Abstract
The middle parts in Niigata Prefecture including major oil fields exists as the most remarkable area, and these oil fields mainly belongs to Bodaiji-Kamo Uplift and Kakuda-Yahiko Uplift was grown after Teradomari stage in Neogene Tertiary age.
In this paper are disscussed how have developed historicaly and structurely, and then as the conclusion for migration and accumulation of oil from these area introduced following two important points:
(1) The end of the regional migration of oil accumulated on the paleostructure to Shiiya stage.
(2) The local migration of oil are distinctly after Nishiyama stage and petroleum (or gas) finaly was trapped in the structure according to the structural movement after Uonuma stage.
