Central Antarctic provenance of Permian sandstones in Dronning Maud Land and the Karoo Basin:integration of U-Pb and T-DM ages and host-rock affinity from detrital zircons
In conjugate SE Africa and Antarctica, Early Permian sandstones of the Swartrant Formation of the Ellisras Basin, Vryheid Formation of the Karoo Basin, and Amelang Plateau Formation of Dronning Maud Land (DML) were deposited after Gondwanan glaciation on a westward paleoslope. We analysed detrital z...
Published in: | Sedimentary Geology |
---|---|
Main Authors: | , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
2007
|
Subjects: | |
Online Access: | https://researchers.mq.edu.au/en/publications/4ade78a8-570e-4d04-8a26-e972a5a0af21 https://doi.org/10.1016/j.sedgeo.2007.07.011 |
id |
ftmacquarieunicr:oai:https://researchers.mq.edu.au:publications/4ade78a8-570e-4d04-8a26-e972a5a0af21 |
---|---|
record_format |
openpolar |
spelling |
ftmacquarieunicr:oai:https://researchers.mq.edu.au:publications/4ade78a8-570e-4d04-8a26-e972a5a0af21 2024-10-13T14:03:22+00:00 Central Antarctic provenance of Permian sandstones in Dronning Maud Land and the Karoo Basin:integration of U-Pb and T-DM ages and host-rock affinity from detrital zircons Veevers, J. J. Saeed, Ayesha 2007-12-15 https://researchers.mq.edu.au/en/publications/4ade78a8-570e-4d04-8a26-e972a5a0af21 https://doi.org/10.1016/j.sedgeo.2007.07.011 eng eng info:eu-repo/semantics/closedAccess Veevers , J J & Saeed , A 2007 , ' Central Antarctic provenance of Permian sandstones in Dronning Maud Land and the Karoo Basin : integration of U-Pb and T-DM ages and host-rock affinity from detrital zircons ' , Sedimentary Geology , vol. 202 , no. 4 , pp. 653-676 . https://doi.org/10.1016/j.sedgeo.2007.07.011 U-Pb ages Hf-isotopes Early Permian sandstone Karoo Basin Dronning Maud Land Central Antarctic provenance NATAL METAMORPHIC PROVINCE ELLSWORTH-WHITMORE MOUNTAINS HF ISOTOPE GEOCHEMISTRY CAPE-MEREDITH COMPLEX EAST ANTARCTICA SOUTH-AFRICA GRENVILLE-AGE KAAPVAAL-CRATON TECTONIC SIGNIFICANCE PALEOMAGNETIC DATA article 2007 ftmacquarieunicr https://doi.org/10.1016/j.sedgeo.2007.07.011 2024-09-18T23:49:09Z In conjugate SE Africa and Antarctica, Early Permian sandstones of the Swartrant Formation of the Ellisras Basin, Vryheid Formation of the Karoo Basin, and Amelang Plateau Formation of Dronning Maud Land (DML) were deposited after Gondwanan glaciation on a westward paleoslope. We analysed detrital zircons for U-Pb ages by a laser ablation microprobe-inductively coupled plasma mass spectrometer (LAM-ICPMS) and attached age significance only to clusters of three or more overlapping analyses. We analysed Hf-isotope compositions by a multi-collector spectrometer (LAM-MC-ICPMS) and trace elements by electron microprobe (EMP) and ICPMS. These analyses indicate the rock type and source (whether crustal or juvenile mantle) of the host magma, and a "crustal" model age (T-DM(C)). The integrated analysis gives a more distinctive, and more easily interpreted, picture of crustal evolution in the provenance area than age data alone. Zircons from the Ellisras Basin are aged 2700-2540 Ma with minor populations about 2815 Ma and 2040 Ma, which correspond with the ages of the upslope parts of the proximal Kaapvaal Craton and Limpopo Belt. Mafic rock is the dominant host rock, and it reflects the Archean granite-greenstone terrane of the Kaapvaal Craton. The three Karoo Basin samples and the two DML samples have zircons with these common properties: (1) 1160-880 Ma, host magma mafic granitoid (<65% SiO2) derived from juvenile depleted mantle sources (epsilon(Hf) positive) at 1.65 Ga and 1.35 Ga, with T-DM(C), of 2.0-0.9 Ga; (2) 760 to 480 Ma, host magma granitoid and low-heavy rare earth element rock (?alkaline rock-carbonatite), derived from mixed crustal and juvenile depleted mantle sources (epsilon(Hf) positive and negative) at 1.50 Ga and 1.35 Ga, with T-DM(C) of 2.0-0.9 Ga. Together with similar detrital zircons in Triassic sandstone of SE Australia, these properties reflect those in upslope central Antarctica, indicating a provenance of similar to 1000 Ma (Grenville) cratons embedded in 700-500 Ma (Pan-Gondwanaland) fold ... Article in Journal/Newspaper Antarc* Antarctic Antarctica DML Dronning Maud Land East Antarctica Macquarie University Research Portal Antarctic Dronning Maud Land East Antarctica Meredith ENVELOPE(67.717,67.717,-71.200,-71.200) Whitmore Mountains ENVELOPE(-104.000,-104.000,-82.500,-82.500) Sedimentary Geology 202 4 653 676 |
institution |
Open Polar |
collection |
Macquarie University Research Portal |
op_collection_id |
ftmacquarieunicr |
language |
English |
topic |
