Comparison of paleoclimatic change from Zr/Rb ratios in Chinese loess with marine isotope records over the 2.6–1.2 Ma BP interval

Lianwen Liu; Jun Chen; Junfeng Ji; Yang Chen

doi:10.1029/2004gl019693

journal article Aug 01, 2004

Comparison of paleoclimatic change from Zr/Rb ratios in Chinese loess with marine isotope records over the 2.6–1.2 Ma BP interval

Lianwen Liu Jun Chen

Junfeng Ji

Yang Chen

Geophysical Research Letters Vol. 31 No. 15 · American Geophysical Union (AGU)

View at Publisher Save 10.1029/2004gl019693

Abstract

The loess‐paleosol sequences in north China act as a key archive in the study of continental paleoclimatic change over the last 2.6 Ma. However, the correlation between the continental loess records and the marine sediments over the 2.6–1.2 Ma BP interval is poorly studied. In this paper, Zr and Rb concentrations were measured on samples taken at 20 cm intervals from the Lingtai section over the interval from 2.6–1.2 Ma BP. Because Zr is enriched in coarse grain fractions whereas Rb is enriched in the fine fractions which are retained during loess pedogenesis, the Zr/Rb in loess can reflect the original grain size variation and serve as a proxy for winter monsoon strength. Our Zr/Rb ratios over the interval from 2.6–1.2 Ma BP generally match the marine δ18O record, especially during the 1.9–1.2 Ma BP interval. Strong 400 ka periodicity cycles found in the loess Zr/Rb ratio record are similar to the marine δ13C record, suggesting a possible low latitude influence on the paleoclimatic regime during this interval.

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Details

Published: Aug 01, 2004
Vol/Issue: 31(15)
License: View

Authors

L

Lianwen Liu

Institute of Surficial Geochemistry, Department of Earth Sciences Nanjing University Nanjing China; Laboratory of Marine Geology Tongji University Shanghai China

J

Jun Chen

Institute of Surficial Geochemistry, Department of Earth Sciences Nanjing University Nanjing China

J

Junfeng Ji

Institute of Surficial Geochemistry, Department of Earth Sciences Nanjing University Nanjing China

Y

Yang Chen

Institute of Surficial Geochemistry, Department of Earth Sciences Nanjing University Nanjing China

Cite This Article

Lianwen Liu, Jun Chen, Junfeng Ji, et al. (2004). Comparison of paleoclimatic change from Zr/Rb ratios in Chinese loess with marine isotope records over the 2.6–1.2 Ma BP interval. Geophysical Research Letters, 31(15). https://doi.org/10.1029/2004gl019693

Comparison of paleoclimatic change from Zr/Rb ratios in Chinese loess with marine isotope records over the 2.6–1.2 Ma BP interval

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