New U–Pb geochronologic and palaeomagnetic constraints on the late Palaeoproterozoic Hartley magmatic event : evidence for a potential large igneous province in the Kaapvaal Craton during Kalahari assembly, South Africa
The volcanic Hartley Formation (part of the Olifantshoek Supergroup, which is dominated by red bed successions) in South Africa recorded depositional and tectonic conditions along the western Kaapvaal Craton during the late Palaeoproterozoic. It formed in association with red bed deposition elsewher...
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Taylor & Francis
2016
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Online Access: | https://lup.lub.lu.se/record/fb0a5552-b741-48ee-a1f4-201cf3783788 https://doi.org/10.1080/11035897.2015.1124917 |
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ftulundlup:oai:lup.lub.lu.se:fb0a5552-b741-48ee-a1f4-201cf3783788 2024-04-21T08:02:21+00:00 New U–Pb geochronologic and palaeomagnetic constraints on the late Palaeoproterozoic Hartley magmatic event : evidence for a potential large igneous province in the Kaapvaal Craton during Kalahari assembly, South Africa Alebouyeh Semami, Farnaz de Kock, Michiel Söderlund, Ulf Gumsley, Ashley da Silva, Richard Beukes, Nicolas Armstrong, Richard 2016-01-02 https://lup.lub.lu.se/record/fb0a5552-b741-48ee-a1f4-201cf3783788 https://doi.org/10.1080/11035897.2015.1124917 eng eng Taylor & Francis https://lup.lub.lu.se/record/fb0a5552-b741-48ee-a1f4-201cf3783788 http://dx.doi.org/10.1080/11035897.2015.1124917 scopus:84959093409 wos:000371812700012 GFF; 138(1), pp 164-182 (2016) ISSN: 1103-5897 Geology apparent polar wander path dyke swarm geochronology large igneous province Orosirian period palaeomagnetism contributiontojournal/article info:eu-repo/semantics/article text 2016 ftulundlup https://doi.org/10.1080/11035897.2015.1124917 2024-03-27T15:02:47Z The volcanic Hartley Formation (part of the Olifantshoek Supergroup, which is dominated by red bed successions) in South Africa recorded depositional and tectonic conditions along the western Kaapvaal Craton during the late Palaeoproterozoic. It formed in association with red bed deposition elsewhere in the cratonic hinterland and along the craton’s northern margin. However, the exact correlation of the Olifantshoek Supergroup with these other red-bed successions is hindered by poor geochronological constraints. Herein, we refine the age and palaeopole of the Hartley Formation, and provide geochronological constraints for large-scale 1.93–1.91 Ga bimodal magmatism on the Kaapvaal Craton (herein named the Hartley large igneous province). We present new age constraints for the mafic and felsic phases of this event at 1923 ± 6 Ma and 1920 ± 4 Ma, respectively, which includes the first reported age dating of the Tsineng Dyke Swarm that has been linked to Hartley volcanism. A mean 1.93–1.91 Ga palaeomagnetic pole for the Hartley large igneous province at 22.7°N, 328.6°E with A95 = 11.7° represents a significant improvement on a previously published virtual geomagnetic pole. This improved pole is used to refine the late Palaeoproterozoic apparent polar wander path of the Kaapvaal Craton. This can assist in correlation of red-bed successions in southern Africa. Article in Journal/Newspaper Geomagnetic Pole Lund University Publications (LUP) GFF 138 1 164 182 |
institution |
Open Polar |
collection |
Lund University Publications (LUP) |
op_collection_id |
ftulundlup |
language |
English |
topic |
Geology apparent polar wander path dyke swarm geochronology large igneous province Orosirian period palaeomagnetism |
spellingShingle |
Geology apparent polar wander path dyke swarm geochronology large igneous province Orosirian period palaeomagnetism Alebouyeh Semami, Farnaz de Kock, Michiel Söderlund, Ulf Gumsley, Ashley da Silva, Richard Beukes, Nicolas Armstrong, Richard New U–Pb geochronologic and palaeomagnetic constraints on the late Palaeoproterozoic Hartley magmatic event : evidence for a potential large igneous province in the Kaapvaal Craton during Kalahari assembly, South Africa |
