[ Top ] [ Japanese ]

Makibara Pyroclastic Flow Deposit Tsukui, 1984

Makibara Pyroclastic Flow Deposit Arakawa, 1984

• Type locality: Makibara, Daisen city, Saihaku county, Tottori prefecture
• Volcanic rocks
• middle Pleistocene (41 ka cal yBP, ¹⁴C)
• Contemporaneous heterotopic facies: Kamogaoka Tephra

• Sedimentary facies: Pyroclastic flow deposit
• Lithofacies: Biotite-bearing orthopyroxene-hornblende dacite
• Lithofacies: Block-and-ash flow deposit
• Sedimentary structures: Unclear lamination, Reversed graded bedding

• Eruptive volume: 0.19 km³ DRE
• Thickness: ca. 5 - 20 m
• Upper limit: Conformity (Eolian deposit intercalating AT tephra), Unconformity (Volcanic fan 3 deposit)

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

• Distribution: 200 m - 650 m above sea level of western slope, Mount Daisen, Tottori pref.
• Distribution: Nawa, Daisen city, Saihaku county, Tottori pref.

• Yamamoto (2017) Bull. Geol. Surv. Japan, vol.68, no.1, pp.1-16 DOI
• Sawada et al. (2009) Jour. Geol. Soc. Japan, vol.115, Supplement, pp.51-70 DOI