Deep structure of the V ring Margin: the transition from a continental shield to a young oceanic lithosphere
The present-day lithospheric structure across the Norwegian Margin in the V ring region is presented. The V ring Margin is characterized by the presence of large volume of magmatic underplating, thick Mesozoic basins, and prominent crustal thinning. Results from recent deep seismic experiments in th...
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ftciteseerx:oai:CiteSeerX.psu:10.1.1.630.6463 2023-05-15T16:13:04+02:00 Deep structure of the V ring Margin: the transition from a continental shield to a young oceanic lithosphere W. Wheeler B C R. Karpuz D The Pennsylvania State University CiteSeerX Archives application/pdf http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.630.6463 http://www.ija.csic.es/gt/gdl/jverges/PDF/Fernandez_et_al_EPSL_2004.pdf en eng http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.630.6463 http://www.ija.csic.es/gt/gdl/jverges/PDF/Fernandez_et_al_EPSL_2004.pdf Metadata may be used without restrictions as long as the oai identifier remains attached to it. http://www.ija.csic.es/gt/gdl/jverges/PDF/Fernandez_et_al_EPSL_2004.pdf text ftciteseerx 2016-01-08T15:28:09Z The present-day lithospheric structure across the Norwegian Margin in the V ring region is presented. The V ring Margin is characterized by the presence of large volume of magmatic underplating, thick Mesozoic basins, and prominent crustal thinning. Results from recent deep seismic experiments in the V ring Basin and V ring Marginal High and 3-D gravity modelling have been implemented in a regional 2-D lithospheric transect that runs from the Norwegian Caledonian Belt to the oceanic domain, crossing the transition between the Precambrian Fennoscandian/ Baltic shield and the Cenozoic northern North Atlantic oceanic lithosphere. The modelling approach integrates elevation, gravity, geoid and heat flow data under the assumptions of thermal steady-state and local isostasy. The results confirm and refine the major trends of the crustal geometry which is characterized by a Moho depth varying from about 45 km beneath the Caledonian thrusts, to 30 km beneath the Tr ndelag Platform, to 20^14 km beneath the V ring Basin and to 13 km in the oceanic domain. The lithosphere thins from the Norwegian Caledonian Belt (190 km thick) to the oceanic domain (6 60 km) in a stepwise manner reflecting the progressive seawards migration of lithospheric deformation since the Paleozoic. Our lithospheric thickness results are different from those predicted by post-rift lithospheric cooling models. In the oceanic domain, observed residual bathymetry (V600 m) is interpreted as the remaining effect of a deep seated thermal perturbation during the upper Cretaceous which would also produce a Text Fennoscandian North Atlantic Unknown |
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English |
description |
The present-day lithospheric structure across the Norwegian Margin in the V ring region is presented. The V ring Margin is characterized by the presence of large volume of magmatic underplating, thick Mesozoic basins, and prominent crustal thinning. Results from recent deep seismic experiments in the V ring Basin and V ring Marginal High and 3-D gravity modelling have been implemented in a regional 2-D lithospheric transect that runs from the Norwegian Caledonian Belt to the oceanic domain, crossing the transition between the Precambrian Fennoscandian/ Baltic shield and the Cenozoic northern North Atlantic oceanic lithosphere. The modelling approach integrates elevation, gravity, geoid and heat flow data under the assumptions of thermal steady-state and local isostasy. The results confirm and refine the major trends of the crustal geometry which is characterized by a Moho depth varying from about 45 km beneath the Caledonian thrusts, to 30 km beneath the Tr ndelag Platform, to 20^14 km beneath the V ring Basin and to 13 km in the oceanic domain. The lithosphere thins from the Norwegian Caledonian Belt (190 km thick) to the oceanic domain (6 60 km) in a stepwise manner reflecting the progressive seawards migration of lithospheric deformation since the Paleozoic. Our lithospheric thickness results are different from those predicted by post-rift lithospheric cooling models. In the oceanic domain, observed residual bathymetry (V600 m) is interpreted as the remaining effect of a deep seated thermal perturbation during the upper Cretaceous which would also produce a |
author2 |
The Pennsylvania State University CiteSeerX Archives |
format |
Text |
author |
W. Wheeler B C R. Karpuz D |
spellingShingle |
W. Wheeler B C R. Karpuz D Deep structure of the V ring Margin: the transition from a continental shield to a young oceanic lithosphere |
author_facet |
W. Wheeler B C R. Karpuz D |
author_sort |
W. Wheeler B C |
title |
Deep structure of the V ring Margin: the transition from a continental shield to a young oceanic lithosphere |
title_short |
Deep structure of the V ring Margin: the transition from a continental shield to a young oceanic lithosphere |
title_full |
Deep structure of the V ring Margin: the transition from a continental shield to a young oceanic lithosphere |
title_fullStr |
Deep structure of the V ring Margin: the transition from a continental shield to a young oceanic lithosphere |
title_full_unstemmed |
Deep structure of the V ring Margin: the transition from a continental shield to a young oceanic lithosphere |
title_sort |
deep structure of the v ring margin: the transition from a continental shield to a young oceanic lithosphere |
url |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.630.6463 http://www.ija.csic.es/gt/gdl/jverges/PDF/Fernandez_et_al_EPSL_2004.pdf |
genre |
Fennoscandian North Atlantic |
genre_facet |
Fennoscandian North Atlantic |
op_source |
http://www.ija.csic.es/gt/gdl/jverges/PDF/Fernandez_et_al_EPSL_2004.pdf |
op_relation |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.630.6463 http://www.ija.csic.es/gt/gdl/jverges/PDF/Fernandez_et_al_EPSL_2004.pdf |
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Metadata may be used without restrictions as long as the oai identifier remains attached to it. |
_version_ |
1765998667486986240 |