Surface heat flow, crustal temperatures and mantle heat flow in the Proterozoic Trans-Hudson Orogen, Canadian Shield
International audience The Paleo-Proterozoic (1.8 Ga) Trans-Hudson Orogen (THO), of intermediate age between the Superior (2.7 Ga) and Grenville (1.0 Ga) provinces, is located near the center of the Canadian Shield. We report on new measurements of heat flow and radiogenic heat production in 30 bore...
Published in: | Journal of Geophysical Research: Solid Earth |
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Online Access: | https://hal-insu.archives-ouvertes.fr/insu-03597782 https://hal-insu.archives-ouvertes.fr/insu-03597782/document https://hal-insu.archives-ouvertes.fr/insu-03597782/file/Journal%20of%20Geophysical%20Research%20Solid%20Earth%20-%202002%20-%20Rolandone%20-%20Surface%20heat%20flow%20crustal%20temperatures%20and%20mantle%20heat.pdf https://doi.org/10.1029/2001JB000698 |
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ftunivnantes:oai:HAL:insu-03597782v1 2023-05-15T17:06:12+02:00 Surface heat flow, crustal temperatures and mantle heat flow in the Proterozoic Trans-Hudson Orogen, Canadian Shield Rolandone, F. Jaupart, C. Mareschal, J. C. Gariépy, C. Bienfait, G. Carbonne, C. Lapointe, R. Institut de Physique du Globe de Paris (IPGP) Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris Diderot - Paris 7 (UPD7)-Université de La Réunion (UR)-Institut de Physique du Globe de Paris (IPG Paris)-Centre National de la Recherche Scientifique (CNRS) 2002 https://hal-insu.archives-ouvertes.fr/insu-03597782 https://hal-insu.archives-ouvertes.fr/insu-03597782/document https://hal-insu.archives-ouvertes.fr/insu-03597782/file/Journal%20of%20Geophysical%20Research%20Solid%20Earth%20-%202002%20-%20Rolandone%20-%20Surface%20heat%20flow%20crustal%20temperatures%20and%20mantle%20heat.pdf https://doi.org/10.1029/2001JB000698 en eng HAL CCSD American Geophysical Union info:eu-repo/semantics/altIdentifier/doi/10.1029/2001JB000698 insu-03597782 https://hal-insu.archives-ouvertes.fr/insu-03597782 https://hal-insu.archives-ouvertes.fr/insu-03597782/document https://hal-insu.archives-ouvertes.fr/insu-03597782/file/Journal%20of%20Geophysical%20Research%20Solid%20Earth%20-%202002%20-%20Rolandone%20-%20Surface%20heat%20flow%20crustal%20temperatures%20and%20mantle%20heat.pdf BIBCODE: 2002JGRB.107.2341R doi:10.1029/2001JB000698 http://hal.archives-ouvertes.fr/licences/copyright/ info:eu-repo/semantics/OpenAccess ISSN: 2169-9313 EISSN: 2169-9356 Journal of Geophysical Research : Solid Earth https://hal-insu.archives-ouvertes.fr/insu-03597782 Journal of Geophysical Research : Solid Earth, 2002, 107, ⟨10.1029/2001JB000698⟩ [SDU]Sciences of the Universe [physics] info:eu-repo/semantics/article Journal articles 2002 ftunivnantes https://doi.org/10.1029/2001JB000698 2023-02-08T03:07:02Z International audience The Paleo-Proterozoic (1.8 Ga) Trans-Hudson Orogen (THO), of intermediate age between the Superior (2.7 Ga) and Grenville (1.0 Ga) provinces, is located near the center of the Canadian Shield. We report on new measurements of heat flow and radiogenic heat production in 30 boreholes at 17 locations in this province. With these data, reliable values of heat flow and heat production are available at 45 sites in the THO. The mean and standard deviation of heat flow values are 42 ± 9 mW m -2 . In this province, distinctive geological domains are associated with specific heat flow distributions. The heat flow pattern follows the surface geology with a central area of low values over an ancient back arc basin (Kisseynew) and an ancient island arc (Lynn Lake Belt) made of depleted juvenile rocks. Higher heat flow values found in peripheral belts are associated with recycled Archean crust. Within the Canadian Shield, there is no significant variation in heat flow as a function of age between provinces spanning about 2 Gyr. There is no geographic trend in heat flow across the Canadian Shield from the THO to the Labrador Sea. Low heat flow areas where the crustal structure is well-known are used to determine an upper bound of 16 mW m -2 for the mantle heat flow. Present and paleogeotherms are calculated for a high heat flow area in the Thompson metasedimentary belt. The condition that melting temperatures were not reached in Proterozoic times yields a lower bound of 11-12 mW m -2 for the mantle heat flow. Article in Journal/Newspaper Labrador Sea Université de Nantes: HAL-UNIV-NANTES Hudson Journal of Geophysical Research: Solid Earth 107 B12 ETG 7-1 ETG 7-19 |
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collection |
Université de Nantes: HAL-UNIV-NANTES |
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ftunivnantes |
language |
English |
topic |
[SDU]Sciences of the Universe [physics] |
spellingShingle |
