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Magnetostratigraphy of the Late Cenozoic of the Boso Peninsula, Central Japan

Published online by Cambridge University Press:  20 January 2017

Hisao Nakagawa
Affiliation:
Institute of Geology and Paleontology, Faculty of Science and Department of Earth Sciences College of General Education, Tohoku University, 980 Sendai, Japan
Nobuaki Niitsuma
Affiliation:
Institute of Geology and Paleontology, Faculty of Science and Department of Earth Sciences College of General Education, Tohoku University, 980 Sendai, Japan

Abstract

Marine Pliocene and Pleistocene beds of the Boso Peninsula are more than 3 km thick and contain abundant fauna and flora. Almost continuous deposition occurred at a high sedimentation rate from the early part of the last reversed geomagnetic polarity epoch to the middle part of the last normal polarity epoch. Several microbiostratigraphic marker horizons enable correlation with deep-sea sediments fully independent of magnetostratigraphic zonation. Globorotalia truncatulinoides first occurs below the normal polarity event BO-B-2, which is correlated with the Olduvai Event in deep-sea sediments, whereas the disappearance of discoasters and the first occurrence of Gephyrocapsa caribbeanica are recognized at the top of BO-B-2, and the first occurrence of Gephyrocapsa oceanica is recognized at the top of BO-B-1. Based on the correlation of the Boso section with Mediterranean stage stratotype sections, the transition from the Pliocene to Pleistocene is estimated to be in the lower part of the Kazusa Group.

Type
Research Article
Copyright
University of Washington

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References

Aoki, N. (1969). Notes on the stratigraphic distributions of some planktonic foraminiferal species in the Kazusa Group, Boso Peninsula Transactions and Proceedings of the Paleontological Society of Japan, New Series 74 81-88 Google Scholar
Aoki, R. (1925). On the coast of the Miura Peninsula Chikyu The Globe 3 101-111 Google Scholar
Gartner, S. (1973). Absolute chronology of the late Neogene calcareous nannofossil succession in the equatorial Pacific Geological Society of America Bulletin 84 2021-2034 Google Scholar
Hays, J.D. Saito, T. Opdyke, N.D. Burckle, L.H. (1969). Pliocene-Pleistocene sediments of the equatorial Pacific: Their paleomagnetic, biostratigraphic, and climatic record Geological Society of America Bulletin 80 1481-1514 Google Scholar
Ida, K. Mitsunashi, T. Kageyama, K. (1956). On the new stratigraphic division of upper Cenozoic in Tokyo District Geological Survey of Japan Bulletin 7 435-436 Google Scholar
Kawai, N. (1951). Magnetic polarization of Tertiary rocks in japan Journal of Geophysical Research 56 73-79 CrossRefGoogle Scholar
Kimura, K. (1974). Magnetic stratigraphy of late Cenozoic sedimentary sections in Boso Peninsula, Niigata Area, and Oga Peninsula, Japan Journal of Geological Society of Japan 80 579-592 Google Scholar
Koike, K. (1952). Geological growth of South Kanto Physiographical Science Research Institute of University of Tokyo Bulletin 10 5-11 Google Scholar
Mitsunashi, T. Yazaki, K. Kageyama, K. Shimada, T. Ono, E. Yasukuni, N. Makino, T. Shinada, Y. Fujiwara, K. Kamata, S. (1961). Geological Maps of the Oil and Gas Field of Japan—4, Futtsu-Otaki, 1:50,000 Geological Survey of Japan Google Scholar
Nakagawa, H. (1962). Structural growth of the Kanto Tectonic Basin Tohoku University, Science Reports, 2nd series Special Volume 5 373-393 Google Scholar
Nakagawa, H. Niitsuma, N. Hayasaka, I. (1969). Late Cenozoic geomagnetic chronology of the Boso Peninsula Journal of Geological Society of Japan 75 267-280 Google Scholar
Nakagawa, H. Niitsuma, N. Kimura, K. Sakai, T. (1975). Magnetic stratigraphy of late Cenozoic stages in Italy and their correlatives in Japan Micropaleontology, Special Publication 1 64-70 Google Scholar
Nakagawa, H. Niitsuma, N. Kitamura, N. Matoba, Y. Takayama, T. Asano, K. (1974). Preliminary results on magnetostratigraphy of Neogene stage stratotype sections in Italy Rivista Italiana di Paleontologia e Stratigrafia 80 615-630 Google Scholar
Naumann, E. (1885). Ueber den Bau und Entstehung der japanischen Inseln Friedländer Berlin Google Scholar
Oda, M. (1975). A chronological interpretation of the paleomagnetic polarity records of the upper Cenozoic of the Boso Peninsula based upon planktonic foraminifera Journal of Geological Society of Japan 81 645-647 Google Scholar
Opdyke, N.D. Burckle, L.H. Todd, A. (1974). The extension of the magnetic time scale in sediments of the central Pacific Ocean Earth and Planetary Science Letters 22 300-306 Google Scholar
Otuka, Y. Koike, K. (1949). Geology of the middle part of the Boso Peninsula Physiographical Science Research Institute of University of Tokyo Bulletin 2 31-32 Google Scholar
Takayama, T. (1967). First report on nannoplankton of the upper Tertiary and Quaternary of the southern Kwanto region, Japan Jahrbuch der Geologischen Bundesanstalt zur Wien 110 169-198 Google Scholar
Takayama, T. (1973). On the distribution of calcareous nannoplankton in the youngest Cenozoic of Japan Memoirs of Geological Society of Japan 8 45-63 Google Scholar
Takayanagi, Y. Takayama, T. Sakai, T. Oda, M. Kato, M. (1976). Late Cenozoic micropaleontological events in the equatorial Pacific sediments Kolpack, R.L. Professor Bandy Memorial Volume in pressGoogle Scholar
Yabe, H. (1925). The Great Kwanto Earthquake of September 1, 1923, geologically considered. The second preliminary report Saito Ho-on Kai, Annual Reports 2 33-44 Google Scholar
Yamashiata, N. Fujita, Y. (1973). The Shin'etsu-Bozu Zone, an intersecting province of the Honshu and Shichito arcs, and the initial stage of the Green Tuff Orogeny: A report of geotectonic researches in the B-zone (Central Japan) Japanese National Committee for Upper Mantle Project. The Crust and Upper Mantle of the Japanese Area, Part 2, Geology and Geochemistry Geological Survey of Japan 61-83 Google Scholar