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Pyroclastic Rock 2

• Volcanic rocks
• late Miocene

• Sedimentary facies: Pyroclastic fall deposits
• Sedimentary facies (2a): Pyroclastic surge deposits
• Sedimentary facies (2a, Minor): Pyroclastic flow deposits, Pyroclastic fall deposits
• Lithofacies: Rhyolitic pumiceous lapilli tuff
• Lithofacies (2a): Pumiceous lapilli tuff
• Lithofacies (2b): Rhyolitic pumice tuff, Rhyolitic lapilli tuff
• Lithofacies (2b, Minor): Accretionary lapilli
• Lithofacies (2c): Pumiceous lapilli tuff
• Sedimentary structures (2a): Wave lamination
• Sedimentary structures (2a, Minor): Reversed-graded bedding

• Thickness: ca. 50 m
• Thickness (2a): ca. 1 m
• Host: Goka Rhyolite
• Host (2a): Tsuma Rhyolite, Saigo Rhyolite
• Host (2b): Saigo Rhyolite
• Host (2c): Tsuma Rhyolite
• Lower limit: Unconformity (Nishida Trachyte)

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

• Distribution: Kitagata - Omosu bay - Cape Mimizaki - Yobaseguri - Nishida, Okinoshima city, Oki county, Shimane pref.
• Distribution (2a): Nishizato - Nakazato - Senjigawa river - Utagi - Mount Kinbusan, Okinoshima city, Oki county, Shimane pref.
• Distribution (2b): Mount Atagoyama - Mont Kinbusan - Lake Oike - Lake Meike - Mount Iinoyama, Okinoshima city, Oki county, Shimane pref.
• Distribution (2c): Kamizato - Senjigawa river, Okinoshima city, Oki county, Shimane pref.

• Yamauchi et al. (2009) Geology of the Saigo District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, AIST, 118p. (in Japanese with English abstract 3p.)