Saruana Lava

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Saruana Lava Hayashi, 1984

Invalid synonym: Saruana Mudflow, Misaki Clastic Rocks

Stratovolcano
Volcanic rocks
Holocene (ca. 3,000 BP)

Lithofacies: Hypersthene olivine augite andesite
Lithofacies: Lava

Source: Saruana
Eruptive volume: 0.65 km³
Thickness: 60 - 140 m or thicker

Stage IIIa
[ Upper ]
~~~~~~~~~~~~~~
Saruana Lava
~~~~~~~~~~~~~~
[ Lower ]

Stage IIIa
[ Upper ]
~~~~~~~~~~~~~~
Nabemori Lava
~~~~~~~~~~~~~~
Mansukemichi Lava
~~~~~~~~~~~~~~
[ Lower ]

Stage IIIa
[ Upper ]
~~~~~~~~~~~~~~
Shichikosan Lava
~~~~~~~~~~~~~~
[ Lower ]

Stage III
[ Upper ]
+__+__+__+__+_
Stage IIIb
~~~~~~~~~~~~~~
Kisakata Debris Avalanche Deposit
~~~~~~~~~~~~~~
Stage IIIa
~~~~~~~~~~~~~~
[ Lower ]

Chokai volcano
[ Upper ]
+__+__+__+__+_
Stage III
~~~~~~~~~~~~~~
Stage II
~~~~~~~~~~~~~~
Stage I
~~~~~~~~~~~~~~
[ Lower ]

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

Distribution: Saruana, Kisakata town, Nikaho city, Akita pref.; Misaki seashore, Kosagawa - Mega, Kisakata town, Nikaho city, Akita pref.

Hayashi and Yamamoto (2008) Jour. Geol. Soc. Japan, vol.114, Supplement, pp.87-95 DOI
Nakano and Tsuchiya (1992) Geology of the Chokaisan and Fukura District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 138p. (in Japanese with English abstract 7p.)