SH-A Tephra

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SH-A Tephra

Abbr.: SH-A

Type locality: Shiramazu fishing harbour, Chikura town, Minamiboso city, Chiba prefecture
Tephra
Pliocene

Lithofacies: Vitreous volcanic ash

Host: Shirahama Formation
Thickness (Upper): 0 - 10 cm
Thickness (Middle): 60 cm
Thickness (Lower): 0 - 4 cm

SH Tephra
[ Upper ]
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SH-A Tephra
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SH-B Tephra
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SH-C Tephra
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[ Lower ]

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

Distribution: Shiramazu fishing harbour, Chikura town, Minamiboso city, Chiba pref.

Kawakami and Shishikura (2006) Geology of the Tateyama District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, AIST, 82p. (in Japanese with English abstract 5p.)