Kanmurigawa Lava

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Kanmurigawa Lava Tsunozu Research Group, 1983

Invalid synonym: Senyama Lava, Nishida Lava

Type locality: Kanmurigawa river, Nima town, Oda city, Shimane prefecture
Volcanic rocks
Pleistocene (1.18, 1.14, 0.86 Ma, FT)
Interfingered: Tsunozu Formation

Lithofacies: Hornblende quartz-bearing biotite dacite lavaLava
Structures: Colomnar joints, Platy joints

Thickness: 60 - 120 m
Upper limit: Conformity (Oe Ash Flow Deposits), Unconformity ((Tsunozu Formation, Senyama Volcanic Products, Yataki Ash Flow Deposits, Oe-Takayama Lava)
Lower limit: Conformity (Kojidani Volcanic Products)

Oe-Takayama Volcanic Products
[ Upper ]
~~~~~~~~~~~~~~
Oe-Takayama Lava
--------------
Senyama Volcanic Products
--------------
Mikusu Block-and-Ash Flow Deposits
--------------
Yataki Ash Flow Deposits
--------------
Kawakami Block-and-Ash Flow Deposits
--------------
Kakida Ash Flow Deposits
--------------
Oe Ash Flow Deposits
--------------
Kanmurigawa Lava
--------------
Kojidani Volcanic Products
~~~~~~~~~~~~~~
[ Lower ]

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

Distribution: Kanmurigawa river - Kojidani - Tsukuebara - Gorozaka - Mikusu, Oda city, Shimane pref.

Kano et al. (2001) Geology of the Yunotsu and Gotsu District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 129p. (in Japanese with English abstract 5p.)