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Paleoenvironment in Dae-Am San High Moor in the Korean Peninsula

Published online by Cambridge University Press:  18 July 2016

T Yoshioka ,
J-Y Lee ,
H A Takahashi  and
S-J Kang
T Yoshioka
Affiliation:
Institute for Hydrospheric-Atmospheric Sciences, Nagoya University, Nagoya 464-8601, Japan
J-Y Lee
Affiliation:
Institute for Hydrospheric-Atmospheric Sciences, Nagoya University, Nagoya 464-8601, Japan
H A Takahashi
Affiliation:
Department of Earth and Planetary Sciences, Graduate School of Science, Nagoya University, Nagoya 464-8602, Japan
S-J Kang
Affiliation:
Department of Science Education, Chungbuk National University, Chongju, Chungbuk-do, Korea
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Abstract

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We discuss paleoenvironmental changes at the Dae-Am San high moor, located near the Demilitarized Zone at 38°N. This area has been reported to be the only high moor in the Korean peninsula. The 14C age of the bottom sediment (75–80 cm in depth) at this site is about 1900 BP. Since the radiocarbon ages for the intervals at 50–55 cm and 75–80 cm were almost the same, we conclude that the deep layers (55–80 cm) in the high moor were all part of the original soil. Low organic C and N contents in the deeper layers support this inference. The 50–55-cm layer consists of sandy material with very low organic content, suggesting erosion from the surrounding area. The surface layer (0–5 cm) was measured as 190 BP, and the middle layer (30–35 cm) was 870 BP. The bulk sedimentation rate was estimated to be about 0.4 mm yr−1 for the 0–30-cm interval. The δ13C value of organic carbon in the sediments fluctuated with depth. The δ13C profile of the Dae-Am San high moor may be explained by climatic changes which occurred during the Little Ice Age and Medieval Warm Period.

Type
I. Our ‘Dry’ Environment: Above Sea Level
Information
Radiocarbon , Volume 43 , Issue 2B: Proceedings of the 17th International Radiocarbon Conference (Part 2 of 3), Conference Editors: Israel Carmi, Elisabetta Boaretto , 2001 , pp. 555 - 559
Copyright
Copyright © 2001 by the Arizona Board of Regents on behalf of the University of Arizona 

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