Maisawa Terrace Deposit

[ Top ] [ Japanese ]

Maisawa Terrace Deposit (Oike et al., 1966) Tuzino et al., 2018

Type locality: Mabechi river, Maisawa, Ninohe city, Iwate prefecture
Mabechi river system
Coherent formation
late Pleistocene - Holocene (15.5 - 9.2 ka)

Sedimentary facies: Fluvial
Lithofacies: Gravels, Sands, Silt, Lahar deposit
Sedimentary structures: Parallel stratification

Thickness: 60 cm or thicker
Upper limit: Conformity (Towada Nanbu Tephra)
Lower limit: Unconformity (Towada-Hachinohe Pyroclastic Flow Deposit, Itukamati Sandstone Member)

western Ichinohe region, Iwate pref.
[ Upper ]
+__+__+__+__+_
Horino Terrace Deposit
~~~~~~~~~~~~~~
Maisawa Terrace Deposit
~~~~~~~~~~~~~~
Towada-Hachinohe Pyroclastic Flow Deposit
~~~~~~~~~~~~~~
Towada-Ofudo Pyroclastic Flow Deposit
~~~~~~~~~~~~~~
Kusagi Terrace Deposit
~~~~~~~~~~~~~~
Asanai Terrace Deposit
~~~~~~~~~~~~~~
[ Lower ]

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

Distribution: Maisawa - Kintaichi - Hareyama, Ninohe city, Iwate pref.; Koida - Sawada, Ichinohe city, Ninohe county, Iwate pref.

Tuzino et al. (2018) Geology of the Ichinohe District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, AIST, 161p. (in Japanese with English abstract 4p.)