Upper Cretaceous depositional environments and bivalve assemblages of far-east Asia: the Himenoura Group, Kyushu, Japan

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• 作者：Toshifumi Komatsu ; Maiko Ono ; Hajime Naruse ; Taro Kumagae
• 关键词：Bivalves assemblage ; Depositional environments ; Himenoura Group ; Japan ; Paleoecology ; Upper Cretaceous
• 刊名：Cretaceous Research
• 出版年：2008
• 出版时间：June 2008
• 年：2008
• 卷：29
• 期：3
• 页码：489-508
• 全文大小：8321 K

文摘

The depositional environments and bivalve assemblages are determined for the Upper Cretaceous Hinoshima Formation of the Himenoura Group, Kamishima, Amakusa Islands, Kyushu, Japan. The Hinoshima Formation is characterized by a thick transgressive succession that varies from incised-valley-fill deposits to submarine slope deposits with high aggradation rates of depositional systems. The incised valley is filled with fluvial, bayhead delta, brackish-water estuary, and marine embayment deposits, and is overlain by thick slope deposits.