[ Top ] [ Japanese ]
Honokubo Formation Ida, 1945
- Coherent formation
- Trough basin-fill deposit at the collision boundary between Izu-Bonin-Mariana arc and Southwest - East Japan island arc
- Back-arc basin volcanic activity at the back-arc basin of Izu-Bonin-Mariana arc
- late Miocene - Pliocene
- Sedimentary facies: Marine
- Lithofacies: Mudstone
- Lithofacies (Minor): Sandstone
------ Conformity, ~~~~~~ Unconformity, ~~~--- Local unconformity, '''/,, Interfingered, :::::: Fault, /--/-- Thrust, +__+__ Ground surface, ?--?-- Unknown
- Distribution: Shizuoka pref.
- Fossils (Foraminifera): Globigerina bulloides, Globigerina nepenthes, Globigerinita glutinata, Globigerinoides immaturus, Globigerinoides obliquus obliquus, Globigerinoides sacculifer, Globigerinoides trilobus, Globoquadrina altispira, Globoquadrina dehiscens dehiscens, Globoquadrina venezuelana, Globorotalia menardii, Globorotalia merolumida, Globorotalia tumida plesiotumida, Neogloboquadrina acostaensis, Orbulina sluralis, Orbulina universa, Sphaeroidinellopsis seminulina, Sphaeroidinellopsis subdehiscens
- Sugiyama and Shimokawa (1990) Geology of the Shimizu District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 103p. (in Japanese with English abstract 8p.)