Surface and Subsurface Deformation of Ground in Sendai and Its Vicinity

Sendai and its vicinity consists of two physiographical elements, lowland and upland ""While the lowland is a coastal plain in a gentle eastward slope to the simple, almost straight Pacific shore, the upland is an uplifted platform, 300-100m. high, terraced on the surface and covered by Aobayama gravels. The boundary between the upland and lowland which runs almost parallel to the shore line is rather abrupt, and the abruptness is only slightly weakened by a, series of several narrow terraces in different height, cut and built along the border of the upland, and the valleys incised into it; the younger terraces, usually gravel-covered are called Ojojihara, Nanakita, Natori, Hirose and Yoshida terraces, and the first terrace is approximately correlated to the older Musashino terrace (Ml) of the Kwanto region, the second, the third and the fourth, and the iifth to its younger Musashino (M2), older Post-loam (PL1) and younger Post-loam. (PL2) terraces respectively