Haruki Mudstone Member

[ Top ] [ Japanese ]

Haruki Formation Wadatsumi and Matsumoto, 1958

Type locality: Hyogo prefecture
Coherent formation
Teragi Caldera
Pliocene
Contemporaneous heterotopic facies: Utanaga Rhyolite Member

Sedimentary facies: Lacustrine
Climate: Warm
Lithofacies: Mudstone
Lithofacies (Minor): Sandstone, Andesite lava, Tuff, Pumice tuff

Thickness: 120 m
Upper limit: Partly interfingered conformity (Terada Andesite Member)
Lower limit: Conformity (Yudani Conglomerate Member)

Teragi Group
[ Upper ]
~~~~~~~~~~~~~~
Terada Andesite Member
'''''''/,,,,,,
Haruki Mudstone Member
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Yudani Conglomerate Member / Kayano Tuffaceous Sandstone and Conglomerate Member
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Utaosa Rhyolite Member
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Basal conglomerate
~~~~~~~~~~~~~~
[ Lower ]

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

Distribution: Teragi - Umigami, Shinonsen city, Mikata county, Hyogo pref.
Fossils (Insects): family Asilidae, Camponotiss sp., order Diptera, order Hymenoptera, family Philodrominae, order Plecoptera
Fossils (Plants): Acer sp., Alnus sp., Betula spp., Carpinus subedoensis, Castanea sp., Fagus cf. crenata, Liquidambar sp., Metasequoia disticha, Ulmus sp., Wistaria sp.

Sakiyama et al. (2012) Jour. Geol. Soc. Japan, vol.118, Supplement, pp.1-20 DOI
Utada (2008) Jour. Geol. Soc. Japan, vol.114, no.5, pp.231-245 DOI
Uemura et al. (1979) Geology of the Wakasa District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 91p. (in Japanese with English abstract 8p.)