著者

深草団体研究会

出版者

地学団体研究会

雑誌

地球科学 (ISSN:03666611)

巻号頁・発行日

vol.1962, no.63, pp.1-9, 1962-11-30 (Released:2017-07-24)

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The loose sediments at Fukakusa, southeast Kyoto, are recognized to be the Osaka Group by discovering the Azuki-Tuff and the Pink-Tuff. The Osaka Group at this area consists of gravels, sands, silts and clays. In this group 8 cycles exist and the upper four cycles have four marine clays and the lower four cycles have non-marine clays. It is 130 m in thickness and is marginal sediments in the Kyoto Basin. The marine molluscan fossils occur mainly from the seventh cycle and the plant fossils from the first and the fourth cycles. The Kuragatani Formation and the Momoyama Gravel, unconformably overlie the Osaka Group and they may correspond to the Manchidani Formation and the Meimi Gravel (the higher terrace deposits) respectively.