topic_facet |
Geology apparent polar wander path dyke swarm geochronology large igneous province Orosirian period palaeomagnetism |
description |
The volcanic Hartley Formation (part of the Olifantshoek Supergroup, which is dominated by red bed successions) in South Africa recorded depositional and tectonic conditions along the western Kaapvaal Craton during the late Palaeoproterozoic. It formed in association with red bed deposition elsewhere in the cratonic hinterland and along the craton’s northern margin. However, the exact correlation of the Olifantshoek Supergroup with these other red-bed successions is hindered by poor geochronological constraints. Herein, we refine the age and palaeopole of the Hartley Formation, and provide geochronological constraints for large-scale 1.93–1.91 Ga bimodal magmatism on the Kaapvaal Craton (herein named the Hartley large igneous province). We present new age constraints for the mafic and felsic phases of this event at 1923 ± 6 Ma and 1920 ± 4 Ma, respectively, which includes the first reported age dating of the Tsineng Dyke Swarm that has been linked to Hartley volcanism. A mean 1.93–1.91 Ga palaeomagnetic pole for the Hartley large igneous province at 22.7°N, 328.6°E with A95 = 11.7° represents a significant improvement on a previously published virtual geomagnetic pole. This improved pole is used to refine the late Palaeoproterozoic apparent polar wander path of the Kaapvaal Craton. This can assist in correlation of red-bed successions in southern Africa. |
format |
Article in Journal/Newspaper |
author |
Alebouyeh Semami, Farnaz de Kock, Michiel Söderlund, Ulf Gumsley, Ashley da Silva, Richard Beukes, Nicolas Armstrong, Richard |
author_facet |
Alebouyeh Semami, Farnaz de Kock, Michiel Söderlund, Ulf Gumsley, Ashley da Silva, Richard Beukes, Nicolas Armstrong, Richard |
author_sort |
Alebouyeh Semami, Farnaz |
title |
New U–Pb geochronologic and palaeomagnetic constraints on the late Palaeoproterozoic Hartley magmatic event : evidence for a potential large igneous province in the Kaapvaal Craton during Kalahari assembly, South Africa |
title_short |
New U–Pb geochronologic and palaeomagnetic constraints on the late Palaeoproterozoic Hartley magmatic event : evidence for a potential large igneous province in the Kaapvaal Craton during Kalahari assembly, South Africa |
title_full |
New U–Pb geochronologic and palaeomagnetic constraints on the late Palaeoproterozoic Hartley magmatic event : evidence for a potential large igneous province in the Kaapvaal Craton during Kalahari assembly, South Africa |
title_fullStr |
New U–Pb geochronologic and palaeomagnetic constraints on the late Palaeoproterozoic Hartley magmatic event : evidence for a potential large igneous province in the Kaapvaal Craton during Kalahari assembly, South Africa |
title_full_unstemmed |
New U–Pb geochronologic and palaeomagnetic constraints on the late Palaeoproterozoic Hartley magmatic event : evidence for a potential large igneous province in the Kaapvaal Craton during Kalahari assembly, South Africa |
title_sort |
new u–pb geochronologic and palaeomagnetic constraints on the late palaeoproterozoic hartley magmatic event : evidence for a potential large igneous province in the kaapvaal craton during kalahari assembly, south africa |
publisher |
Taylor & Francis |
publishDate |
2016 |
url |
https://lup.lub.lu.se/record/fb0a5552-b741-48ee-a1f4-201cf3783788 https://doi.org/10.1080/11035897.2015.1124917 |
genre |
Geomagnetic Pole |
genre_facet |
Geomagnetic Pole |
op_source |
GFF; 138(1), pp 164-182 (2016) ISSN: 1103-5897 |
op_relation |
https://lup.lub.lu.se/record/fb0a5552-b741-48ee-a1f4-201cf3783788 http://dx.doi.org/10.1080/11035897.2015.1124917 scopus:84959093409 wos:000371812700012 |
op_doi |
https://doi.org/10.1080/11035897.2015.1124917 |
container_title |
GFF |
container_volume |
138 |
container_issue |
1 |
container_start_page |
164 |
op_container_end_page |
182 |
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1796942550912729088 |