Late Cenozoic Micropaleontologic Events in the Equatorial Pacific Sediments
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概要
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A microbiostratigraphical investigation of five deep-sea sediment cores from the equatorial Pacific was carried out by utilizing planktonic foraminifers, radiolarians and calcareous nannoplankton. Several micropaleontologic events characterized by the first occurrence of taxa were found to provide reliable datum planes for stratigraphic correlation of post-Miocene sediments. These datum planes are : The Buccinosphaera invaginata Datum, Collosphaera tuberosa Datum, Globoquadrina conglomerata Datum, Pulleniatina obliquil-oculata Datum, Gephyrocapsa oceanica Datum, Gephyrocapsa caribbeanica Datum, Anthocyrtidium angulare Datum and Globorotalia (G.) truncatulinoides Datum, in downward sequence. These datum planes are related to the biostratigraphic zonations based on various microfossils, and further to the previously determined paleomagnetic stratigraphy. One new radiolarian species, Amphiropalum praeypsilon, is described.
- 東北大学の論文
- 1979-03-31
著者
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KATO Michio
Department of Gastroenterology, National Hospital Organization Minamiwakayama Medical Center
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Kato Michio
Department Of Gastroenterology National Hospital Organization Minamiwakayama Medical Center
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ODA MOTOYOSHI
Institute of Geology and Paleontology, Graduate School of Science, Tohoku University
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Oda Motoyoshi
Institute Of Geology And Paleontology Faculty Of Science Tohoku University
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Takayanagi Yokichi
Institute of Geology and Paleontology Tohoku University
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Takayama Toshiaki
Department of Geology, College of Liberal Arts, Kanazawa University
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Sakai Toyosaburo
Institute of Geology and Paleontology, Faculty of Science, Tohoku University
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Kato Michio
Department Of Geology Faculty Of Integrated Arts And Science Hiroshima University
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Kato Michio
Department Of Electrical Engineering National Defense Academy
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Takayama Toshiaki
Department Of Geology College Of Liberal Arts Kanazawa University
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Sakai Toyosaburo
Institute Of Geology And Paleontology Faculty Of Science Tohoku University
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Takayanagi Yokichi
Institute Of Geology And Paleontology Faculty Of Science Tohoku University
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