Nature and geodynamics of Grenville-age orogens in Norway and Dronning Maud Land (East Antarctica) during the assembly of Rodinia: insights into the lateral terminations of the greater Grenville Orogen

The Grenville Orogeny represents a globally pervasive tectonothermal event resulting in the amalgamation of the supercontinent Rodinia between ca. 1.3 and 1.0 Ga. The Grenville Orogen appears to be a continuous collisional orogen connecting Laurentia, Amazonia, Baltica and Kalahari and is generally...

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Main Author: Wang, Cheng-Cheng
Format: Doctoral or Postdoctoral Thesis
Language:English
Published: The University of Bergen 2022
Subjects:
Dronning Maud Land
East Antarctica
Norway
Antarc*
Antarctica
DML
Online Access:https://hdl.handle.net/11250/2987671
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collection University of Bergen: Bergen Open Research Archive (BORA-UiB)
op_collection_id ftunivbergen
language English
description The Grenville Orogeny represents a globally pervasive tectonothermal event resulting in the amalgamation of the supercontinent Rodinia between ca. 1.3 and 1.0 Ga. The Grenville Orogen appears to be a continuous collisional orogen connecting Laurentia, Amazonia, Baltica and Kalahari and is generally compared to the modern Himalaya-Alpine orogenic system. Its eastern lateral termination is seen in the Sveconorwegian orogen in Baltica, while on the extreme other end, the Namaqua–Natal–Maud orogenic system, on the periphery of the Proto-Kalahari Craton, represents the western lateral termination along the conjugate Kalahari-Laurentia margin. This study focuses on the Grenville-age orogenic history of the Maud Belt, East Antarctica, and the Sveconorwegian orogen exposed in Caledonian nappe windows, West Norway, with an aim to provide a potentially comprehensive understanding of spatial terminations of the Grenville Orogen with comparison to its modern analogues. The specific goals are (1) to figure out the tectonic evolution and develop a refined tectonic model of the Maud Belt, and thus shed light on the orogenic style of the Grenville-age orogenic system along the margin of the Proto-Kalahari Craton; (2) to determine the extent and distribution of the Sveconorwegian crust, and to test a continental collision vs. accretionary model for the formation and evolution of the Sveconorwegian orogen. These aims are addressed by conducting large-scale regional investigations on geochronology and isotopic (radiogenic and stable) compositions of magmatism and high-grade metamorphism. It has been proposed that the formation of the Namaqua-Natal belt is related to the process of continental collision between Laurentia and the Proto-Kalahari Craton, however, the tectonics of the Maud Belt, which is located perpendicular to the Namaqua-Natal belt, were poorly understood so far. In this study, new zircon U–Pb–Hf–O isotopic data along a regional profile from western to eastern Dronning Maud Land (DML) and the comparison to the Natal ...
format Doctoral or Postdoctoral Thesis
author Wang, Cheng-Cheng
spellingShingle Wang, Cheng-Cheng
Nature and geodynamics of Grenville-age orogens in Norway and Dronning Maud Land (East Antarctica) during the assembly of Rodinia: insights into the lateral terminations of the greater Grenville Orogen
author_facet Wang, Cheng-Cheng
author_sort Wang, Cheng-Cheng
title Nature and geodynamics of Grenville-age orogens in Norway and Dronning Maud Land (East Antarctica) during the assembly of Rodinia: insights into the lateral terminations of the greater Grenville Orogen
title_short Nature and geodynamics of Grenville-age orogens in Norway and Dronning Maud Land (East Antarctica) during the assembly of Rodinia: insights into the lateral terminations of the greater Grenville Orogen
title_full Nature and geodynamics of Grenville-age orogens in Norway and Dronning Maud Land (East Antarctica) during the assembly of Rodinia: insights into the lateral terminations of the greater Grenville Orogen
