Holocene crustal movements recorded in fossil calcareous assemblages around the Cape Hane, Shikoku, Southwestern Japan

Tsukahara, Yuzuko ; Kanno, Mizuho; Goto, Akira; Fujita, Natsuko   ; Komatsu, Tetsuya  ; Maemoku, Hideaki*

Holocene crustal movements are recorded as fossil calcareous assemblages on rocky coast. It is possible to reconstruct crustal movements by summarizing these heights, structures and C ages. In this study, to clarify crustal movements, we collected calcareous assemblages and dated them using the C at Cape Hane. C ages show forming period of the lowest wave-cut-bench. However, it is difficult to determine the history of emerged events in a short cycle. To reconstruct the crustal movement history precisely, it is necessary to identify obvious multi-layer structures or discontinuous surfaces with time interval.