第一瀬戸内区中新統(師崎, 岩村, 富草層群)の珪藻示準化石と地質年代
第一瀬戸内区中新統(師崎, 岩村, 富草層群)の珪藻示準化石と地質年代
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濑户内第一区中新世(庄崎群、岩村群、富草群)的硅藻指数化石和地质时代
DOI:
10.5575/geosoc.105.152
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发表时间:
1999
期刊:
影响因子:
--
通讯作者:
雅夫 岩井
中科院分区:
文献类型:
--
作者:
知佳 伊藤;俊明 入月;雅夫 岩井
Diatom zonal key species are identified in the samples from the Morozaki (the Toyohama, Yamami and Utsumi Formations), Iwamura (the Toyama Formation) and Tomikusa (the Awano and Yonekawa Formations) Groups. These assemblages are characterized by the abundant occurrences of Kisseleviella carina and Stephanopyxis spp. The presence of Crucidenticula sawamurae, C. ikebei, Delphineis kamenooensis and D. miocenica, and the absence of Crucidenticula kanayae suggest that all of those samples from above groups are placed within the middle to upper part of C. sawamurae Zone (late Early Miocene).