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Magnetic and Pollen Stratigraphy of the Uonuma Group in Niigata prefecture, North Central Japan

Published online by Cambridge University Press:  20 January 2017

Takashi Nitobe
Takashi Nitobe*
Affiliation:
Misawa Senior High School, Aomori Prefecture, Japan
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Abstract

The Uonuma group, located in the Niigata oil field, represents the upper part of a thick and mostly continuous series of late Cenozoic sediments, in which only the Uonuma is of nonmarine origin. Two main magnetozones and four subzones are recognized and correlated with the Matuyama Reversed and Brunhes Normal polarity epochs. Pollen spectra indicate a climatic deterioration between the Jaramillo Event and the Brunhes/Matuyama boundary, possibly commencing during the Jaramillo Event.

Type
Research Article
Information
Quaternary Research , Volume 7 , Issue 3 , May 1977 , pp. 302 - 315
Copyright
University of Washington

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