Hostname: page-component-78c5997874-mlc7c Total loading time: 0 Render date: 2024-11-17T19:13:19.891Z Has data issue: false hasContentIssue false

Reversed Magnetozone in the Late Pleistocene Sediments from the Pacific Coast of Odaka, Northeast Japan

Published online by Cambridge University Press:  20 January 2017

Ken-Ichi Manabe*
Affiliation:
Department of Earth Science, Faculty of Education, Fukushima University, Fukushima 960, Japan

Abstract

Paleomagnetic measurements have been carried out on 103 specimens taken at about 15 cm intervals in a sea cliff exposing the marine terrace formation. Secondary components were removed by partial demagnetization in a peak field of 200 Oe. Two short reversed magnetozones are recognized. Geological and biostratigraphical evidence indicates that they are equivalent to the Blake event, which was first reported by Smith and Foster (1969) (Science 163 , 565–567) from the North Atlantic deep-sea cores. The present result suggests a split nature for the Blake Event.

Type
Research Article
Copyright
University of Washington

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

Barbetti, M. McElhinny, M. (1972). Evidence of a geomagnetic excursion 30,000 yr BP Nature (London) 239 327-330 Google Scholar
Bonhommet, N. Babkine, J. (1967). Sur la présence d'aminantations inversées dans la chaine des Puys Comptes Rendus Hebdomadaires des Seances de l'Academie des Sciences, Serie B 264 92-94 Google Scholar
Clark, H. Kennet, J. (1973). Paleomagnetic excursion recorded in latest Pleistocene deep-sea sediments, Gulf of Mexico Earth and Planetary Science Letters 19 267-274 Google Scholar
Cox, A. Doell, R. Dalrymple, G.B. (1964). Reversals of the earth's magnetic field Science 144 1537-1543 Google Scholar
Denham, C.R. (1974). Blake Polarity Event in Two Giant Cores from the Greater Antilles Outer Ridge Workshop Conference on Late Cenozoic Magnetostratigraphy TokyoabstractGoogle Scholar
Eardley, A.J. Shuey, R.T. Gvosdetsky, V. Nash, W.P. Picard, D. Grey, D.C. Kukla, G.J. (1973). Lake cycles in the Bonneville Basin, Utah Geological Society of America Bulletin 84 211-216 Google Scholar
Ericson, D.B. Ewing, M. Wollin, G. Heezen, B.C. (1961). Atlantic deep-sea sediment cores Geological Society of America Bulletin 72 193-286 Google Scholar
Kamada, Y. (1950). A preliminary report on a Pleistocene marine fauna from Fukushima prefecture Tohoku University Contributions from the Institute of Geology and Paleontology. Short Papers 1 48-53 Google Scholar
Kawai, N. Yaskawa, K. Nakajima, T. Torii, M. Horie, S. (1972). Oscillating geomagnetic field with a recurring reversal discovered from Lake Biwa Proceedings of the Japan Academy 48 186-190 CrossRefGoogle Scholar
Kukla, G.J. Koci, A. (1972). End of the last interglacial in the loess record Quaternary Research 2 374-383 Google Scholar
Nakagawa, H. (1961). Pleistocene eustasy and glacial chronology along the Pacific coastal region of Japan Tohoku University Contributions from the Institute of Geology and Paleontology 54 1-61 Google Scholar
Nakagawa, H. (1967). Quaternary sea levels of the Japanese Islands Journal of Geoscience Osaka City University 10 37-42 Google Scholar
Opdyke, N.D. (1972). Paleomagnetism of deep-sea cores Reviews of Geophysics and Space Physics 10 213-249 CrossRefGoogle Scholar
Smith, J.D. Foster, J.H. (1969). Geomagnetic reversal in Brunhes normal polarity epoch Science 163 565-567 Google Scholar
Suzuki, K. Nakagawa, H. (1971). Late Pleistocene flora from the Pacific coast of Fukushima Prefecture, Japan Tohoku University Science Reports (2nd Series) 42 187-198 Google Scholar
Wollin, G. Ericson, D.B. Ryan, W. Foster, J.H. (1971). Magnetism of the earth and climatic changes Earth and Planetary Science Letters 12 175-183 Google Scholar