A test of stable carbon isotope record characteristics of phreatic and outcrop profiles

Zhang Pu; Liu Weiguo; Qiang Xiaoke; Zhou Weijian; Wu Zhenkun; Song Shaohua

doi:10.1016/j.quaint.2010.03.016

A test of stable carbon isotope record characteristics of phreatic and outcrop profiles

Zhang Pu, Liu Weiguo, Qiang Xiaoke, Zhou Weijian, Wu Zhenkun, Song Shaohua

Research output: Contribution to journal › Article › peer-review

2 Scopus citations

Abstract

Current research on stable carbon isotopes in Chinese loess mostly focuses on the natural outcrops located on the sides of gullies formed by rainfall erosion on the Loess Plateau. In those environments, late processing may influence the carbon isotopic composition of loess-paleosol. This issue is not widely reported in the literature. A comparative analysis of carbon isotopes in phreatic and outcrop profiles was performed for two sites located on the Chinese Loess Plateau (CLP). The results for the Luochuan and Xifeng sites indicate that the distribution characteristics for carbon isotopes (δ¹³C_TOC and δ¹³C_TIC) of phreatic and outcrop profiles present a consistent trend of changes on the glacial-interglacial scales, respectively. High δ¹³C_TOC values are found in paleosol (S₀ and S₁) and weak paleosol (L₁SS₁), and low values are found in the loess stage; however, the high δ¹³C_TIC values are found in less pedogenically altered loess layers, and low δ¹³C_TIC values are found in paleosol horizons. Therefore, late processing does not appear to influence the stable carbon isotope composition of the loess from natural outcrop profiles on glacial-interglacial scales for studied profiles. This finding indicates that the carbon isotope composition of easily excavated natural outcrop profiles can accurately record the characteristics of paleo-vegetation and paleo-climate on glacial-interglacial scales.

Original language	English (US)
Pages (from-to)	75-80
Number of pages	6
Journal	Quaternary International
Volume	227
Issue number	1
DOIs	https://doi.org/10.1016/j.quaint.2010.03.016
State	Published - Nov 1 2010
Externally published	Yes

Bibliographical note

Funding Information:
This research was supported by the National Natural Science Foundation of China (No. 4067 3012, 40873011 ), the Chinese Academy of Sciences (No. KZCX2-YW-149 ), the State Key Laboratory of Loess and Quaternary Geology, Institute of Earth Environment, CAS (No. SKLLQ G0823 ), and the West Light Foundation of the Chinese Academy of Sciences (No. 2006ZD02 ). We are indebted to reviewers for constructive reviews.

Copyright:
Copyright 2010 Elsevier B.V., All rights reserved.

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10.1016/j.quaint.2010.03.016

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title = "A test of stable carbon isotope record characteristics of phreatic and outcrop profiles",

abstract = "Current research on stable carbon isotopes in Chinese loess mostly focuses on the natural outcrops located on the sides of gullies formed by rainfall erosion on the Loess Plateau. In those environments, late processing may influence the carbon isotopic composition of loess-paleosol. This issue is not widely reported in the literature. A comparative analysis of carbon isotopes in phreatic and outcrop profiles was performed for two sites located on the Chinese Loess Plateau (CLP). The results for the Luochuan and Xifeng sites indicate that the distribution characteristics for carbon isotopes (δ13CTOC and δ13CTIC) of phreatic and outcrop profiles present a consistent trend of changes on the glacial-interglacial scales, respectively. High δ13CTOC values are found in paleosol (S0 and S1) and weak paleosol (L1SS1), and low values are found in the loess stage; however, the high δ13CTIC values are found in less pedogenically altered loess layers, and low δ13CTIC values are found in paleosol horizons. Therefore, late processing does not appear to influence the stable carbon isotope composition of the loess from natural outcrop profiles on glacial-interglacial scales for studied profiles. This finding indicates that the carbon isotope composition of easily excavated natural outcrop profiles can accurately record the characteristics of paleo-vegetation and paleo-climate on glacial-interglacial scales.",

