The author met with a well evolved marine-cut terrace, consisting of only one stage near the western extremity of Simané Peninsula. Along an elevated shoreline of about 7 km. length on the terrace, the author selected thirteen locations in which their original form have been preserved most perfectly. The elevation of these locations above sea level were measured by means of an aneroid altimeter with precise corrections. These benchmarks are shown in Fig. 1 with their altitudes. In order to show the value of the crustal movements compared with the declivity (tan θ) of an elevated shoreline, the author used two different methods of calculating the gradient as follows:
(1) Taking three of the next benchmarks in order and calculating the largest declivity of the plane, on which stand the three benchmarks, the author, by his method of computation (see p. 87) indicated the declivity with arrows (Fig. 1).
(2) Calculating the strike and declivity of every two available points among the thirteen benchmarks along the elevated shoreline, and plotting them on right angle coordinates, the author obtained a cosine curve (Fig. 4), which shows how much and to which side the elevated shoreline has inclined on an average.
The first method is convenient in ascertaining the character of the crustal movements in very limited localities, while the second method is suited for presuming the general trend of the crustal movement in more extensive area where there is an uninterrupted elevated shoreline.
Finally, the result of these computations enabled the writer to prove that the shoreline near Cape Hino-misaki, once formed in a horizontal position, was later so strongly transformed by crustal movement as to reach a gradient of the order of 10^-2, namely:
tg=0.59
According to G. Imamura's classification^*, the crustal movement in this district corresponds to the so-called orogenic zone type.