Abstract
The writer carried out a granulometric study of beach sediments in Hakodate Bay area, Hokkaido, to make clear the mechanism of littoral transport and direction of prevailing beach drift.
26 sampling stations were selected along the stretch of beach, and the samples were analyzed concerning the size distribution, properties of roundness and shape, and so on. There is a close connection between the direction of prevailing beach drift and the gravel content of beach sediments.
Then the writer examined the terrace deposits of Moheji marine terrace, and he surmised the direction of ancient beach drift which related to Noheji marine terrace, by the result above mentioned.
He made a comparison between the sediments of beach and Moheji terrace, and he presumed the ancient environments which made the terrace deposits.
