Pb, Nd, and Sr isotope mapping of Grenville‐age crustal provinces in Rodinia
New Pb, Nd, and Sr isotope data are presented for geochemically similar, ∼1.1–1.2 Ga, granitoids and tonalitic‐granitic orthogneisses from Antarctica, southern Africa, and the Falkland Islands and adjoining plateau, areas originally within the supercontinents of Rodinia and Gondwana. These data supp...
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University of Chicago
1998
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Online Access: | http://nora.nerc.ac.uk/id/eprint/505027/ https://doi.org/10.1086/516051 |
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ftnerc:oai:nora.nerc.ac.uk:505027 2023-05-15T13:48:08+02:00 Pb, Nd, and Sr isotope mapping of Grenville‐age crustal provinces in Rodinia Wareham, C. D. Pankhurst, R. J. Thomas, R. J. Storey, B. C. Grantham, G. H. Jacobs, J. Eglington, B. M. 1998 http://nora.nerc.ac.uk/id/eprint/505027/ https://doi.org/10.1086/516051 unknown University of Chicago Wareham, C. D.; Pankhurst, R. J.; Thomas, R. J.; Storey, B. C.; Grantham, G. H.; Jacobs, J.; Eglington, B. M. 1998 Pb, Nd, and Sr isotope mapping of Grenville‐age crustal provinces in Rodinia. The Journal of Geology, 106 (6). 647-660. https://doi.org/10.1086/516051 <https://doi.org/10.1086/516051> Publication - Article PeerReviewed 1998 ftnerc https://doi.org/10.1086/516051 2023-02-04T19:38:42Z New Pb, Nd, and Sr isotope data are presented for geochemically similar, ∼1.1–1.2 Ga, granitoids and tonalitic‐granitic orthogneisses from Antarctica, southern Africa, and the Falkland Islands and adjoining plateau, areas originally within the supercontinents of Rodinia and Gondwana. These data support contentions for the presence of a Mesoproterozoic (∼1.2 Ga) destructive plate margin running from Namaqua‐Natal (southern Africa), through the displaced microplates of the Falkland Plateau and Falkland Islands, the Haag Nunatak crustal block (West Antarctica) and into western Dronning Maud Land (East Antarctica). The bulk of these granitoids represent juvenile Mesoproterozoic additions to the crust, except for in parts of East Antarctica (i.e., the Sverdrupfjella) where older (Paleoproterozoic or Archean) crust was involved in granitoid generation. Our isotope data permit plate reconstructions in which southern Africa, East Antarctica, and the Falkland Islands and plateau were adjacent within Rodinia. Article in Journal/Newspaper Antarc* Antarctica Dronning Maud Land East Antarctica West Antarctica Natural Environment Research Council: NERC Open Research Archive East Antarctica Dronning Maud Land West Antarctica Falkland Plateau ENVELOPE(-50.000,-50.000,-51.000,-51.000) Haag ENVELOPE(-79.000,-79.000,-77.667,-77.667) Sverdrupfjella ENVELOPE(0.583,0.583,-72.700,-72.700) The Journal of Geology 106 6 647 660 |
institution |
Open Polar |
collection |
Natural Environment Research Council: NERC Open Research Archive |
op_collection_id |
ftnerc |
language |
unknown |
description |
New Pb, Nd, and Sr isotope data are presented for geochemically similar, ∼1.1–1.2 Ga, granitoids and tonalitic‐granitic orthogneisses from Antarctica, southern Africa, and the Falkland Islands and adjoining plateau, areas originally within the supercontinents of Rodinia and Gondwana. These data support contentions for the presence of a Mesoproterozoic (∼1.2 Ga) destructive plate margin running from Namaqua‐Natal (southern Africa), through the displaced microplates of the Falkland Plateau and Falkland Islands, the Haag Nunatak crustal block (West Antarctica) and into western Dronning Maud Land (East Antarctica). The bulk of these granitoids represent juvenile Mesoproterozoic additions to the crust, except for in parts of East Antarctica (i.e., the Sverdrupfjella) where older (Paleoproterozoic or Archean) crust was involved in granitoid generation. Our isotope data permit plate reconstructions in which southern Africa, East Antarctica, and the Falkland Islands and plateau were adjacent within Rodinia. |
format |
Article in Journal/Newspaper |
author |
Wareham, C. D. Pankhurst, R. J. Thomas, R. J. Storey, B. C. Grantham, G. H. Jacobs, J. Eglington, B. M. |
spellingShingle |
Wareham, C. D. Pankhurst, R. J. Thomas, R. J. Storey, B. C. Grantham, G. H. Jacobs, J. Eglington, B. M. Pb, Nd, and Sr isotope mapping of Grenville‐age crustal provinces in Rodinia |
author_facet |
Wareham, C. D. Pankhurst, R. J. Thomas, R. J. Storey, B. C. Grantham, G. H. Jacobs, J. Eglington, B. M. |
author_sort |
Wareham, C. D. |
title |
Pb, Nd, and Sr isotope mapping of Grenville‐age crustal provinces in Rodinia |
title_short |
Pb, Nd, and Sr isotope mapping of Grenville‐age crustal provinces in Rodinia |
title_full |
Pb, Nd, and Sr isotope mapping of Grenville‐age crustal provinces in Rodinia |
title_fullStr |
Pb, Nd, and Sr isotope mapping of Grenville‐age crustal provinces in Rodinia |
title_full_unstemmed |
Pb, Nd, and Sr isotope mapping of Grenville‐age crustal provinces in Rodinia |
title_sort |
pb, nd, and sr isotope mapping of grenville‐age crustal provinces in rodinia |
publisher |
University of Chicago |
publishDate |
1998 |
url |
http://nora.nerc.ac.uk/id/eprint/505027/ https://doi.org/10.1086/516051 |
long_lat |
ENVELOPE(-50.000,-50.000,-51.000,-51.000) ENVELOPE(-79.000,-79.000,-77.667,-77.667) ENVELOPE(0.583,0.583,-72.700,-72.700) |
geographic |
East Antarctica Dronning Maud Land West Antarctica Falkland Plateau Haag Sverdrupfjella |
geographic_facet |
East Antarctica Dronning Maud Land West Antarctica Falkland Plateau Haag Sverdrupfjella |
genre |
Antarc* Antarctica Dronning Maud Land East Antarctica West Antarctica |
genre_facet |
Antarc* Antarctica Dronning Maud Land East Antarctica West Antarctica |
op_relation |
Wareham, C. D.; Pankhurst, R. J.; Thomas, R. J.; Storey, B. C.; Grantham, G. H.; Jacobs, J.; Eglington, B. M. 1998 Pb, Nd, and Sr isotope mapping of Grenville‐age crustal provinces in Rodinia. The Journal of Geology, 106 (6). 647-660. https://doi.org/10.1086/516051 <https://doi.org/10.1086/516051> |
op_doi |
https://doi.org/10.1086/516051 |
container_title |
The Journal of Geology |
container_volume |
106 |
container_issue |
6 |
container_start_page |
647 |
op_container_end_page |
660 |
_version_ |
1766248744762736640 |