Calcareous nannofossil assemblages of the upper Miocene to Pliocene Shimajiri Group on Okinawa-jima, Ryukyu Islands, southwestern Japan

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• 作者：Ryo Imai^a ; ^{imai@sohken-c.co.jp} ; Tokiyuki Sato^b ; Yasufumi Iryu^c
• 关键词：Biostratigraphy ; Paleoceanography ; Calcareous nannofossil ; Miocene ; Pliocene ; Ryukyu Islands ; Shimajiri Group
• 刊名：Journal of Asian Earth Sciences
• 出版年：2017
• 出版时间：March 2017
• 年：2017
• 卷：135
• 期：Complete
• 页码：16-24
• 全文大小：3409 K
• 卷排序：135

文摘

High-resolution calcareous nannofossil biostratigraphy of the Shimajiri Group. Eutrophication was caused by shallowing of the sedimentary basin. Eutrophication occurred in the northwestern Pacific Ocean at 5 Ma.