Xu, S., Liu, C. Q., Freeman, S. , Lang, Y. C., Schnabel, C., Tu, C. L., Wilcken, K. and Zhao, Z. Q. (2013) In-situ cosmogenic 36Cl denudation rates of carbonates in Guizhou karst area. Chinese Science Bulletin, 58(20), pp. 2473-2479. (doi: 10.1007/S11434-013-5756-8)
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Abstract
This study quantifies surface denudation of carbonate rocks by the first application of in-situ cosmogenic <sup>36</sup>Cl in China. Concentrations of natural Cl and in-situ cosmogenic <sup>36</sup>Cl in bare carbonates from Guizhou karst areas were measured with isotope dilution by accelerator mass spectrometer. The Cl concentration varied from 16 to 206 ppm. The <sup>36</sup>Cl concentrations were in range of (0.8–2.4)×106 atom g−1, resulting in total denudation rates of 20–50 mm ka−1 that averaged over a 104–105 a timescale. The <sup>36</sup>Cl-denudation rates showed roughly a negative correlation with the local mean temperature. This preliminary observation may suggest the variations of proportions of chemical weathering and physical erosion in denudation process, depending upon local climatic conditions.
Item Type: | Articles |
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Status: | Published |
Refereed: | Yes |
Glasgow Author(s) Enlighten ID: | Schnabel, Dr Christoph and Wilcken, Mr Klaus and Xu, Dr Sheng and Freeman, Professor Stewart |
Authors: | Xu, S., Liu, C. Q., Freeman, S., Lang, Y. C., Schnabel, C., Tu, C. L., Wilcken, K., and Zhao, Z. Q. |
College/School: | College of Science and Engineering > Scottish Universities Environmental Research Centre |
Journal Name: | Chinese Science Bulletin |
Publisher: | Springer Berlin Heidelberg |
ISSN: | 1001-6538 |
ISSN (Online): | 1861-9541 |
Copyright Holders: | Copyright © 2013 The Authors |
First Published: | First published in Chinese Science Bulletin 58(20):2473-2479 |
Publisher Policy: | Reproduced under a Creative Commons License |
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