U–Pb Age of the Stanley Brook Granite, Grand Manan Island, New Brunswick
The Stanley Brook Granite on Grand Manan Island has yielded an Early Cambrian U-Pb zircon age of 535 ± 2 Ma. The granite was emplaced into sedimentary rocks of the Flagg Cove Formation of the Castalia Group, proving that the latter is no younger than Early Cambrian. Previous dating of detrital zirco...
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Atlantic Geoscience Society
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ftuninewbrunojs:oai:ojs.journals.lib.unb.ca:article/18227 2023-05-15T18:07:24+02:00 U–Pb Age of the Stanley Brook Granite, Grand Manan Island, New Brunswick Fyffe, Leslie R. van Staal, Cees R. Valverde-Vaquero, Pablo McNicoll, Vicki J. 2011-04-15 text/html application/pdf https://journals.lib.unb.ca/index.php/ag/article/view/atlgeol.2011.001 eng eng Atlantic Geoscience Society https://journals.lib.unb.ca/index.php/ag/article/view/atlgeol.2011.001/atlgeol.2011.001html https://journals.lib.unb.ca/index.php/ag/article/view/atlgeol.2011.001/atlgeol.2011.001pdf https://journals.lib.unb.ca/index.php/ag/article/view/atlgeol.2011.001 Copyright (c) 2015 Atlantic Geology Atlantic Geoscience; Vol. 47 (2011); Pages 1 - 8 2564-2987 Geochronology Granite Grand Manan New Brunswicki info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion research-article 2011 ftuninewbrunojs 2022-07-11T11:42:06Z The Stanley Brook Granite on Grand Manan Island has yielded an Early Cambrian U-Pb zircon age of 535 ± 2 Ma. The granite was emplaced into sedimentary rocks of the Flagg Cove Formation of the Castalia Group, proving that the latter is no younger than Early Cambrian. Previous dating of detrital zircons from the Flagg Cove Formation limits its maximum depositional age to be no older than 574 ± 7 Ma. The intrusive age of the Stanley Brook Granite is essentially identical to the 539 ± 3 Ma age obtained previously from dacitic tuff of the Priest Cove Formation, suggesting a comagmatic relationship between the two. The contact between the Flagg Cove and Priest Cove formations is invariably faulted. However, the consanguineous relationship between the Priest Cove Formation and Stanley Brook Granite suggests that the Priest Cove Formation was deposited on the Flagg Cove Formation. This proposed stratigraphic relationship supports the interpretation that the tuffaceous and volcaniclastic sedimentary rocks of the Priest Cove Formation represent a distal facies of the mafic flows and fragmental volcanic rocks of the Ross Island Formation. The age of the Stanley Brook Granite is consistent with the interpretation that Mesoproterozoic (?) to Neoproterozoic platformal carbonate rocks of the Brookville terrane represent basement to Neoproterozoic volcanic rocks of the New River terrane. RÉSUMÉ L’âge U-Pb sur zircon du granite du ruisseau Stanley, sur l’île Grand Manan, se situerait à environ 535 ± 2 Ma et remonterait au début du Cambrien. Ce granite a été mis en place dans les roches sédimentaires de la Formation de Flagg Cove du groupe de Castalia, ce qui établirait que cette dernière formation date tout au plus du début du Cam-brien. Les travaux de datation précédents des zircons détritiques de la Formation de Flagg Cove ont fixé l’âge maximal de la sédimentation à 574 ± 7 Ma, tout au plus. Pour l’essentiel, l’âge de l’intrusion du granite du ruisseau Stanley correspond à l’âge de 539 ± 3 Ma déjà déterminé pour le tuf ... Article in Journal/Newspaper Ross Island University of New Brunswick: Centre for Digital Scholarship Journals Manan ENVELOPE(8.748,8.748,62.793,62.793) Priest Cove ENVELOPE(-55.881,-55.881,50.917,50.917) Ross Island Atlantic Geology 47 0 1 8 |
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Open Polar |
collection |
University of New Brunswick: Centre for Digital Scholarship Journals |
op_collection_id |
ftuninewbrunojs |
language |
English |
topic |
Geochronology Granite Grand Manan New Brunswicki |
