朝鮮海峡海底ボーリング(Tsu-Ko-1)試料から得られた花粉・胞子群集

概要

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Fifty-three sidewall samples of the boring well (Tsu-Ko-1) on the western slope of the Tsushima Trough in the Korea Strait have been examined palynologically, but only fifteen of them are available to bring remarkable pollen-spore assemblages which consist of more than one hundred and seven kinds of palynomorphs. Pollen-spore assemblage from deeper horizons than at least 802m in depth indicates a predominance of Caryapollenites simplex simplex (Carya), Periporopollenites stigmosus (Liquidambar) etc. in appearance. This is a characteristic of the Daijima type flora (Middle Miocene). This assemblage is well correlated with the pollen-spore assemblage of the Yonil Group, Korea and the Chojabaru Diatomite Formation, Iki Island. At least, horizons from less than 802m to 362.5m in depth may be the Late Miocene to Early Pliocene in age.
〔長崎大学教養部〕の論文