title_fullStr Nature and geodynamics of Grenville-age orogens in Norway and Dronning Maud Land (East Antarctica) during the assembly of Rodinia: insights into the lateral terminations of the greater Grenville Orogen
title_full_unstemmed Nature and geodynamics of Grenville-age orogens in Norway and Dronning Maud Land (East Antarctica) during the assembly of Rodinia: insights into the lateral terminations of the greater Grenville Orogen
title_sort nature and geodynamics of grenville-age orogens in norway and dronning maud land (east antarctica) during the assembly of rodinia: insights into the lateral terminations of the greater grenville orogen
publisher The University of Bergen
publishDate 2022
url https://hdl.handle.net/11250/2987671
geographic Dronning Maud Land
East Antarctica
Norway
geographic_facet Dronning Maud Land
East Antarctica
Norway
genre Antarc*
Antarctica
DML
Dronning Maud Land
East Antarctica
genre_facet Antarc*
Antarctica
DML
Dronning Maud Land
East Antarctica
op_relation Paper I: Wang, C-C., Jacobs, J., Elburg, M.A., Läufer, A., Thomas, R.J., Elvevold, S., 2020. Grenville-age continental arc magmatism and crustal evolution in central Dronning Maud Land (East Antarctica): Zircon geochronological and Hf–O isotopic evidence. Gondwana Research 82, 108–127. The article is available in the thesis file. The article is also available at: https://doi.org/10.1016/j.gr.2019.12.004
Paper II: Wang, C-C., Wiest, J.D., Jacobs, J., Bingen, B., Whitehouse, M.J., Elburg, M.A., Sørstrand, T.S., Mikkelsen, L., Hestnes, Å., 2021. Tracing the Sveconorwegian orogen into the Caledonides of West Norway: geochronological and isotopic studies on magmatism and migmatization. Precambrian Research 362, 106301. The article is available at: https://hdl.handle.net/11250/2984626
Paper III: Jacobs, J., Mikhalsky, E., Henjes-Kunst, F., Läufer, A., Thomas, R.J., Elburg, M.A., Wang, C-C., Estrada, S., Skublov, S., 2020. Neoproterozoic geodynamic evolution of easternmost Kalahari: Constraints from U-Pb-Hf-O zircon, Sm-Nd isotope and geochemical data from the Schirmacher Oasis, East Antarctica. Precambrian Research 342, 105553. The article is available in the thesis file. The article is also available at: https://doi.org/10.1016/j.precamres.2019.105553
Paper IV: Wang, C-C., Jacobs, J., Elburg, M.A., Läufer, A., Elvevold, S., 2020. Late Neoproterozoic–Cambrian magmatism in Dronning Maud Land (East Antarctica): U– Pb zircon geochronology, isotope geochemistry and implications for Gondwana assembly. Precambrian Research 350, 105880. The article is available in the thesis file. The article is also available at: https://doi.org/10.1016/j.precamres.2020.105880
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urn:isbn:9788230860861
urn:isbn:9788230860427
https://hdl.handle.net/11250/2987671
op_rights In copyright
http://rightsstatements.org/page/InC/1.0/
Copyright the Author. All rights reserved
op_doi https://doi.org/10.1016/j.gr.2019.12.00410.1016/j.precamres.2019.10555310.1016/j.precamres.2020.105880
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spelling ftunivbergen:oai:bora.uib.no:11250/2987671 2023-05-15T13:58:44+02:00 Nature and geodynamics of Grenville-age orogens in Norway and Dronning Maud Land (East Antarctica) during the assembly of Rodinia: insights into the lateral terminations of the greater Grenville Orogen Wang, Cheng-Cheng 2022-03-14 application/pdf https://hdl.handle.net/11250/2987671 eng eng The University of Bergen Paper I: Wang, C-C., Jacobs, J., Elburg, M.A., Läufer, A., Thomas, R.J., Elvevold, S., 2020. Grenville-age continental arc magmatism and crustal evolution in central Dronning Maud Land (East Antarctica): Zircon geochronological and Hf–O isotopic evidence. Gondwana Research 82, 108–127. The article is available in the thesis file. The article is also available at: https://doi.org/10.1016/j.gr.2019.12.004 