Trace element analyses of spheres from the melt zone of the Greenland ice cap using synchrotron X ray fluorescence
Synchrotron X-ray fluorescence spectra of unpolished iron and chondritic spheres extracted from sediments collected on the melt zone of the Greenland ice cap allow the analysis of Ni, Cu, Zn, Ga, Ge, Pb, and Se with minimum detection limits on the order of several parts per million. All detected ele...
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1986
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ftnasantrs:oai:casi.ntrs.nasa.gov:19870046809 2023-05-15T16:27:09+02:00 Trace element analyses of spheres from the melt zone of the Greenland ice cap using synchrotron X ray fluorescence Chevallier, P. Wang, J. Jehanno, C. Maurette, M. Sutton, S. R. Unclassified, Unlimited, Publicly available Mar 30, 1986 http://ntrs.nasa.gov/search.jsp?R=19870046809 unknown http://ntrs.nasa.gov/search.jsp?R=19870046809 Accession ID: 87A34083 Copyright Other Sources 91 Journal of Geophysical Research; 92; E649-E65 1986 ftnasantrs 2012-02-15T17:12:55Z Synchrotron X-ray fluorescence spectra of unpolished iron and chondritic spheres extracted from sediments collected on the melt zone of the Greenland ice cap allow the analysis of Ni, Cu, Zn, Ga, Ge, Pb, and Se with minimum detection limits on the order of several parts per million. All detected elements are depleted relative to chondritic abundance with the exception of Pb, which shows enrichments up to a factor of 500. An apparent anticorrelation between the Ni-content and trace element concentration was observed in both types of spherules. The fractionation patterns of the iron and chondritic spheres are not complementary and consequently the two iron spheres examined in this study are unlikely to result from ejection of globules of Fe/Ni from parent chondritic micrometeoroids. Other/Unknown Material Greenland Ice cap NASA Technical Reports Server (NTRS) Greenland |
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NASA Technical Reports Server (NTRS) |
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ftnasantrs |
language |
unknown |
topic |
91 |
spellingShingle |
91 Chevallier, P. Wang, J. Jehanno, C. Maurette, M. Sutton, S. R. Trace element analyses of spheres from the melt zone of the Greenland ice cap using synchrotron X ray fluorescence |
topic_facet |
91 |
description |
Synchrotron X-ray fluorescence spectra of unpolished iron and chondritic spheres extracted from sediments collected on the melt zone of the Greenland ice cap allow the analysis of Ni, Cu, Zn, Ga, Ge, Pb, and Se with minimum detection limits on the order of several parts per million. All detected elements are depleted relative to chondritic abundance with the exception of Pb, which shows enrichments up to a factor of 500. An apparent anticorrelation between the Ni-content and trace element concentration was observed in both types of spherules. The fractionation patterns of the iron and chondritic spheres are not complementary and consequently the two iron spheres examined in this study are unlikely to result from ejection of globules of Fe/Ni from parent chondritic micrometeoroids. |
format |
Other/Unknown Material |
author |
Chevallier, P. Wang, J. Jehanno, C. Maurette, M. Sutton, S. R. |
author_facet |
Chevallier, P. Wang, J. Jehanno, C. Maurette, M. Sutton, S. R. |
author_sort |
Chevallier, P. |
title |
Trace element analyses of spheres from the melt zone of the Greenland ice cap using synchrotron X ray fluorescence |
title_short |
Trace element analyses of spheres from the melt zone of the Greenland ice cap using synchrotron X ray fluorescence |
title_full |
Trace element analyses of spheres from the melt zone of the Greenland ice cap using synchrotron X ray fluorescence |
title_fullStr |
Trace element analyses of spheres from the melt zone of the Greenland ice cap using synchrotron X ray fluorescence |
title_full_unstemmed |
Trace element analyses of spheres from the melt zone of the Greenland ice cap using synchrotron X ray fluorescence |
title_sort |
trace element analyses of spheres from the melt zone of the greenland ice cap using synchrotron x ray fluorescence |
publishDate |
1986 |
url |
http://ntrs.nasa.gov/search.jsp?R=19870046809 |
op_coverage |
Unclassified, Unlimited, Publicly available |
geographic |
Greenland |
geographic_facet |
Greenland |
genre |
Greenland Ice cap |
genre_facet |
Greenland Ice cap |
op_source |
Other Sources |
op_relation |
http://ntrs.nasa.gov/search.jsp?R=19870046809 Accession ID: 87A34083 |
op_rights |
Copyright |
_version_ |
1766016238287323136 |