2004: Palaeoproterozoic age of the basement gneiss complex in the Charcot Land tectonic window, East Greenland Caledonides
The Charcot Land tectonic window exposes crystalline basement gneisses, which form part of the foreland of the East Greenland Caledonides. These gneisses were previously believed to be Archaean in age, on the basis of imprecise K-Ar analyses carried out in the early 1980s on hornblende from amphibol...
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ftciteseerx:oai:CiteSeerX.psu:10.1.1.612.768 2023-05-15T15:54:02+02:00 2004: Palaeoproterozoic age of the basement gneiss complex in the Charcot Land tectonic window, East Greenland Caledonides Kristine Thrane The Pennsylvania State University CiteSeerX Archives application/pdf http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.612.768 http://www.geus.dk/publications/bull/nr6/nr6_p57-66.pdf en eng http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.612.768 http://www.geus.dk/publications/bull/nr6/nr6_p57-66.pdf Metadata may be used without restrictions as long as the oai identifier remains attached to it. http://www.geus.dk/publications/bull/nr6/nr6_p57-66.pdf Caledonides East Greenland geochronology Palaeoproterozoic text ftciteseerx 2016-01-08T14:35:31Z The Charcot Land tectonic window exposes crystalline basement gneisses, which form part of the foreland of the East Greenland Caledonides. These gneisses were previously believed to be Archaean in age, on the basis of imprecise K-Ar analyses carried out in the early 1980s on hornblende from amphibolitic bands and inconclusive Rb/Sr isotope data. New U-Pb single-zircon ion microprobe analyses on the gneisses of the window yield upper intercept ages of 1916 ± 21 and 1928 ± 11 Ma, and are interpreted to represent the age of crystallisation of the igneous protolith. The foreland gneisses of the Charcot Land window are similar in age to parts of the allochthonous gneiss complexes of structurally overlying thrust sheets, but the two terranes have different lithological and structural characteristics. No Archaean rocks have been identified with certainty in any of the East Greenland Caledonian foreland windows. Text Charcot Land East Greenland Greenland Unknown Charcot ENVELOPE(139.017,139.017,-69.367,-69.367) Charcot Land ENVELOPE(-29.000,-29.000,72.033,72.033) Greenland |
institution |
Open Polar |
collection |
Unknown |
op_collection_id |
ftciteseerx |
language |
English |
topic |
Caledonides East Greenland geochronology Palaeoproterozoic |
spellingShingle |
Caledonides East Greenland geochronology Palaeoproterozoic Kristine Thrane 2004: Palaeoproterozoic age of the basement gneiss complex in the Charcot Land tectonic window, East Greenland Caledonides |
topic_facet |
Caledonides East Greenland geochronology Palaeoproterozoic |
description |
The Charcot Land tectonic window exposes crystalline basement gneisses, which form part of the foreland of the East Greenland Caledonides. These gneisses were previously believed to be Archaean in age, on the basis of imprecise K-Ar analyses carried out in the early 1980s on hornblende from amphibolitic bands and inconclusive Rb/Sr isotope data. New U-Pb single-zircon ion microprobe analyses on the gneisses of the window yield upper intercept ages of 1916 ± 21 and 1928 ± 11 Ma, and are interpreted to represent the age of crystallisation of the igneous protolith. The foreland gneisses of the Charcot Land window are similar in age to parts of the allochthonous gneiss complexes of structurally overlying thrust sheets, but the two terranes have different lithological and structural characteristics. No Archaean rocks have been identified with certainty in any of the East Greenland Caledonian foreland windows. |
author2 |
The Pennsylvania State University CiteSeerX Archives |
format |
Text |
author |
Kristine Thrane |
author_facet |
Kristine Thrane |
author_sort |
Kristine Thrane |
title |
2004: Palaeoproterozoic age of the basement gneiss complex in the Charcot Land tectonic window, East Greenland Caledonides |
title_short |
2004: Palaeoproterozoic age of the basement gneiss complex in the Charcot Land tectonic window, East Greenland Caledonides |
title_full |
2004: Palaeoproterozoic age of the basement gneiss complex in the Charcot Land tectonic window, East Greenland Caledonides |
title_fullStr |
2004: Palaeoproterozoic age of the basement gneiss complex in the Charcot Land tectonic window, East Greenland Caledonides |
title_full_unstemmed |
2004: Palaeoproterozoic age of the basement gneiss complex in the Charcot Land tectonic window, East Greenland Caledonides |
title_sort |
2004: palaeoproterozoic age of the basement gneiss complex in the charcot land tectonic window, east greenland caledonides |
url |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.612.768 http://www.geus.dk/publications/bull/nr6/nr6_p57-66.pdf |
long_lat |
ENVELOPE(139.017,139.017,-69.367,-69.367) ENVELOPE(-29.000,-29.000,72.033,72.033) |
geographic |
Charcot Charcot Land Greenland |
geographic_facet |
Charcot Charcot Land Greenland |
genre |
Charcot Land East Greenland Greenland |
genre_facet |
Charcot Land East Greenland Greenland |
op_source |
http://www.geus.dk/publications/bull/nr6/nr6_p57-66.pdf |
op_relation |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.612.768 http://www.geus.dk/publications/bull/nr6/nr6_p57-66.pdf |
op_rights |
Metadata may be used without restrictions as long as the oai identifier remains attached to it. |
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1766389203675906048 |