Post-collisional extension of the East Greenland Caledonides: a geophysical perspective
Crustal extension during and following continental collision is well documented in the Arctic Caledonian fold belt. However, models for the post-collisional extension of the Caledonides are mainly based on geoscientific data from Scandinavia. For a more complete understanding of the evolution of the...
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fthighwire:oai:open-archive.highwire.org:gji:140/3/559 2023-05-15T15:05:09+02:00 Post-collisional extension of the East Greenland Caledonides: a geophysical perspective Schlindwein, Vera Jokat, Wilfried 2000-03-01 00:00:00.0 text/html http://gji.oxfordjournals.org/cgi/content/short/140/3/559 https://doi.org/10.1046/j.1365-246X.2000.00036.x en eng Oxford University Press http://gji.oxfordjournals.org/cgi/content/short/140/3/559 http://dx.doi.org/10.1046/j.1365-246X.2000.00036.x Copyright (C) 2000, Oxford University Press Articles TEXT 2000 fthighwire https://doi.org/10.1046/j.1365-246X.2000.00036.x 2013-05-27T15:45:32Z Crustal extension during and following continental collision is well documented in the Arctic Caledonian fold belt. However, models for the post-collisional extension of the Caledonides are mainly based on geoscientific data from Scandinavia. For a more complete understanding of the evolution of the Caledonides, knowledge of the crustal structure of East Greenland is vital. Seismic and gravity studies have revealed a pronounced Moho topography and a west-dipping lower crustal reflector beneath the fjord region of East Greenland. These deep crustal structures are related to Late Caledonian extensional structures at the surface. The observations can be satisfactorily explained by applying simple shear or eduction models proposed for upper crustal extension in Scandinavia to the complementing lower crustal structures in East Greenland. However, exhumation of the Caledonian Northeast Greenland eclogite province cannot be accomplished by these models. Instead, a synthesis of geoscientific data has shown marked differences in the crustal structure of East Greenland north and south of about 76°N, indicating a different crustal evolution of the northern and southern parts of the East Greenland Caledonides. Text Arctic East Greenland Greenland HighWire Press (Stanford University) Arctic Greenland Geophysical Journal International 140 3 559 567 |
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HighWire Press (Stanford University) |
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fthighwire |
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English |
topic |
Articles |
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Articles Schlindwein, Vera Jokat, Wilfried Post-collisional extension of the East Greenland Caledonides: a geophysical perspective |
topic_facet |
Articles |
description |
Crustal extension during and following continental collision is well documented in the Arctic Caledonian fold belt. However, models for the post-collisional extension of the Caledonides are mainly based on geoscientific data from Scandinavia. For a more complete understanding of the evolution of the Caledonides, knowledge of the crustal structure of East Greenland is vital. Seismic and gravity studies have revealed a pronounced Moho topography and a west-dipping lower crustal reflector beneath the fjord region of East Greenland. These deep crustal structures are related to Late Caledonian extensional structures at the surface. The observations can be satisfactorily explained by applying simple shear or eduction models proposed for upper crustal extension in Scandinavia to the complementing lower crustal structures in East Greenland. However, exhumation of the Caledonian Northeast Greenland eclogite province cannot be accomplished by these models. Instead, a synthesis of geoscientific data has shown marked differences in the crustal structure of East Greenland north and south of about 76°N, indicating a different crustal evolution of the northern and southern parts of the East Greenland Caledonides. |
format |
Text |
author |
Schlindwein, Vera Jokat, Wilfried |
author_facet |
Schlindwein, Vera Jokat, Wilfried |
author_sort |
Schlindwein, Vera |
title |
Post-collisional extension of the East Greenland Caledonides: a geophysical perspective |
title_short |
Post-collisional extension of the East Greenland Caledonides: a geophysical perspective |
title_full |
Post-collisional extension of the East Greenland Caledonides: a geophysical perspective |
title_fullStr |
Post-collisional extension of the East Greenland Caledonides: a geophysical perspective |
title_full_unstemmed |
Post-collisional extension of the East Greenland Caledonides: a geophysical perspective |
title_sort |
post-collisional extension of the east greenland caledonides: a geophysical perspective |
publisher |
Oxford University Press |
publishDate |
2000 |
url |
http://gji.oxfordjournals.org/cgi/content/short/140/3/559 https://doi.org/10.1046/j.1365-246X.2000.00036.x |
geographic |
Arctic Greenland |
geographic_facet |
Arctic Greenland |
genre |
Arctic East Greenland Greenland |
genre_facet |
Arctic East Greenland Greenland |
op_relation |
http://gji.oxfordjournals.org/cgi/content/short/140/3/559 http://dx.doi.org/10.1046/j.1365-246X.2000.00036.x |
op_rights |
Copyright (C) 2000, Oxford University Press |
op_doi |
https://doi.org/10.1046/j.1365-246X.2000.00036.x |
container_title |
Geophysical Journal International |
container_volume |
140 |
container_issue |
3 |
container_start_page |
559 |
op_container_end_page |
567 |
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1766336896643891200 |