Interlaboratory comparison of cosmogenic Ne-21 in quartz
We performed an interlaboratory comparison study with the aim to determine the accuracy of cosmogenic Ne-21 measurements in quartz. CREU-1 is a natural quartz standard prepared from amalgamated vein clasts which were crushed, thoroughly mixed, and sieved into 125-250 mu m and 250-500 mu m size fract...
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ftubkoeln:oai:USBKOELN.ub.uni-koeln.de:41421 2023-05-15T13:34:42+02:00 Interlaboratory comparison of cosmogenic Ne-21 in quartz Vermeesch, Pieter Balco, Greg Blard, Pierre-Henri Dunai, Tibor J. Kober, Florian Niedermann, Samuel Shuster, David L. Strasky, Stefan Stuart, Finlay M. Wieler, Rainer Zimmermann, Laurent 2015 https://kups.ub.uni-koeln.de/41421/ eng eng ELSEVIER SCI LTD Vermeesch, Pieter orcid:0000-0003-3404-1209 , Balco, Greg, Blard, Pierre-Henri orcid:0000-0002-8455-8014 , Dunai, Tibor J., Kober, Florian, Niedermann, Samuel orcid:0000-0003-1626-5284 , Shuster, David L., Strasky, Stefan, Stuart, Finlay M., Wieler, Rainer orcid:0000-0001-5666-7494 and Zimmermann, Laurent (2015). Interlaboratory comparison of cosmogenic Ne-21 in quartz. Quat. Geochronol., 26. S. 20 - 29. OXFORD: ELSEVIER SCI LTD. ISSN 1878-0350 ddc:no doc-type:article publishedVersion 2015 ftubkoeln 2022-11-09T07:27:18Z We performed an interlaboratory comparison study with the aim to determine the accuracy of cosmogenic Ne-21 measurements in quartz. CREU-1 is a natural quartz standard prepared from amalgamated vein clasts which were crushed, thoroughly mixed, and sieved into 125-250 mu m and 250-500 mu m size fractions. 50 aliquots of CREU-1 were analyzed by five laboratories employing six different noble gas mass spectrometers. The released gas contained a mixture of 16-30% atmospheric and 70-84% nonatmospheric (predominantly cosmogenic) Ne-21, defining a linear array on the Ne-22/Ne-20-Ne-21/Ne-20 three isotope diagram with a slope of 1.108 +/- 0.014. The internal reproducibility of the measurements is 21 in good agreement with the formal analytical precision for all participating labs. The external reproducibility of the Ne-21 concentrations between labs, however, is significantly overdispersed with respect to the reported analytical precision. We report an average reference concentration for CREU-1 of 348 +/- 10 x 10(6) at [Ne-21]/g[SiO2], and suggest that the 7.1% (2 sigma) overdispersion of our measurements may be representative of the current accuracy of cosmogenic Ne-21 in quartz. CREU-1 was tied to CRONUS-A, which is a second reference material prepared from a sample of Antarctic sandstone. We propose a reference value of 320 +/- 11 x 10(6) at/g for CRONUS-A. The CREU-1 and CRONUS-A intercalibration materials may be used to improve the consistency of cosmogenic Ne-21 to the level of the analytical precision. (C) 2012 Elsevier B.V. All rights reserved. Article in Journal/Newspaper Antarc* Antarctic Cologne University: KUPS Antarctic Cronus ENVELOPE(-64.067,-64.067,-68.850,-68.850) |
institution |
Open Polar |
collection |
Cologne University: KUPS |
op_collection_id |
ftubkoeln |
language |
English |
topic |
ddc:no |
spellingShingle |
ddc:no Vermeesch, Pieter Balco, Greg Blard, Pierre-Henri Dunai, Tibor J. Kober, Florian Niedermann, Samuel Shuster, David L. Strasky, Stefan Stuart, Finlay M. Wieler, Rainer Zimmermann, Laurent Interlaboratory comparison of cosmogenic Ne-21 in quartz |
