Kazawa Lignite Member

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Kazawa Lignite Member

Coherent formation
Pliocene

Sedimentary facies: Terrestrial
Lithofacies (Upper): Sandstone
Lithofacies (Upper, Minor): Interbedded tuffaceous siltstone and sandstone, Lignite
Lithofacies (Lower): Interbedded tuffaceous sandstone and tuffaceous mudstone, Interbedded tuffaceous sandstone and siltstone
Lithofacies (Lower, Minor): Tuff, Lignite, Lignite-bearing shale
Sedimentary structures (Sandstone): Cross stratification

Thickness (Upper): 20 m or thicker
Thickness (Lower): 30 - 40 m
Lower limit: Unconformity (Tatsunokuchi Formation, Toyoma Formation, Ishikoshi Andesite)

Kazawa Formation (Kazawa, Iwate pref.)
[ Upper ]
~~~~~~~~~~~~~~
Gobuta Tuff Member
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Kazawa Lignite Member
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Iikura Conglomerate Member
~~~~~~~~~~~~~~
[ Lower ]

Sendai Group (Shizugawa, Miyagi pref.)
[ Upper ]
~~~~~~~~~~~~~~
Mataki Formation
--------------
Kazawa Formation
--------------
Tatsunokuchi Formation
-------'''/,,,
Kameoka Formation
~~~~~~~~~~~~~~
[ Lower ]

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

Distribution: Hanaizumi town, Ichinoseki city, Iwate pref.

Matsuno (1967) Geology of the Wakayanagi District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 24p. (in Japanese with English abstract 5p.)