Tectonic constraints on 1.3 similar to 1.2 Ga final breakup of Columbia supercontinent from a giant radiating dyke swarm

The 1.3- 1.2 Ga fan- shaped Mackenzie dyke swarm and other similar- aged dyke swarms in the Canadian Shield constitute the subswarms of a Late Mesoproterozoic giant radiating swarm. The Late Mesoproterozoic mafic dyke swarms in Australia and East Antarctica might constitute additional subswarms of t...

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Bibliographic Details
Published in:Gondwana Research
Main Authors: Hou, Guiting, Santosh, M., Qian, Xianglin, Lister, Gordon S., Li, Jianghai
Other Authors: Hou, GT (reprint author), Peking Univ, Key Lab Orogen Belts & Crustal Evolut, Sch Earth & Space Sci, Beijing 100871, Peoples R China., Peking Univ, Key Lab Orogen Belts & Crustal Evolut, Sch Earth & Space Sci, Beijing 100871, Peoples R China., Australian Natl Univ, Res Sch Earth Sci, Canberra, ACT 0200, Australia., Kochi Univ, Fac Sci, Kochi 7808520, Japan.
Format: Journal/Newspaper
Language:English
Published: gondwana research 2008
Subjects:
Late Mesoproterozoic
giant radiating mafic dyke swarm
final breakup
tectonics
Columbia supercontinent
MESOPROTEROZOIC SUPERCONTINENT
SOUTH GREENLAND
IGNEOUS PROVINCE
UKRAINIAN SHIELD
EAST ANTARCTICA
GARDAR PROVINCE
MAFIC DYKES
PALEOMAGNETISM
CONFIGURATION
MAGMATISM
East Antarctica
Greenland
Antarc*
Antarctica
Online Access:https://hdl.handle.net/20.500.11897/155977
https://doi.org/10.1016/j.gr.2008.03.005
Description
Summary:The 1.3- 1.2 Ga fan- shaped Mackenzie dyke swarm and other similar- aged dyke swarms in the Canadian Shield constitute the subswarms of a Late Mesoproterozoic giant radiating swarm. The Late Mesoproterozoic mafic dyke swarms in Australia and East Antarctica might constitute additional subswarms of the giant radiating dyke swarm. A possible Late Mesoproterozoic mantle plume is placed at the focal area of the giant radiating dyke swarm between North America and the landmass (West Australia- East Antarctica). This mantle plume triggered the continuous extension at ca. 1.3-1.2 Ga, which extended into much of Columbia and led to the final fragmentation of the Columbia supercontinent. Crown Copyright (C) 2008 Published by Elsevier B.V. on behalf of International Association for Gondwana Research. All rights reserved. http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000258812500021&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=8e1609b174ce4e31116a60747a720701 Geosciences, Multidisciplinary SCI(E) 59 LETTER 3 561-566 14

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