de.mpg.escidoc.pubman.appbase.FacesBean
English
 
Help Guide Privacy Policy Disclaimer Contact us
  Advanced SearchBrowse

Item

ITEM ACTIONSEXPORT
  Trace element variability in single ostracod valves as a proxy for hydrochemical change in Nam Co, central Tibet, during the Holocene

Yang, Q., Jochum, K. P., Stoll, B., Weis, U., Börner, N., Schwalb, A., et al. (2014). Trace element variability in single ostracod valves as a proxy for hydrochemical change in Nam Co, central Tibet, during the Holocene. Palaeogeography, Palaeoclimatology, Palaeoecology, 399, 225-235. doi:10.1016/j.palaeo.2014.01.014.

Item is

Basic

show hide
Item Permalink: http://hdl.handle.net/11858/00-001M-0000-0024-B4F5-6 Version Permalink: http://hdl.handle.net/11858/00-001M-0000-0024-B4F6-4
Genre: Journal Article

Files

show Files

Locators

show

Creators

show
hide
 Creators:
Yang, Qichao1, Author              
Jochum, Klaus Peter1, Author              
Stoll, Brigitte1, Author              
Weis, Ulrike1, Author              
Börner, Nicole2, Author
Schwalb, Antje2, Author
Frenzel, Peter2, Author
Scholz, Denis2, Author
Doberschütz, Stefan2, Author
Haberzettl, Torsten2, Author
Gleixner, Gerd2, Author
Mäusbacher, Roland2, Author
Zhu, Liping2, Author
Andreae, Meinrat O.1, Author              
Affiliations:
1Biogeochemistry, Max Planck Institute for Chemistry, Max Planck Society, escidoc:1826286              
2external, escidoc:persistent22              

Content

show
hide
Free keywords: -
 Abstract: Ostracod shells, belonging to three taxa (Leucocytherella sinensis Huang, 1982, ?Leucocythere dorsotuberosa Huang, 1982 and ?L dorsotuberosa f. postilirata sensu Pang, 1985), were collected from two sediment cores from Lake Nam Co, on the central Tibetan Plateau. Two variants of LA-ICP-MS (laser ablation-inductively coupled plasma-mass spectrometry), spot and line-scan analyses, were used to investigate trace element concentrations (Mg, Sr, Ba, U and rare earth elements [REEs]) in single ostracod shells. The results suggest that the line-scan method can provide better precision than the spot analysis and is therefore preferred. No significant difference in trace element composition between taxa was detected in our study. Fluctuations of Mg/Ca and Sr/Ca in the shells show good agreement with the reported lake level changes during the Holocene, indicating that ostracod Mg and Sr can be related to palaeohydrochemical processes in this area. A high correlation between Ba/Ca and Sr/Ca was detected in our study, perhaps implying that both metals were controlled by the same mechanisms. A possible relationship between ostracod U/Ca and the past redox conditions on the lake bottom is discussed. Relatively low and constant La/Ca was observed, which could be due to the REE characteristics in the lake water, or ostracod biological processes, or even the associated Fe-Mn and/or organic contaminants. Future studies on more specimens from this area, especially shells from living ostracods, are essential to investigate the potential of ostracod Ba, U and REEs for use as palaeoenvironmental indicators. (C) 2014 Elsevier B.V. All rights reserved.

Details

show
hide
Language(s):
 Dates: 2014
 Publication Status: Published in print
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Method: -
 Degree: -

Event

show

Legal Case

show

Project information

show

Source 1

show
hide
Title: Palaeogeography, Palaeoclimatology, Palaeoecology
Source Genre: Journal
 Creator(s):
Affiliations:
Publ. Info: Amsterdam : Elsevier
Pages: - Volume / Issue: 399 Sequence Number: - Start / End Page: 225 - 235 Identifier: ISSN: 0031-0182
CoNE: http://pubman.mpdl.mpg.de/cone/journals/resource/954925431351