Nd and Sr isotope compositions from the Gardiner Complex, East Greenland Tertiary igneous province
The Gardiner Complex formed during the early Tertiary opening of the North Atlantic. The complex is strongly alkaline and referred to a zone of alkaline flank magmatism 100 km west of the melting anomaly in the initial rift of the North Atlantic. Earlier investigations have documented that most rock...
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ftciteseerx:oai:CiteSeerX.psu:10.1.1.501.2564 2023-05-15T16:03:45+02:00 Nd and Sr isotope compositions from the Gardiner Complex, East Greenland Tertiary igneous province Troels F. D. Nielsen Paul M. Holm The Pennsylvania State University CiteSeerX Archives application/pdf http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.501.2564 http://2dgf.dk/xpdf/bull40-03-04-280-287.pdf en eng http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.501.2564 http://2dgf.dk/xpdf/bull40-03-04-280-287.pdf Metadata may be used without restrictions as long as the oai identifier remains attached to it. http://2dgf.dk/xpdf/bull40-03-04-280-287.pdf text ftciteseerx 2016-01-08T09:08:36Z The Gardiner Complex formed during the early Tertiary opening of the North Atlantic. The complex is strongly alkaline and referred to a zone of alkaline flank magmatism 100 km west of the melting anomaly in the initial rift of the North Atlantic. Earlier investigations have documented that most rocks of the complex can be referred to three suites which are all suggested to have been formed from a single parental melanephelinitic liquid. The Nd and Sr isotope compositions presented here support this conclusion. Minor deviations are believed to be due to interaction with Archaean basement. The isotopic characteristics suggest that the alkaline magmatism originated in a source similar to that of the contemporaneous picritic and basaltic tholeiites. The isotopic composition of the source is less depleted than pervalent mantle (PREMA) and sets an upper enrichment limit to the composition of the Icelandic plume component 50 Ma ago. Text East Greenland Greenland North Atlantic Unknown Gardiner ENVELOPE(-81.583,-81.583,50.683,50.683) Greenland |
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Open Polar |
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Unknown |
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ftciteseerx |
language |
English |
description |
The Gardiner Complex formed during the early Tertiary opening of the North Atlantic. The complex is strongly alkaline and referred to a zone of alkaline flank magmatism 100 km west of the melting anomaly in the initial rift of the North Atlantic. Earlier investigations have documented that most rocks of the complex can be referred to three suites which are all suggested to have been formed from a single parental melanephelinitic liquid. The Nd and Sr isotope compositions presented here support this conclusion. Minor deviations are believed to be due to interaction with Archaean basement. The isotopic characteristics suggest that the alkaline magmatism originated in a source similar to that of the contemporaneous picritic and basaltic tholeiites. The isotopic composition of the source is less depleted than pervalent mantle (PREMA) and sets an upper enrichment limit to the composition of the Icelandic plume component 50 Ma ago. |
author2 |
The Pennsylvania State University CiteSeerX Archives |
format |
Text |
author |
Troels F. D. Nielsen Paul M. Holm |
spellingShingle |
Troels F. D. Nielsen Paul M. Holm Nd and Sr isotope compositions from the Gardiner Complex, East Greenland Tertiary igneous province |
author_facet |
Troels F. D. Nielsen Paul M. Holm |
author_sort |
Troels F. D. Nielsen |
title |
Nd and Sr isotope compositions from the Gardiner Complex, East Greenland Tertiary igneous province |
title_short |
Nd and Sr isotope compositions from the Gardiner Complex, East Greenland Tertiary igneous province |
title_full |
Nd and Sr isotope compositions from the Gardiner Complex, East Greenland Tertiary igneous province |
title_fullStr |
Nd and Sr isotope compositions from the Gardiner Complex, East Greenland Tertiary igneous province |
title_full_unstemmed |
Nd and Sr isotope compositions from the Gardiner Complex, East Greenland Tertiary igneous province |
title_sort |
nd and sr isotope compositions from the gardiner complex, east greenland tertiary igneous province |
url |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.501.2564 http://2dgf.dk/xpdf/bull40-03-04-280-287.pdf |
long_lat |
ENVELOPE(-81.583,-81.583,50.683,50.683) |
geographic |
Gardiner Greenland |
geographic_facet |
Gardiner Greenland |
genre |
East Greenland Greenland North Atlantic |
genre_facet |
East Greenland Greenland North Atlantic |
op_source |
http://2dgf.dk/xpdf/bull40-03-04-280-287.pdf |
op_relation |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.501.2564 http://2dgf.dk/xpdf/bull40-03-04-280-287.pdf |
op_rights |
Metadata may be used without restrictions as long as the oai identifier remains attached to it. |
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1766399432544223232 |