author = "Zhang Pu and Liu Weiguo and Qiang Xiaoke and Zhou Weijian and Wu Zhenkun and Song Shaohua",

note = "Funding Information: This research was supported by the National Natural Science Foundation of China (No. 4067 3012, 40873011 ), the Chinese Academy of Sciences (No. KZCX2-YW-149 ), the State Key Laboratory of Loess and Quaternary Geology, Institute of Earth Environment, CAS (No. SKLLQ G0823 ), and the West Light Foundation of the Chinese Academy of Sciences (No. 2006ZD02 ). We are indebted to reviewers for constructive reviews. Copyright: Copyright 2010 Elsevier B.V., All rights reserved.",

year = "2010",

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doi = "10.1016/j.quaint.2010.03.016",

language = "English (US)",

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AU - Pu, Zhang

AU - Weiguo, Liu

AU - Xiaoke, Qiang

AU - Weijian, Zhou

AU - Zhenkun, Wu

AU - Shaohua, Song

N1 - Funding Information: This research was supported by the National Natural Science Foundation of China (No. 4067 3012, 40873011 ), the Chinese Academy of Sciences (No. KZCX2-YW-149 ), the State Key Laboratory of Loess and Quaternary Geology, Institute of Earth Environment, CAS (No. SKLLQ G0823 ), and the West Light Foundation of the Chinese Academy of Sciences (No. 2006ZD02 ). We are indebted to reviewers for constructive reviews. Copyright: Copyright 2010 Elsevier B.V., All rights reserved.

PY - 2010/11/1

Y1 - 2010/11/1

N2 - Current research on stable carbon isotopes in Chinese loess mostly focuses on the natural outcrops located on the sides of gullies formed by rainfall erosion on the Loess Plateau. In those environments, late processing may influence the carbon isotopic composition of loess-paleosol. This issue is not widely reported in the literature. A comparative analysis of carbon isotopes in phreatic and outcrop profiles was performed for two sites located on the Chinese Loess Plateau (CLP). The results for the Luochuan and Xifeng sites indicate that the distribution characteristics for carbon isotopes (δ13CTOC and δ13CTIC) of phreatic and outcrop profiles present a consistent trend of changes on the glacial-interglacial scales, respectively. High δ13CTOC values are found in paleosol (S0 and S1) and weak paleosol (L1SS1), and low values are found in the loess stage; however, the high δ13CTIC values are found in less pedogenically altered loess layers, and low δ13CTIC values are found in paleosol horizons. Therefore, late processing does not appear to influence the stable carbon isotope composition of the loess from natural outcrop profiles on glacial-interglacial scales for studied profiles. This finding indicates that the carbon isotope composition of easily excavated natural outcrop profiles can accurately record the characteristics of paleo-vegetation and paleo-climate on glacial-interglacial scales.

AB - Current research on stable carbon isotopes in Chinese loess mostly focuses on the natural outcrops located on the sides of gullies formed by rainfall erosion on the Loess Plateau. In those environments, late processing may influence the carbon isotopic composition of loess-paleosol. This issue is not widely reported in the literature. A comparative analysis of carbon isotopes in phreatic and outcrop profiles was performed for two sites located on the Chinese Loess Plateau (CLP). The results for the Luochuan and Xifeng sites indicate that the distribution characteristics for carbon isotopes (δ13CTOC and δ13CTIC) of phreatic and outcrop profiles present a consistent trend of changes on the glacial-interglacial scales, respectively. High δ13CTOC values are found in paleosol (S0 and S1) and weak paleosol (L1SS1), and low values are found in the loess stage; however, the high δ13CTIC values are found in less pedogenically altered loess layers, and low δ13CTIC values are found in paleosol horizons. Therefore, late processing does not appear to influence the stable carbon isotope composition of the loess from natural outcrop profiles on glacial-interglacial scales for studied profiles. This finding indicates that the carbon isotope composition of easily excavated natural outcrop profiles can accurately record the characteristics of paleo-vegetation and paleo-climate on glacial-interglacial scales.

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A test of stable carbon isotope record characteristics of phreatic and outcrop profiles

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