Hiuchiwan Unit

Accretionary complex
Deposition (Limestone): middle Carboniferous, early Permian (Fusulinids)
Deposition (Chert): late Carboniferous - early Permian, Triassic (Radiolarians)
Deposition (Sandstone): Early Jurassic (Radiolarians)
Deposition (Shale): Late Triassic, Early Jurassic (Radiolarians)
Accretion: Jurassic - Early Cretaceous
Correlation: Shuzan Complex, Kowaki Complex, Fujioka Complex, Jonan Complex Yamaga Complex, Tano Complex, upper Mimata Complex, upper Minoo Complex

Sedimentary facies: Marine
Lithofacies (Upper): Mélange facies
Matrix (Upper): Shale
Exotic blocks (Upper, Crusts): Sandstone, Limestone, Chert, Greenstones, Acidic tuff
Lithofacies (Middle): Chert
Lithofacies (Lower): Lava, Hyaloclastite
Lithofacies (Lower, Minor): Sandstone, Shale

Tamba Belt (Kyoto pref. - Hyogo pref.)
[ Upper ]
/--/--/--/--/-
Hiuchiwan Unit
/--/--/--/--/-
Shinmito Unit
/--/--/--/--/-
Koganegadake Unit
/--/--/--/--/-
[ Lower ]

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

Distribution: Hiuchiwan - Tsubaichi - Fujiokaoku - Okumo, Tambasasayama city, Kyoto pref.; Tsuji, Kuchihatta, Kyotamba city, Funai county, Kyoto pref.; Kannon pass - Kumazaki - Takei - Uchibayashimachi - Nakayama pass, Sonobe town, Nantan city, Kyoto pref.
Fossils (Limestone, Corals): Dibunophyllum omorii, Stylidophyllum sp.
Fossils (Limestone, Fusulinids): Fusulinella itoi, Fusulinella matsushitai, Paraschwagerina (Acervoschwagerina) sp., Pseudofusulina cf. santyuensis, Triticites sonobensis, Triticites sonobensis minimus
Fossils (Radiolarians): Archicapsa aff. pachiderma, Canoptum lubricum, Canoptum triassicum, Dictyomitrella? sp., Eucyrtis? sp., Parahsuum ovale, Parahsuum simplum, Paronaella? sp., Pseudoalbillella bulbosa, Pseudoalbaillella simplex, Pseudoalbaillella u-forma, Sarla? sp., Squinabolella spp., Triassocampe nova

Kurimoto et al. (1993) Geology of the Sasayama District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 93p. (in Japanese with English abstract 5p.)
Imoto et al. (1991) Geology of the Sonobe District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 68p. (in Japanese with English abstract 4p.)