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The Ryukyu Islands are situated southwest of mainland Japan, and extend about 1,200km between Taiwan and Kyushu. The zonal structure and the main geomorphological units in the adjacent area of the Ryukyu Islands are as follows (from west to east): Tunghai Shelf on the East China Sea, Okinawa Trough (max imum depth: about 2,200m), Quaternary vol canic front, Ryukyu Geoanticline (correspond ing to the main parts of the Ryukyu Islands), and Ryukyu Trench (maximum depth : 7,881m) on the Philippine Sea. The Ryukyu Islands are divided into three groups (the North, the Central and the South Ryukyus) by two major left-lateral strike-slip faults: the Tokara Chan nel and the Kerama Gap (or Miyako Depres sion) (KONISHI, 1965). Pleistocene Ryukyu Limestone occurs throughout the Ryukyus southwest of Tokara Channel with different height, fringed by the Holocene coral reefs on some islands (e.g. OTA and HORS, 1980). Recent coral reefs in the Ryukyus show a fringing reef type except in the areas off the Yaeyama Islands (the South Ryukyus) and off Kume Island (the Central Ryukyus), where small-scale barrier reefs 10 to 20m deep are developed. The Holocene sea-level stands in the entire Ryukyus have been discussed by PIRAZZOLI (1978), OTA and HORS (1980) and KOBA et al. (1982), men tioning that, in general, the Holocene sea-level stands in the South Ryukyus are lower than those in the North and the Central Ryukyus. This paper deals with the Holocene sea-level records in Kuro, Kohama and Hateruma Islands, the South Ryukyus, based on the survey of marine notches, beachrock, coral fossils and intertidal barnacles. In addition, large boulders on Hateruma Island are dis cussed in relation to tsunami. Elevations, measured by hand-levels in relation to the pre

Late Holocene Coastal Morphology and Sea-level Records on Three Small Islands, the South Ryukyus, Japan