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5.2-5.8 ka BP Paleoenvironment of the Southern Slope of Mount Raizan, Japan

Published online by Cambridge University Press:  18 July 2016

Mitsuru Okuno*
Affiliation:
Department of Earth System Science, Faculty of Science, Fukuoka University, Fukuoka 814-0180, Japan
Shinji Nagaoka
Affiliation:
Department of Geography, Faculty of Education, Nagasaki University, Nagasaki 852-8521, Japan
Yoshitaka Hase
Affiliation:
Department of Earth Sciences, Faculty of Science, Kumamoto University, Kumamoto 860-8555, Japan
Yuichi Mori
Affiliation:
Aichi Prefectural Meiwa Senior High School, Nagoya 461-0011, Japan
Masahiko Konomatsu
Affiliation:
Department of Earth Sciences, Faculty of Education, Wakayama University, Wakayama 640-8510, Japan
Toshihiko Takahashi
Affiliation:
Woodworks Yui, Matsuo, Iwate 028-7301, Japan
Toshio Nakamura
Affiliation:
Center for Chronological Research, Nagoya University, Nagoya 464-8602, Japan
Tamio Nishida
Affiliation:
Department of Earth Sciences, Faculty of Culture and Education, Saga University, Saga 840-8502, Japan
*
Corresponding author. Email: [email protected].
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Abstract

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Accelerator mass spectrometry (AMS) radiocarbon dating and paleoecological analysis of slope deposits at Mt Raizan provided seven 14C dates indicating that landslides occurred in that area at 6.0 to 6.3 cal ka BP and 6.5 cal ka BP. Plant macrofossils, pollen grains, and spores point to a mixed forest at that time, consisting of conifers and broad-leaved trees. On the other hand, insect fossil indicates slightly colder climate than that of the flora. This difference may be attributed to varied sensitivities of each proxy to climatic changes.

Type
I. Our ‘Dry’ Environment: Above Sea Level
Copyright
Copyright © 2001 by the Arizona Board of Regents on behalf of the University of Arizona 

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