Toge Sandstone Member

Toge Sandstone Member Uchimura et al., 2007

Invalid synonym: middle Oura Member, Higashiyae Formation

Type locality: Iriki pass, Koriyama town, Kagoshima city, Kagoshima prefecture
Coherent formation
Pliocene
Intruded by: Nasubida Andesites

Sedimentary facies: Lacustrine
Lithofacies (Upper): Tuffaceous sandstone-dominant interbedded sandstone and mudstone
Lithofacies (Lower): Interbedded tuffaceous sandstone and mudstone
Sedimentary structures: Slump structures

Thickness: ca. 50 - 90 m
Upper limit: Transitional (Yuya Mudstone Member), Conformity (Hanao Tuff Breccia Member), , Unconformity (Raku Andesite, Kakuto Pyroclastic Flow Deposit)
Lower limit: Transitional (Atsuchi Mudstone Member), Abut unconformity (Kiyoura Andesite)

Koriyama Formation
[ Upper ]
~~~~~~~~~~~~~~
Hanao Tuff Breccia Member
--------------
Yuya Mudstone Member
--------------
Toge Sandstone Member
--------------
Atsuchi Mudstone Member
~~~~~~~~~~~~~~
[ Lower ]

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

Distribution: Hanao - Kannomaru - Ohira, Koriyama town, Kagoshima city, Kagoshima pref.; Hiwaki river, Kiyoura - Uchinoo, Iriki town, Satsumasendai city, Kagoshima pref.; Matsubae, Shirao, Gamo town, Aira city, Kagoshima pref.
Fossils: Fagus sp., Insects (Periodidae gen. et sp. indet)
Fossils (Diatoms): Stephanodiscus astraea, Cyclotella comta

Uchimura et al. (2007) Jour. Geol. Soc. Japan, vol.113, no.3, pp.95-112 DOI