Nawa Pyroclastic Flow Deposit

Invalid synonym: Nawa Pumice Flow Deposit

Type locality: Nawa, Daisen city, Saihaku county, Tottori prefecture
Volcanic rocks
middle Pleistocene (100 ka, FT)

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

Source: Furikosen Lava Dome
Eruptive volume: 1.3 km³ DRE
Thickness: 5 - 50 m
Upper limit: Conformity (Eolian deposit intercalating SkP)
Lower limit: Unconformity (Eolian deposit intercalating DMP, 0.13 Ma)

Young stage
[ Upper ]
+__+__+__+__+_
Volcanic fan 1 deposit
?--?--?--?--?-
Volcanic fan 2 deposit
~~~~~~~~~~~~~~
Sankoho Lava Dome / Amidagawa Pyroclastic Flow Deposit
?--?--?--?--?-
Volcanic fan 3 deposit
~~~~~~~~~~~~~~
Misen Lava Dome / Masumizuhara Pyroclastic Flow Deposit
?--?--?--?--?-
Karasugasen Lava Dome / Sasaganaru Pyroclastic Flow Deposit
--------------
Makibara Pyroclastic Flow Deposit
?--?--?--?--?-
Volcanic fan 4 deposit
?--?--?--?--?-
Furikosen Lava Dome / Nawa Pyroclastic Flow Deposit
~~~~~~~~~~~~~~
Volcanic fan 5 deposit
~~~~~~~~~~~~~~
[ Lower ]

Daisen volcano
[ Upper ]
+__+__+__+__+_
Young stage
~~~~~~~~~~~~~~
Old stage
~~~~~~~~~~~~~~
[ Lower ]

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

Distribution: Northern flank - northern 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