第四紀造山期の3つの海進

概要

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The writer (1962) presented his suggestion, explaining that the sea level of late Miocene epoch was 2,000 meters lower than the present sea level. It is considered that the sea levels have been rised in the stages of early Pliocene epoch and early Middle Pleistocene epoch with the amount of each 1,000 meters. The former will correspond to the Kazusa (Pontion) transgression and the latter will correspond to the Byobugaura (Sicilian) transgression, respectively. At the maximum stage of the Byobugaura transgression, the sea level can be considered 100 meters higher than that of the present, and thereafter the sea level would have gradually been lowering together with the development of glacier, and finally at the maximum Wiirm stage the sea level would become 100 meters lower than that of the present. After that, following to the Yurakucho transgression, the sea level finally has arrived to the present level. The Kazusa transgression and the Byobugaura transgression are so-called tectono-eustasy and the Yurakucho transgression is namely glacial-eustasy.
地学団体研究会の論文
1975-03-20