Sm/Nd evidence for a major 1.5 Ga crust-forming event in the central Grenville province
The majority of gray gneisses from an 80 000 km2 area in the central (Quebec) Grenville province define a Sm-Nd isochron that yields an age of 1.53 ±0.07 Ga. Major element, trace element, and initial Nd isotopic data all point to a subduction-related (orogenic) source for this terrane. It is attribu...
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ftunivquebecchic:oai:constellation.uqac.ca:4550 2023-05-15T17:22:01+02:00 Sm/Nd evidence for a major 1.5 Ga crust-forming event in the central Grenville province Dickin, A.P. Higgins, Michael D. 1992-02-01 application/pdf https://constellation.uqac.ca/4550/7/Geology-1992-Grenville%20province.pdf en eng https://constellation.uqac.ca/4550/ https://doi.org/10.1130/0091-7613(1992)020<0137:SNEFAM>2.3.CO;2 https://constellation.uqac.ca/4550/7/Geology-1992-Grenville%20province.pdf Dickin A.P. et Higgins Michael D. (1992). Sm/Nd evidence for a major 1.5 Ga crust-forming event in the central Grenville province. Geology, 20, (2), p. 137-140. Sciences de la terre (géologie géographie) Article publié dans une revue avec comité d'évaluation PeerReviewed 1992 ftunivquebecchic https://doi.org/10.1130/0091-7613(1992)020<0137:SNEFAM>2.3.CO;2 2021-03-08T12:03:19Z The majority of gray gneisses from an 80 000 km2 area in the central (Quebec) Grenville province define a Sm-Nd isochron that yields an age of 1.53 ±0.07 Ga. Major element, trace element, and initial Nd isotopic data all point to a subduction-related (orogenic) source for this terrane. It is attributed to a major crustal extraction event that formed a mid-Proterozoic island arc. The age of the terrane agrees with published data from the eastern and western Grenville province in Newfoundland and Ontario, respectively. We suggest that 1.5 Ga are fragments were accreted along much of the length of the Laurentian foreland within 100 m.y. of their formation, in an event marked by widespread granitoid plutonism. Text Newfoundland Université du Québec à Chicoutimi (UQAC): Constellation |
institution |
Open Polar |
collection |
Université du Québec à Chicoutimi (UQAC): Constellation |
op_collection_id |
ftunivquebecchic |
language |
English |
topic |
Sciences de la terre (géologie géographie) |
spellingShingle |
Sciences de la terre (géologie géographie) Dickin, A.P. Higgins, Michael D. Sm/Nd evidence for a major 1.5 Ga crust-forming event in the central Grenville province |
topic_facet |
Sciences de la terre (géologie géographie) |
description |
The majority of gray gneisses from an 80 000 km2 area in the central (Quebec) Grenville province define a Sm-Nd isochron that yields an age of 1.53 ±0.07 Ga. Major element, trace element, and initial Nd isotopic data all point to a subduction-related (orogenic) source for this terrane. It is attributed to a major crustal extraction event that formed a mid-Proterozoic island arc. The age of the terrane agrees with published data from the eastern and western Grenville province in Newfoundland and Ontario, respectively. We suggest that 1.5 Ga are fragments were accreted along much of the length of the Laurentian foreland within 100 m.y. of their formation, in an event marked by widespread granitoid plutonism. |
format |
Text |
author |
Dickin, A.P. Higgins, Michael D. |
author_facet |
Dickin, A.P. Higgins, Michael D. |
author_sort |
Dickin, A.P. |
title |
Sm/Nd evidence for a major 1.5 Ga crust-forming event in the central Grenville province |
title_short |
Sm/Nd evidence for a major 1.5 Ga crust-forming event in the central Grenville province |
title_full |
Sm/Nd evidence for a major 1.5 Ga crust-forming event in the central Grenville province |
title_fullStr |
Sm/Nd evidence for a major 1.5 Ga crust-forming event in the central Grenville province |
title_full_unstemmed |
Sm/Nd evidence for a major 1.5 Ga crust-forming event in the central Grenville province |
title_sort |
sm/nd evidence for a major 1.5 ga crust-forming event in the central grenville province |
publishDate |
1992 |
url |
https://constellation.uqac.ca/4550/7/Geology-1992-Grenville%20province.pdf |
genre |
Newfoundland |
genre_facet |
Newfoundland |
op_relation |
https://constellation.uqac.ca/4550/ https://doi.org/10.1130/0091-7613(1992)020<0137:SNEFAM>2.3.CO;2 https://constellation.uqac.ca/4550/7/Geology-1992-Grenville%20province.pdf Dickin A.P. et Higgins Michael D. (1992). Sm/Nd evidence for a major 1.5 Ga crust-forming event in the central Grenville province. Geology, 20, (2), p. 137-140. |
op_doi |
https://doi.org/10.1130/0091-7613(1992)020<0137:SNEFAM>2.3.CO;2 |
_version_ |
1766108226566225920 |