Alkaline basaltic volcanism in the Tertiary of central East Greenland—the Trekantnunatakker

Abstract The Trekantnunatakker rise from the inland ice NW of the head of Kangerlussuaq fjord on the Blosseville Coast of central East Greenland. In these nunataks the main sequence of Tertiary flood basalts is overlain by picritic and ankaramitic lavas. These mildly alkaline lavas have lower 143 Nd...

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Published in:Transactions of the Royal Society of Edinburgh: Earth Sciences
Main Authors: Brown, P. E., Evans, I. B., Becker, S. M.
Format: Article in Journal/Newspaper
Language:English
Published: Cambridge University Press (CUP) 1999
Subjects:
East Greenland
Greenland
Kangerlussuaq
Ocean Island
Online Access:http://dx.doi.org/10.1017/s0263593300007215
https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0263593300007215
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spelling crcambridgeupr:10.1017/s0263593300007215 2024-09-15T18:04:12+00:00 Alkaline basaltic volcanism in the Tertiary of central East Greenland—the Trekantnunatakker Brown, P. E. Evans, I. B. Becker, S. M. 1999 http://dx.doi.org/10.1017/s0263593300007215 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0263593300007215 en eng Cambridge University Press (CUP) https://www.cambridge.org/core/terms Transactions of the Royal Society of Edinburgh: Earth Sciences volume 90, issue 2, page 165-172 ISSN 0263-5933 1473-7116 journal-article 1999 crcambridgeupr https://doi.org/10.1017/s0263593300007215 2024-07-24T04:01:47Z Abstract The Trekantnunatakker rise from the inland ice NW of the head of Kangerlussuaq fjord on the Blosseville Coast of central East Greenland. In these nunataks the main sequence of Tertiary flood basalts is overlain by picritic and ankaramitic lavas. These mildly alkaline lavas have lower 143 Nd/ 144 Nd and higher 87 Sr/ 86 Sr than the tholeiitic flood basalts. Their isotopic and incompatible element characteristics are similar to those of moderately enriched ocean island basalts, and comparable to the alkaline lavas of the nearby Prinsen af Wales Bjerge. The Trekantnunatakker lavas were the result of small-volume deep melting and it is concluded that an enriched OIB-type source was present as a component of the East Greenland plume. Article in Journal/Newspaper East Greenland Greenland Kangerlussuaq Ocean Island Cambridge University Press Transactions of the Royal Society of Edinburgh: Earth Sciences 90 2 165 172
institution Open Polar
collection Cambridge University Press
op_collection_id crcambridgeupr
language English
description Abstract The Trekantnunatakker rise from the inland ice NW of the head of Kangerlussuaq fjord on the Blosseville Coast of central East Greenland. In these nunataks the main sequence of Tertiary flood basalts is overlain by picritic and ankaramitic lavas. These mildly alkaline lavas have lower 143 Nd/ 144 Nd and higher 87 Sr/ 86 Sr than the tholeiitic flood basalts. Their isotopic and incompatible element characteristics are similar to those of moderately enriched ocean island basalts, and comparable to the alkaline lavas of the nearby Prinsen af Wales Bjerge. The Trekantnunatakker lavas were the result of small-volume deep melting and it is concluded that an enriched OIB-type source was present as a component of the East Greenland plume.
format Article in Journal/Newspaper
author Brown, P. E.
Evans, I. B.
Becker, S. M.
spellingShingle Brown, P. E.
Evans, I. B.
Becker, S. M.
Alkaline basaltic volcanism in the Tertiary of central East Greenland—the Trekantnunatakker
author_facet Brown, P. E.
Evans, I. B.
Becker, S. M.
author_sort Brown, P. E.
title Alkaline basaltic volcanism in the Tertiary of central East Greenland—the Trekantnunatakker
title_short Alkaline basaltic volcanism in the Tertiary of central East Greenland—the Trekantnunatakker
title_full Alkaline basaltic volcanism in the Tertiary of central East Greenland—the Trekantnunatakker
title_fullStr Alkaline basaltic volcanism in the Tertiary of central East Greenland—the Trekantnunatakker
title_full_unstemmed Alkaline basaltic volcanism in the Tertiary of central East Greenland—the Trekantnunatakker
title_sort alkaline basaltic volcanism in the tertiary of central east greenland—the trekantnunatakker
publisher Cambridge University Press (CUP)
publishDate 1999
url http://dx.doi.org/10.1017/s0263593300007215
https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0263593300007215
genre East Greenland
Greenland
Kangerlussuaq
Ocean Island
genre_facet East Greenland
Greenland
Kangerlussuaq
Ocean Island
op_source Transactions of the Royal Society of Edinburgh: Earth Sciences
volume 90, issue 2, page 165-172
ISSN 0263-5933 1473-7116
op_rights https://www.cambridge.org/core/terms
op_doi https://doi.org/10.1017/s0263593300007215
container_title Transactions of the Royal Society of Edinburgh: Earth Sciences
container_volume 90
container_issue 2
container_start_page 165
op_container_end_page 172
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