Seismic anisotropy and mantle structure of the Rae craton, central Canada, from joint interpretation of SKS splitting and receiver functions
Earthquakes recorded at 36 stations in Nunavut between 1992 and 2011 and analyzed jointly using receiver-function and SKS-splitting techniques indicate the presence of multiple, dipping anisotropic layers in the lithosphere beneath the northern Hudson Bay and Baffin Island region. Prominent disconti...
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Online Access: | https://hdl.handle.net/1983/99052e86-09dd-41a0-aafd-a18297dbd3d3 https://research-information.bris.ac.uk/en/publications/99052e86-09dd-41a0-aafd-a18297dbd3d3 https://doi.org/10.1016/j.precamres.2012.03.003 |
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ftubristolcris:oai:research-information.bris.ac.uk:publications/99052e86-09dd-41a0-aafd-a18297dbd3d3 2024-01-28T10:04:39+01:00 Seismic anisotropy and mantle structure of the Rae craton, central Canada, from joint interpretation of SKS splitting and receiver functions Snyder, D. B. Berman, R. G. Kendall, J. -M. Sanborn-Barrie, M. 2013-07 https://hdl.handle.net/1983/99052e86-09dd-41a0-aafd-a18297dbd3d3 https://research-information.bris.ac.uk/en/publications/99052e86-09dd-41a0-aafd-a18297dbd3d3 https://doi.org/10.1016/j.precamres.2012.03.003 eng eng info:eu-repo/semantics/restrictedAccess Snyder , D B , Berman , R G , Kendall , J -M & Sanborn-Barrie , M 2013 , ' Seismic anisotropy and mantle structure of the Rae craton, central Canada, from joint interpretation of SKS splitting and receiver functions ' , Precambrian Research , vol. 232 , pp. 189-208 . https://doi.org/10.1016/j.precamres.2012.03.003 Hudson Bay SKS anisotropy Mantle lithosphere Rae craton Mantle discontinuities WESTERN CHURCHILL PROVINCE TRANS-HUDSON OROGEN SNOWBIRD TECTONIC ZONE COMMITTEE BAY BELT U-PB AZIMUTHAL ANISOTROPY BAFFIN-ISLAND WAVE GEOCHRONOLOGY LAURENTIA article 2013 ftubristolcris https://doi.org/10.1016/j.precamres.2012.03.003 2024-01-04T23:41:22Z Earthquakes recorded at 36 stations in Nunavut between 1992 and 2011 and analyzed jointly using receiver-function and SKS-splitting techniques indicate the presence of multiple, dipping anisotropic layers in the lithosphere beneath the northern Hudson Bay and Baffin Island region. Prominent discontinuities indicate layers interpreted to dip at 6-30 degrees at depths between 50 and 150 km beneath ten of the stations. One set of regionally continuous discontinuities in anisotropic fabric in the southeastern Rae craton dip gently southeast consistent with underthrusting beneath the Hearne and Meta Incognita-Sugluk blocks. SKS splitting recorded at twelve stations indicate patterns characteristic of two layers of anisotropic fabric. The deeper fabric as well as the single fast polarization direction recorded at other stations appears aligned with recent plate motion. The shallower fabric orientations at stations on and south of Southampton Island in northern Hudson Bay are consistent with known crustal fabric orientations formed during early (pre-1.85 Ga) stages of the Hudsonian orogeny. The shallower fabric north and west of Southampton Island has a more northerly orientation and is associated with west-dipping discontinuities that may correspond to Neoarchean accretion of the Mesoarchean north Rae domain to the central Rae domain. Crown Copyright (C) 2012 Published by Elsevier B.V. All rights reserved. Article in Journal/Newspaper Baffin Island Baffin Committee Bay Hudson Bay Nunavut Southampton Island University of Bristol: Bristol Research Baffin Island Canada Committee Bay ENVELOPE(-86.899,-86.899,68.268,68.268) Hudson Hudson Bay Nunavut Rae ENVELOPE(-116.053,-116.053,62.834,62.834) Southampton Island ENVELOPE(-84.501,-84.501,64.463,64.463) Precambrian Research 232 189 208 |
institution |
Open Polar |
collection |
University of Bristol: Bristol Research |
op_collection_id |
ftubristolcris |
language |
English |
topic |
Hudson Bay SKS anisotropy Mantle lithosphere Rae craton Mantle discontinuities WESTERN CHURCHILL PROVINCE TRANS-HUDSON OROGEN SNOWBIRD TECTONIC ZONE COMMITTEE BAY BELT U-PB AZIMUTHAL ANISOTROPY BAFFIN-ISLAND WAVE GEOCHRONOLOGY LAURENTIA |
spellingShingle |
Hudson Bay SKS anisotropy Mantle lithosphere Rae craton Mantle discontinuities WESTERN CHURCHILL PROVINCE TRANS-HUDSON OROGEN SNOWBIRD TECTONIC ZONE COMMITTEE BAY BELT U-PB AZIMUTHAL ANISOTROPY BAFFIN-ISLAND WAVE GEOCHRONOLOGY LAURENTIA Snyder, D. B. Berman, R. G. Kendall, J. -M. Sanborn-Barrie, M. Seismic anisotropy and mantle structure of the Rae craton, central Canada, from joint interpretation of SKS splitting and receiver functions |