Paper II: Wang, C-C., Wiest, J.D., Jacobs, J., Bingen, B., Whitehouse, M.J., Elburg, M.A., Sørstrand, T.S., Mikkelsen, L., Hestnes, Å., 2021. Tracing the Sveconorwegian orogen into the Caledonides of West Norway: geochronological and isotopic studies on magmatism and migmatization. Precambrian Research 362, 106301. The article is available at: https://hdl.handle.net/11250/2984626 Paper III: Jacobs, J., Mikhalsky, E., Henjes-Kunst, F., Läufer, A., Thomas, R.J., Elburg, M.A., Wang, C-C., Estrada, S., Skublov, S., 2020. Neoproterozoic geodynamic evolution of easternmost Kalahari: Constraints from U-Pb-Hf-O zircon, Sm-Nd isotope and geochemical data from the Schirmacher Oasis, East Antarctica. Precambrian Research 342, 105553. The article is available in the thesis file. The article is also available at: https://doi.org/10.1016/j.precamres.2019.105553 Paper IV: Wang, C-C., Jacobs, J., Elburg, M.A., Läufer, A., Elvevold, S., 2020. Late Neoproterozoic–Cambrian magmatism in Dronning Maud Land (East Antarctica): U– Pb zircon geochronology, isotope geochemistry and implications for Gondwana assembly. Precambrian Research 350, 105880. The article is available in the thesis file. The article is also available at: https://doi.org/10.1016/j.precamres.2020.105880 container/d7/76/be/8f/d776be8f-368c-4053-bdd4-e472d08313a0 urn:isbn:9788230860861 urn:isbn:9788230860427 https://hdl.handle.net/11250/2987671 In copyright http://rightsstatements.org/page/InC/1.0/ Copyright the Author. All rights reserved Doctoral thesis 2022 ftunivbergen https://doi.org/10.1016/j.gr.2019.12.00410.1016/j.precamres.2019.10555310.1016/j.precamres.2020.105880 2023-03-14T17:42:44Z The Grenville Orogeny represents a globally pervasive tectonothermal event resulting in the amalgamation of the supercontinent Rodinia between ca. 1.3 and 1.0 Ga. The Grenville Orogen appears to be a continuous collisional orogen connecting Laurentia, Amazonia, Baltica and Kalahari and is generally compared to the modern Himalaya-Alpine orogenic system. Its eastern lateral termination is seen in the Sveconorwegian orogen in Baltica, while on the extreme other end, the Namaqua–Natal–Maud orogenic system, on the periphery of the Proto-Kalahari Craton, represents the western lateral termination along the conjugate Kalahari-Laurentia margin. This study focuses on the Grenville-age orogenic history of the Maud Belt, East Antarctica, and the Sveconorwegian orogen exposed in Caledonian nappe windows, West Norway, with an aim to provide a potentially comprehensive understanding of spatial terminations of the Grenville Orogen with comparison to its modern analogues. The specific goals are (1) to figure out the tectonic evolution and develop a refined tectonic model of the Maud Belt, and thus shed light on the orogenic style of the Grenville-age orogenic system along the margin of the Proto-Kalahari Craton; (2) to determine the extent and distribution of the Sveconorwegian crust, and to test a continental collision vs. accretionary model for the formation and evolution of the Sveconorwegian orogen. These aims are addressed by conducting large-scale regional investigations on geochronology and isotopic (radiogenic and stable) compositions of magmatism and high-grade metamorphism. It has been proposed that the formation of the Namaqua-Natal belt is related to the process of continental collision between Laurentia and the Proto-Kalahari Craton, however, the tectonics of the Maud Belt, which is located perpendicular to the Namaqua-Natal belt, were poorly understood so far. In this study, new zircon U–Pb–Hf–O isotopic data along a regional profile from western to eastern Dronning Maud Land (DML) and the comparison to the Natal ... Doctoral or Postdoctoral Thesis Antarc* Antarctica DML Dronning Maud Land East Antarctica University of Bergen: Bergen Open Research Archive (BORA-UiB) Dronning Maud Land East Antarctica Norway

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