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Geochronology Granite Grand Manan New Brunswicki Fyffe, Leslie R. van Staal, Cees R. Valverde-Vaquero, Pablo McNicoll, Vicki J. U–Pb Age of the Stanley Brook Granite, Grand Manan Island, New Brunswick |
topic_facet |
Geochronology Granite Grand Manan New Brunswicki |
description |
The Stanley Brook Granite on Grand Manan Island has yielded an Early Cambrian U-Pb zircon age of 535 ± 2 Ma. The granite was emplaced into sedimentary rocks of the Flagg Cove Formation of the Castalia Group, proving that the latter is no younger than Early Cambrian. Previous dating of detrital zircons from the Flagg Cove Formation limits its maximum depositional age to be no older than 574 ± 7 Ma. The intrusive age of the Stanley Brook Granite is essentially identical to the 539 ± 3 Ma age obtained previously from dacitic tuff of the Priest Cove Formation, suggesting a comagmatic relationship between the two. The contact between the Flagg Cove and Priest Cove formations is invariably faulted. However, the consanguineous relationship between the Priest Cove Formation and Stanley Brook Granite suggests that the Priest Cove Formation was deposited on the Flagg Cove Formation. This proposed stratigraphic relationship supports the interpretation that the tuffaceous and volcaniclastic sedimentary rocks of the Priest Cove Formation represent a distal facies of the mafic flows and fragmental volcanic rocks of the Ross Island Formation. The age of the Stanley Brook Granite is consistent with the interpretation that Mesoproterozoic (?) to Neoproterozoic platformal carbonate rocks of the Brookville terrane represent basement to Neoproterozoic volcanic rocks of the New River terrane. RÉSUMÉ L’âge U-Pb sur zircon du granite du ruisseau Stanley, sur l’île Grand Manan, se situerait à environ 535 ± 2 Ma et remonterait au début du Cambrien. Ce granite a été mis en place dans les roches sédimentaires de la Formation de Flagg Cove du groupe de Castalia, ce qui établirait que cette dernière formation date tout au plus du début du Cam-brien. Les travaux de datation précédents des zircons détritiques de la Formation de Flagg Cove ont fixé l’âge maximal de la sédimentation à 574 ± 7 Ma, tout au plus. Pour l’essentiel, l’âge de l’intrusion du granite du ruisseau Stanley correspond à l’âge de 539 ± 3 Ma déjà déterminé pour le tuf ... |
format |
Article in Journal/Newspaper |
author |
Fyffe, Leslie R. van Staal, Cees R. Valverde-Vaquero, Pablo McNicoll, Vicki J. |
author_facet |
Fyffe, Leslie R. van Staal, Cees R. Valverde-Vaquero, Pablo McNicoll, Vicki J. |
author_sort |
Fyffe, Leslie R. |
title |
U–Pb Age of the Stanley Brook Granite, Grand Manan Island, New Brunswick |
title_short |
U–Pb Age of the Stanley Brook Granite, Grand Manan Island, New Brunswick |
title_full |
U–Pb Age of the Stanley Brook Granite, Grand Manan Island, New Brunswick |
title_fullStr |
U–Pb Age of the Stanley Brook Granite, Grand Manan Island, New Brunswick |
title_full_unstemmed |
U–Pb Age of the Stanley Brook Granite, Grand Manan Island, New Brunswick |
title_sort |
u–pb age of the stanley brook granite, grand manan island, new brunswick |
publisher |
Atlantic Geoscience Society |
publishDate |
2011 |
url |
https://journals.lib.unb.ca/index.php/ag/article/view/atlgeol.2011.001 |
long_lat |
ENVELOPE(8.748,8.748,62.793,62.793) ENVELOPE(-55.881,-55.881,50.917,50.917) |
geographic |
Manan Priest Cove Ross Island |
geographic_facet |
Manan Priest Cove Ross Island |
genre |
Ross Island |
genre_facet |
Ross Island |
op_source |
Atlantic Geoscience; Vol. 47 (2011); Pages 1 - 8 2564-2987 |
op_relation |
https://journals.lib.unb.ca/index.php/ag/article/view/atlgeol.2011.001/atlgeol.2011.001html https://journals.lib.unb.ca/index.php/ag/article/view/atlgeol.2011.001/atlgeol.2011.001pdf https://journals.lib.unb.ca/index.php/ag/article/view/atlgeol.2011.001 |
op_rights |
Copyright (c) 2015 Atlantic Geology |
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Atlantic Geology |
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47 |
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1766179501913407488 |