Hagima Conglomerate

Hagima Conglomerate Iki, 1909

Type locality: Wada - Nishihagima, Makinohara city, Shizuoka prefecture
Coherent formation
middle Miocene - Pliocene
Contemporaneous heterotopic facies: upper Oyori Mudstone

Sedimentary facies: Marine
Sedimentary facies: Forearc basin (Sagara-Kakegawa Basin) deposit
Lithofacies: Conglomerate
Lithofacies (Minor): Sandstone

Thickness: ca. 300 - 400 m
Upper limit: Conformity (Horinouchi Alternation)
Lower limit: Conformity (Oyori, Mudstone)

Sagara Group (Western part)
[ Upper ]
--------------
Hagima Conglomerate
--------------
Oyori Mudstone
--------------
Hirugaya Alternation
--------------
Sugegaya Alternation
~~~~~~~~~~~~~~
[ Lower ]

Sagara Group (Central part)
[ Upper ]
--------------
Hiki Alternation
--------------
Ogane Mudstone
--------------
Sagara Alternation
--------------
Yokobuna Mudstone
~~~~~~~~~~~~~~
[ Lower ]

Sagara Group (Eastern part)
[ Upper ]
--------------
Omaezaki Alternation
--------------
Sagara Alternation
--------------
Susuki Mudstone
--------------
Jitogata Alternation
~~~~~~~~~~~~~~
[ Lower ]

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

Distribution: Wada - Nishihagima - Ishiharada, Makinohara city, Shizuoka pref.
Fossils: Sponges (Sagarites chitanii), Calcareous nannofossils
Fossils (Shellfishes): Amussiopecten iitomiensis, Amussiopecten praesignis, Buccinum sp., Conus sp., Glycymeris sp., Lyria cf. mizuhonica, Neptunea sp., Narona nodulifera, Siphonalia cf. declivis, Venus foveolata yokoyamai
Fossils (Foraminifera): Globigerina nepenthes, Globorotalia tumida plesiotumida, Globorotalia tumida tumida, Pulleniatina sp., Sphaeroidinella dehiscens dehiscens

Sugiyama et al. (1988) Geology of the Omaezaki District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 153p. (in Japanese with English abstract 6p.)