Numanotaira Welded Pyroclastic Rocks

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Invalid synonym: Adatarasancho Lava Dome

Volcanic rocks
Eruption deposit forming Numanotaira crater
Pleistocene

Lithofacies: Calc-alkaline
Lithofacies: Augite hypersthene andesite
Lithofacies: Welded pyroclastic fall deposit
Lithofacies (Minor): Pyroclastic surge deposit
Sedimentary structures (Minor): Cross stratification

Source: Numanotaira crater
Thickness: ca. 20 m
Lower limit: Unconformity (Tainaiiwa Lava, Shojigaiwa Lava, Funamyojinyama Lava, Tetsuzan-Yahazumori products, Adatarayama Lava)

Minowasan-Adatarayama products
[ Upper ]
~~~~~~~~~~~~~~
Sukawa L1 Lahar Deposit
~~~~~~~~~~~~~~
[ Lower ]

Minowasan-Adatarayama products
[ Upper ]
+__+__+__+__+_
Numanotaira Crater Lake-fill Deposit
~~~~~~~~~~~~~~
Numanotaira Pyroclastic Cone Deposit
~~~~~~~~~~~~~~
Kagoyama Lava
~~~~~~~~~~~~~~
Yukawa Pyroclastic Flow Deposit
~~~~~~~~~~~~~~
Numanotaira Welded Pyroclastic Rocks
~~~~~~~~~~~~~~
Adatarayama Lava
~~~~~~~~~~~~~~
Seishidaira Lava
~~~~~~~~~~~~~~
Funamyojinyama Lava
~~~~~~~~~~~~~~
Tetsuzan-Yahazumori products
~~~~~~~~~~~~~~
Shojigaiwa Lava
~~~~~~~~~~~~~~
Tainaiiwa Lava
~~~~~~~~~~~~~~
Kimenzan Lava
~~~~~~~~~~~~~~
Motoyama Pyroclastic Flow Deposit
~~~~~~~~~~~~~~
Minowasan Lava
~~~~~~~~~~~~~~
Akataki Lava
~~~~~~~~~~~~~~
Iogawa Lava
~~~~~~~~~~~~~~
Shiraitonotaki Lava
~~~~~~~~~~~~~~
[ Lower ]

Adatara volcano
[ Upper ]
+__+__+__+__+_
Minowasan-Adatarayama products
~~~~~~~~~~~~~~
Oshosan products
~~~~~~~~~~~~~~
Sogodai Lava
~~~~~~~~~~~~~~
Numajiri Pyroclastic Flow Deposit
~~~~~~~~~~~~~~
[ Lower ]

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

Distribution: Numanotaira - Shojigaiwa, Inawashiro city, Yama county, Fukushima pref.; summit of Mount Adatara, Nihonmatsu city, Fukushima pref.

Sakaguchi (1995) Geology of the Nihonmatsu District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 79p. (in Japanese with English abstract 4p.)