topic_facet |
Hudson Bay SKS anisotropy Mantle lithosphere Rae craton Mantle discontinuities WESTERN CHURCHILL PROVINCE TRANS-HUDSON OROGEN SNOWBIRD TECTONIC ZONE COMMITTEE BAY BELT U-PB AZIMUTHAL ANISOTROPY BAFFIN-ISLAND WAVE GEOCHRONOLOGY LAURENTIA |
description |
Earthquakes recorded at 36 stations in Nunavut between 1992 and 2011 and analyzed jointly using receiver-function and SKS-splitting techniques indicate the presence of multiple, dipping anisotropic layers in the lithosphere beneath the northern Hudson Bay and Baffin Island region. Prominent discontinuities indicate layers interpreted to dip at 6-30 degrees at depths between 50 and 150 km beneath ten of the stations. One set of regionally continuous discontinuities in anisotropic fabric in the southeastern Rae craton dip gently southeast consistent with underthrusting beneath the Hearne and Meta Incognita-Sugluk blocks. SKS splitting recorded at twelve stations indicate patterns characteristic of two layers of anisotropic fabric. The deeper fabric as well as the single fast polarization direction recorded at other stations appears aligned with recent plate motion. The shallower fabric orientations at stations on and south of Southampton Island in northern Hudson Bay are consistent with known crustal fabric orientations formed during early (pre-1.85 Ga) stages of the Hudsonian orogeny. The shallower fabric north and west of Southampton Island has a more northerly orientation and is associated with west-dipping discontinuities that may correspond to Neoarchean accretion of the Mesoarchean north Rae domain to the central Rae domain. Crown Copyright (C) 2012 Published by Elsevier B.V. All rights reserved. |
format |
Article in Journal/Newspaper |
author |
Snyder, D. B. Berman, R. G. Kendall, J. -M. Sanborn-Barrie, M. |
author_facet |
Snyder, D. B. Berman, R. G. Kendall, J. -M. Sanborn-Barrie, M. |
author_sort |
Snyder, D. B. |
title |
Seismic anisotropy and mantle structure of the Rae craton, central Canada, from joint interpretation of SKS splitting and receiver functions |
title_short |
Seismic anisotropy and mantle structure of the Rae craton, central Canada, from joint interpretation of SKS splitting and receiver functions |
title_full |
Seismic anisotropy and mantle structure of the Rae craton, central Canada, from joint interpretation of SKS splitting and receiver functions |
title_fullStr |
Seismic anisotropy and mantle structure of the Rae craton, central Canada, from joint interpretation of SKS splitting and receiver functions |
title_full_unstemmed |
Seismic anisotropy and mantle structure of the Rae craton, central Canada, from joint interpretation of SKS splitting and receiver functions |
title_sort |
seismic anisotropy and mantle structure of the rae craton, central canada, from joint interpretation of sks splitting and receiver functions |
publishDate |
2013 |
url |
https://hdl.handle.net/1983/99052e86-09dd-41a0-aafd-a18297dbd3d3 https://research-information.bris.ac.uk/en/publications/99052e86-09dd-41a0-aafd-a18297dbd3d3 https://doi.org/10.1016/j.precamres.2012.03.003 |
long_lat |
ENVELOPE(-86.899,-86.899,68.268,68.268) ENVELOPE(-116.053,-116.053,62.834,62.834) ENVELOPE(-84.501,-84.501,64.463,64.463) |
geographic |
Baffin Island Canada Committee Bay Hudson Hudson Bay Nunavut Rae Southampton Island |
geographic_facet |
Baffin Island Canada Committee Bay Hudson Hudson Bay Nunavut Rae Southampton Island |
genre |
Baffin Island Baffin Committee Bay Hudson Bay Nunavut Southampton Island |
genre_facet |
Baffin Island Baffin Committee Bay Hudson Bay Nunavut Southampton Island |
op_source |
Snyder , D B , Berman , R G , Kendall , J -M & Sanborn-Barrie , M 2013 , ' Seismic anisotropy and mantle structure of the Rae craton, central Canada, from joint interpretation of SKS splitting and receiver functions ' , Precambrian Research , vol. 232 , pp. 189-208 . https://doi.org/10.1016/j.precamres.2012.03.003 |
op_rights |
info:eu-repo/semantics/restrictedAccess |
op_doi |
https://doi.org/10.1016/j.precamres.2012.03.003 |
container_title |
Precambrian Research |
container_volume |
232 |
container_start_page |
189 |
op_container_end_page |
208 |
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1789330421232697344 |