TY - JOUR
T1 - Using 14C dating of stable humin fractions to assess upbuilding pedogenesis of a buried Holocene humic soil horizon, Towada volcano, Japan
AU - Inoue, Yudzuru
AU - Hiradate, Syuntaro
AU - Sase, Takashi
AU - Hosono, Mamoru
AU - Morita, Sayaka
AU - Matsuzaki, Hiroyuki
N1 - Funding Information:
We thank Dr. Mitsuhisa Baba, Kitasato University School of Veterinary Medicine, for support during field work, and Mrs. Yoko Sunohara Tsuchiya, Technical Specialist, the University of Tokyo, for support with sample preparation for AMS 14 C dating. We also thank Prof. David J. Lowe of the University of Waikato (Hamilton, New Zealand) for his valuable advice. We acknowledge an anonymous reviewer for valuable suggestions that greatly improved the manuscript, and Prof. Michael J. Vepraskas for editorial support. This study was supported in part by a Grant-in-Aid for Scientific Research (C) (Project Leader, Y. Inoue; Project no. 22510014 ).
PY - 2011/11
Y1 - 2011/11
N2 - The genesis of a 40-cm-thick buried Holocene humic soil horizon in a 6-m-high sequence near Towada volcano, Japan, was examined by dating stable, plant-derived humin particles by AMS-based radiocarbon (14C), and by analyzing stable carbon isotope ratios (δ13C), phytolith composition, and soil chemical properties. The AMS dating yielded calibrated ages ranging from 7570-7679 to 6180-6313calyr BP. We obtained a strong correlation (r=0.99, ***p<0.001) between sample depth and the mean age. The (now buried) humic soil was formed by the incremental accumulation of tephric loess and aeolian dust at a constant rate of ~30mm per century for at least 1200years. Whilst the soil surface was slowly rising, graminaceous vegetation was supplied at a constant rate so that developmental upbuilding pedogenesis ensued. The soil was buried and isolated by the fall of the Towada-Chuseri tephra about 6200calyr BP. Thus the tephra-soil sequence near Towada volcano represents both developmental and retardant upbuilding pedogenesis.
AB - The genesis of a 40-cm-thick buried Holocene humic soil horizon in a 6-m-high sequence near Towada volcano, Japan, was examined by dating stable, plant-derived humin particles by AMS-based radiocarbon (14C), and by analyzing stable carbon isotope ratios (δ13C), phytolith composition, and soil chemical properties. The AMS dating yielded calibrated ages ranging from 7570-7679 to 6180-6313calyr BP. We obtained a strong correlation (r=0.99, ***p<0.001) between sample depth and the mean age. The (now buried) humic soil was formed by the incremental accumulation of tephric loess and aeolian dust at a constant rate of ~30mm per century for at least 1200years. Whilst the soil surface was slowly rising, graminaceous vegetation was supplied at a constant rate so that developmental upbuilding pedogenesis ensued. The soil was buried and isolated by the fall of the Towada-Chuseri tephra about 6200calyr BP. Thus the tephra-soil sequence near Towada volcano represents both developmental and retardant upbuilding pedogenesis.
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U2 - 10.1016/j.geoderma.2011.08.011
DO - 10.1016/j.geoderma.2011.08.011
M3 - Article
AN - SCOPUS:80055029029
SN - 0016-7061
VL - 167-168
SP - 85
EP - 90
JO - Geoderma
JF - Geoderma
ER -