topic_facet |
ddc:no |
description |
We performed an interlaboratory comparison study with the aim to determine the accuracy of cosmogenic Ne-21 measurements in quartz. CREU-1 is a natural quartz standard prepared from amalgamated vein clasts which were crushed, thoroughly mixed, and sieved into 125-250 mu m and 250-500 mu m size fractions. 50 aliquots of CREU-1 were analyzed by five laboratories employing six different noble gas mass spectrometers. The released gas contained a mixture of 16-30% atmospheric and 70-84% nonatmospheric (predominantly cosmogenic) Ne-21, defining a linear array on the Ne-22/Ne-20-Ne-21/Ne-20 three isotope diagram with a slope of 1.108 +/- 0.014. The internal reproducibility of the measurements is 21 in good agreement with the formal analytical precision for all participating labs. The external reproducibility of the Ne-21 concentrations between labs, however, is significantly overdispersed with respect to the reported analytical precision. We report an average reference concentration for CREU-1 of 348 +/- 10 x 10(6) at [Ne-21]/g[SiO2], and suggest that the 7.1% (2 sigma) overdispersion of our measurements may be representative of the current accuracy of cosmogenic Ne-21 in quartz. CREU-1 was tied to CRONUS-A, which is a second reference material prepared from a sample of Antarctic sandstone. We propose a reference value of 320 +/- 11 x 10(6) at/g for CRONUS-A. The CREU-1 and CRONUS-A intercalibration materials may be used to improve the consistency of cosmogenic Ne-21 to the level of the analytical precision. (C) 2012 Elsevier B.V. All rights reserved. |
format |
Article in Journal/Newspaper |
author |
Vermeesch, Pieter Balco, Greg Blard, Pierre-Henri Dunai, Tibor J. Kober, Florian Niedermann, Samuel Shuster, David L. Strasky, Stefan Stuart, Finlay M. Wieler, Rainer Zimmermann, Laurent |
author_facet |
Vermeesch, Pieter Balco, Greg Blard, Pierre-Henri Dunai, Tibor J. Kober, Florian Niedermann, Samuel Shuster, David L. Strasky, Stefan Stuart, Finlay M. Wieler, Rainer Zimmermann, Laurent |
author_sort |
Vermeesch, Pieter |
title |
Interlaboratory comparison of cosmogenic Ne-21 in quartz |
title_short |
Interlaboratory comparison of cosmogenic Ne-21 in quartz |
title_full |
Interlaboratory comparison of cosmogenic Ne-21 in quartz |
title_fullStr |
Interlaboratory comparison of cosmogenic Ne-21 in quartz |
title_full_unstemmed |
Interlaboratory comparison of cosmogenic Ne-21 in quartz |
title_sort |
interlaboratory comparison of cosmogenic ne-21 in quartz |
publisher |
ELSEVIER SCI LTD |
publishDate |
2015 |
url |
https://kups.ub.uni-koeln.de/41421/ |
long_lat |
ENVELOPE(-64.067,-64.067,-68.850,-68.850) |
geographic |
Antarctic Cronus |
geographic_facet |
Antarctic Cronus |
genre |
Antarc* Antarctic |
genre_facet |
Antarc* Antarctic |
op_relation |
Vermeesch, Pieter orcid:0000-0003-3404-1209 , Balco, Greg, Blard, Pierre-Henri orcid:0000-0002-8455-8014 , Dunai, Tibor J., Kober, Florian, Niedermann, Samuel orcid:0000-0003-1626-5284 , Shuster, David L., Strasky, Stefan, Stuart, Finlay M., Wieler, Rainer orcid:0000-0001-5666-7494 and Zimmermann, Laurent (2015). Interlaboratory comparison of cosmogenic Ne-21 in quartz. Quat. Geochronol., 26. S. 20 - 29. OXFORD: ELSEVIER SCI LTD. ISSN 1878-0350 |
_version_ |
1766056389954764800 |