In-KTa Tephra

In-KTa Tephra Suzuki, 2001

Abbr.: In-KTa

Invalid synonym: Iz-KTa, Nasuno Tephra

Tephra
Pleistocene (0.16 - 0.14 Ma)

Lithofacies: Cummingtonite-bearing volcanic ash, Lapilli

Source: Iizuna volcano
Host: Higher II Terrace Deposit (Kawamata)
Mode of eruption: Plinian
Thickness: 12 - 14 cm

In-KT Tephra Group
[ Upper ]
--------------
In-KTa
--------------
In-KTb
--------------
In-KTc
--------------
[ Lower ]

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

Distribution: Niigata pref.

Ito et al. (2022) Geology of the Kiryu and Ashikaga District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, AIST, 101p. (in Japanese with English abstract 4p.)
Kubo et al. (2015) Geology of the Kawamata District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, AIST, 86p. (in Japanese with English abstract 4p.)