Minor): Tuffaceous siliceous shale, Acidic tuff
• Lithofacies (Middle): Limestone, Chert
• Lithofacies (Lower): Basalt lava, Calcareous tuffaceous limestone
• Exotic blocks (Upper, Crusts): Basalt lava, Micritic limestone, Chert

• Distribution (Length): ca. 28 km

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

• Distribution: Hirano - Yokoyama - Utsunoya, Aoi ward, shizuoka city, Shizuoka pref.; Okabe, Okabe town, Fujieda city, Shizuoka pref.
• Fossils (Radiolarians): Actinomma? sp., Eucyrtidium diaphanes, Prunopyle cf. titan, Spongodiscus spp., Spngurus spp., Spumellaria, Stylosphaera? sp.
• Fossils (Limestone): Discocyclina sp., Foraminifera, Calcareous nannofossils
• Fossils (Chert, Radiolarians): Prunopyle titan

• Ozaki and Sugiyama (2018) Geology of the Minobu District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, AIST, 169p. (in Japanese with English abstract 7p.)
• Sugiyama and Matsuda (2014) Geology of the Nanbu District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, AIST, 134p. (in Japanese with English abstract 5p.)
• Sugiyama and Shimokawa (1990) Geology of the Shimizu District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 103p. (in Japanese with English abstract 8p.)