富山県射水平野の第四紀の地下地質

抄録

Imizu plain is situatud in the north of Central Japan. Subsurface geology in this plain has been only partly known although there occurrs natural gas. The result of detailed examination of the well data in this plain is as fodlows.
Alluvial deposits: peat
alternation of sand and clay
conglomerate
total thickness: 0∼85m
Dilluvial deposits: sand and mud alternation intercalating
some conglomerate
conglomerate
total thickness: 20∼100
The deposits in this plain are not marine fine deposits as Kanto basin but non-marine sand and conglomerate, and become thicker towards the Hojyozu Lagoon.