Knowledge Resource Center for Ecological Environment in Arid Area
DOI | 10.1016/j.gca.2014.03.036 |
Dripwater organic matter and trace element geochemistry in a semi-arid karst environment: Implications for speleothem paleoclimatology | |
Rutlidge, Helen1,2,6; Baker, Andy2,6; Marjo, Christopher E.1; Andersen, Martin S.3,6; Graham, Peter W.2; Cuthbert, Mark O.3,4; Rau, Gabriel C.3,6; Roshan, Hamid3,6; Markowska, Monika2,5,6; Mariethoz, Gregoire2,6; Jex, Catherine N.2,6 | |
通讯作者 | Baker, Andy |
来源期刊 | GEOCHIMICA ET COSMOCHIMICA ACTA
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ISSN | 0016-7037 |
EISSN | 1872-9533 |
出版年 | 2014 |
卷号 | 135页码:217-230 |
英文摘要 | A series of four short-term infiltration experiments which revealed hydrochemical responses relevant to semi-arid karst environments were carried out above Cathedral Cave, Wellington, New South Wales (NSW), Australia. Dripwater samples were collected at two sites for trace element and organic matter analysis. Organic matter was characterised using fluorescence and interpreted using a PARAFAC model. Three components were isolated that represented unprocessed, soil-derived humiclike and fulvic-like material, processed humic/fulvic-like material and tryptophan-like fluorescence. Principal Component Analysis (PCA) performed on the entire dataset comprising trace element concentrations and PARAFAC scores revealed two dominant components that were identified as soil and limestone bedrock. The soil component was assigned based on significant contributions from the PARAFAC scores and additionally included Ba, Cu, Ni and Mg. The bedrock component included the expected elements of Ca, Mg and Sr as well as Si. The same elemental behaviour was observed in recent stalagmite growth collected from the site. Our experiments demonstrate that existing paleoclimate interpretations of speleothem Mg and Sr, developed in regions of positive water balance, are not readily applicable to water limited environments. We provide a new interpretation of trace element signatures unique to speleothems from water limited karst environments. (C) 2014 Elsevier Ltd. All rights reserved. |
类型 | Article |
语种 | 英语 |
国家 | Australia ; England |
收录类别 | SCI-E |
WOS记录号 | WOS:000335656900011 |
WOS关键词 | DUST DEPOSITS ; CAVE ; FLUORESCENCE ; VARIABILITY ; WATERS ; STALAGMITES ; COMPONENTS ; AUSTRALIA ; BEHAVIOR ; OCEAN |
WOS类目 | Geochemistry & Geophysics |
WOS研究方向 | Geochemistry & Geophysics |
资源类型 | 期刊论文 |
条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/182220 |
作者单位 | 1.UNSW Australia, Mark Wainwright Analyt Ctr, Solid State & Elemental Anal Unit, Kensington, NSW 2052, Australia; 2.UNSW Australia, Connected Waters Initiat Res Ctr, Kensington, NSW 2052, Australia; 3.UNSW Australia, Connected Waters Initiat Res Ctr, Manly Vale, NSW 2093, Australia; 4.Univ Birmingham, Sch Geog Earth & Environm Sci, Birmingham B15 2TT, W Midlands, England; 5.Australian Nucl Sci & Technol Org, Lucas Heights, NSW 2234, Australia; 6.Natl Ctr Groundwater Res & Training, Bedford Pk, SA, Australia |
推荐引用方式 GB/T 7714 | Rutlidge, Helen,Baker, Andy,Marjo, Christopher E.,et al. Dripwater organic matter and trace element geochemistry in a semi-arid karst environment: Implications for speleothem paleoclimatology[J],2014,135:217-230. |
APA | Rutlidge, Helen.,Baker, Andy.,Marjo, Christopher E..,Andersen, Martin S..,Graham, Peter W..,...&Jex, Catherine N..(2014).Dripwater organic matter and trace element geochemistry in a semi-arid karst environment: Implications for speleothem paleoclimatology.GEOCHIMICA ET COSMOCHIMICA ACTA,135,217-230. |
MLA | Rutlidge, Helen,et al."Dripwater organic matter and trace element geochemistry in a semi-arid karst environment: Implications for speleothem paleoclimatology".GEOCHIMICA ET COSMOCHIMICA ACTA 135(2014):217-230. |
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