Abstract

To the east of Shinjo City, 100 m. a. s. l., Mt. Mokuzo (1, 027 m) is situated. A road cutting of ridge at 460 m. a. s. l. shows a reversion of ancient ravine to the present ridge. The age of chips of wood contained in the ancient valley fill is >33, 000 yrs. B.P. (Gak-2485).Another sample shows that certain part of the terrace deposits in the Shinjo basin is 29, 4OO±2, 300 1, 800yrs. B. P. (Gak-2377).

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