Jimmuji Volcaniclastics and Mudstone Member

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Jimmuji Volcaniclastics and Mudstone Member

Type locality: Zushi junior highschool, Ikego, Zushi city, Kanagawa prefecture
Volcanic rocks
Pliocene
Contemporaneous heterotopic facies: Takatoriyama Volcaniclastics Member

Sedimentary facies: Marine
Sedimentary facies: Submarine landslide deposit (Zushi Formation-origin)
Lithofacies: Tuffaceous sandstone, Pumice tuff, Scoria tuff, Mudstone

Thickness: 0 - 60 m
Lower limit: Fault (Zushi Formation)

Ikego Formation
[ Upper ]
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Takatoriyama Volcaniclastics Member / Jimmuji Volcaniclastics and Mudstone Member
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[ Lower ]

Miura Group (Northern Miura peninsula)
[ Upper ]
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Ikego Formation
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Zushi Formation
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[ Lower ]

Mineoka Belt (Miura peninsula)
[ Upper ]
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Miura Group
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Hayama Group
?--?--?--?--?-
[ Lower ]

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

Distribution: Ikego, Zushi city, Kanagawa pref.
Fossils (Chimostynthetic community / Cold seep community): Akebiconcha nipponica, Calyptogena sp., Conchocele disjuncta, Fusitriton sp., Lucinoma spectabile, Neptunea sp.

Eto et al. (1998) Geology of the Yokosuka District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 128p. (in Japanese with English abstract 3p.)