[SDU]Sciences of the Universe [physics] Rolandone, F. Jaupart, C. Mareschal, J. C. Gariépy, C. Bienfait, G. Carbonne, C. Lapointe, R. Surface heat flow, crustal temperatures and mantle heat flow in the Proterozoic Trans-Hudson Orogen, Canadian Shield |
topic_facet |
[SDU]Sciences of the Universe [physics] |
description |
International audience The Paleo-Proterozoic (1.8 Ga) Trans-Hudson Orogen (THO), of intermediate age between the Superior (2.7 Ga) and Grenville (1.0 Ga) provinces, is located near the center of the Canadian Shield. We report on new measurements of heat flow and radiogenic heat production in 30 boreholes at 17 locations in this province. With these data, reliable values of heat flow and heat production are available at 45 sites in the THO. The mean and standard deviation of heat flow values are 42 ± 9 mW m -2 . In this province, distinctive geological domains are associated with specific heat flow distributions. The heat flow pattern follows the surface geology with a central area of low values over an ancient back arc basin (Kisseynew) and an ancient island arc (Lynn Lake Belt) made of depleted juvenile rocks. Higher heat flow values found in peripheral belts are associated with recycled Archean crust. Within the Canadian Shield, there is no significant variation in heat flow as a function of age between provinces spanning about 2 Gyr. There is no geographic trend in heat flow across the Canadian Shield from the THO to the Labrador Sea. Low heat flow areas where the crustal structure is well-known are used to determine an upper bound of 16 mW m -2 for the mantle heat flow. Present and paleogeotherms are calculated for a high heat flow area in the Thompson metasedimentary belt. The condition that melting temperatures were not reached in Proterozoic times yields a lower bound of 11-12 mW m -2 for the mantle heat flow. |
author2 |
Institut de Physique du Globe de Paris (IPGP) Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris Diderot - Paris 7 (UPD7)-Université de La Réunion (UR)-Institut de Physique du Globe de Paris (IPG Paris)-Centre National de la Recherche Scientifique (CNRS) |
format |
Article in Journal/Newspaper |
author |
Rolandone, F. Jaupart, C. Mareschal, J. C. Gariépy, C. Bienfait, G. Carbonne, C. Lapointe, R. |
author_facet |
Rolandone, F. Jaupart, C. Mareschal, J. C. Gariépy, C. Bienfait, G. Carbonne, C. Lapointe, R. |
author_sort |
Rolandone, F. |
title |
Surface heat flow, crustal temperatures and mantle heat flow in the Proterozoic Trans-Hudson Orogen, Canadian Shield |
title_short |
Surface heat flow, crustal temperatures and mantle heat flow in the Proterozoic Trans-Hudson Orogen, Canadian Shield |
title_full |
Surface heat flow, crustal temperatures and mantle heat flow in the Proterozoic Trans-Hudson Orogen, Canadian Shield |
title_fullStr |
Surface heat flow, crustal temperatures and mantle heat flow in the Proterozoic Trans-Hudson Orogen, Canadian Shield |
title_full_unstemmed |
Surface heat flow, crustal temperatures and mantle heat flow in the Proterozoic Trans-Hudson Orogen, Canadian Shield |
title_sort |
surface heat flow, crustal temperatures and mantle heat flow in the proterozoic trans-hudson orogen, canadian shield |
publisher |
HAL CCSD |
publishDate |
2002 |
url |
https://hal-insu.archives-ouvertes.fr/insu-03597782 https://hal-insu.archives-ouvertes.fr/insu-03597782/document https://hal-insu.archives-ouvertes.fr/insu-03597782/file/Journal%20of%20Geophysical%20Research%20Solid%20Earth%20-%202002%20-%20Rolandone%20-%20Surface%20heat%20flow%20crustal%20temperatures%20and%20mantle%20heat.pdf https://doi.org/10.1029/2001JB000698 |
geographic |
Hudson |
geographic_facet |
Hudson |
genre |
Labrador Sea |
genre_facet |
Labrador Sea |
op_source |
ISSN: 2169-9313 EISSN: 2169-9356 Journal of Geophysical Research : Solid Earth https://hal-insu.archives-ouvertes.fr/insu-03597782 Journal of Geophysical Research : Solid Earth, 2002, 107, ⟨10.1029/2001JB000698⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1029/2001JB000698 insu-03597782 https://hal-insu.archives-ouvertes.fr/insu-03597782 https://hal-insu.archives-ouvertes.fr/insu-03597782/document https://hal-insu.archives-ouvertes.fr/insu-03597782/file/Journal%20of%20Geophysical%20Research%20Solid%20Earth%20-%202002%20-%20Rolandone%20-%20Surface%20heat%20flow%20crustal%20temperatures%20and%20mantle%20heat.pdf BIBCODE: 2002JGRB.107.2341R doi:10.1029/2001JB000698 |
op_rights |
http://hal.archives-ouvertes.fr/licences/copyright/ info:eu-repo/semantics/OpenAccess |
op_doi |
https://doi.org/10.1029/2001JB000698 |
container_title |
Journal of Geophysical Research: Solid Earth |
container_volume |
107 |
container_issue |
B12 |
container_start_page |
ETG 7-1 |
op_container_end_page |
ETG 7-19 |
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1766061239918657536 |