U-Pb ages Hf-isotopes Early Permian sandstone Karoo Basin Dronning Maud Land Central Antarctic provenance NATAL METAMORPHIC PROVINCE ELLSWORTH-WHITMORE MOUNTAINS HF ISOTOPE GEOCHEMISTRY CAPE-MEREDITH COMPLEX EAST ANTARCTICA SOUTH-AFRICA GRENVILLE-AGE KAAPVAAL-CRATON TECTONIC SIGNIFICANCE PALEOMAGNETIC DATA |
spellingShingle |
U-Pb ages Hf-isotopes Early Permian sandstone Karoo Basin Dronning Maud Land Central Antarctic provenance NATAL METAMORPHIC PROVINCE ELLSWORTH-WHITMORE MOUNTAINS HF ISOTOPE GEOCHEMISTRY CAPE-MEREDITH COMPLEX EAST ANTARCTICA SOUTH-AFRICA GRENVILLE-AGE KAAPVAAL-CRATON TECTONIC SIGNIFICANCE PALEOMAGNETIC DATA Veevers, J. J. Saeed, Ayesha Central Antarctic provenance of Permian sandstones in Dronning Maud Land and the Karoo Basin:integration of U-Pb and T-DM ages and host-rock affinity from detrital zircons |
topic_facet |
U-Pb ages Hf-isotopes Early Permian sandstone Karoo Basin Dronning Maud Land Central Antarctic provenance NATAL METAMORPHIC PROVINCE ELLSWORTH-WHITMORE MOUNTAINS HF ISOTOPE GEOCHEMISTRY CAPE-MEREDITH COMPLEX EAST ANTARCTICA SOUTH-AFRICA GRENVILLE-AGE KAAPVAAL-CRATON TECTONIC SIGNIFICANCE PALEOMAGNETIC DATA |
description |
In conjugate SE Africa and Antarctica, Early Permian sandstones of the Swartrant Formation of the Ellisras Basin, Vryheid Formation of the Karoo Basin, and Amelang Plateau Formation of Dronning Maud Land (DML) were deposited after Gondwanan glaciation on a westward paleoslope. We analysed detrital zircons for U-Pb ages by a laser ablation microprobe-inductively coupled plasma mass spectrometer (LAM-ICPMS) and attached age significance only to clusters of three or more overlapping analyses. We analysed Hf-isotope compositions by a multi-collector spectrometer (LAM-MC-ICPMS) and trace elements by electron microprobe (EMP) and ICPMS. These analyses indicate the rock type and source (whether crustal or juvenile mantle) of the host magma, and a "crustal" model age (T-DM(C)). The integrated analysis gives a more distinctive, and more easily interpreted, picture of crustal evolution in the provenance area than age data alone. Zircons from the Ellisras Basin are aged 2700-2540 Ma with minor populations about 2815 Ma and 2040 Ma, which correspond with the ages of the upslope parts of the proximal Kaapvaal Craton and Limpopo Belt. Mafic rock is the dominant host rock, and it reflects the Archean granite-greenstone terrane of the Kaapvaal Craton. The three Karoo Basin samples and the two DML samples have zircons with these common properties: (1) 1160-880 Ma, host magma mafic granitoid (<65% SiO2) derived from juvenile depleted mantle sources (epsilon(Hf) positive) at 1.65 Ga and 1.35 Ga, with T-DM(C), of 2.0-0.9 Ga; (2) 760 to 480 Ma, host magma granitoid and low-heavy rare earth element rock (?alkaline rock-carbonatite), derived from mixed crustal and juvenile depleted mantle sources (epsilon(Hf) positive and negative) at 1.50 Ga and 1.35 Ga, with T-DM(C) of 2.0-0.9 Ga. Together with similar detrital zircons in Triassic sandstone of SE Australia, these properties reflect those in upslope central Antarctica, indicating a provenance of similar to 1000 Ma (Grenville) cratons embedded in 700-500 Ma (Pan-Gondwanaland) fold ... |
format |
Article in Journal/Newspaper |
author |
Veevers, J. J. Saeed, Ayesha |
author_facet |
Veevers, J. J. Saeed, Ayesha |
author_sort |
Veevers, J. J. |
title |
Central Antarctic provenance of Permian sandstones in Dronning Maud Land and the Karoo Basin:integration of U-Pb and T-DM ages and host-rock affinity from detrital zircons |
title_short |
Central Antarctic provenance of Permian sandstones in Dronning Maud Land and the Karoo Basin:integration of U-Pb and T-DM ages and host-rock affinity from detrital zircons |
title_full |
Central Antarctic provenance of Permian sandstones in Dronning Maud Land and the Karoo Basin:integration of U-Pb and T-DM ages and host-rock affinity from detrital zircons |
title_fullStr |
Central Antarctic provenance of Permian sandstones in Dronning Maud Land and the Karoo Basin:integration of U-Pb and T-DM ages and host-rock affinity from detrital zircons |
title_full_unstemmed |
Central Antarctic provenance of Permian sandstones in Dronning Maud Land and the Karoo Basin:integration of U-Pb and T-DM ages and host-rock affinity from detrital zircons |
title_sort |
central antarctic provenance of permian sandstones in dronning maud land and the karoo basin:integration of u-pb and t-dm ages and host-rock affinity from detrital zircons |
publishDate |
2007 |
url |
https://researchers.mq.edu.au/en/publications/4ade78a8-570e-4d04-8a26-e972a5a0af21 https://doi.org/10.1016/j.sedgeo.2007.07.011 |
long_lat |
ENVELOPE(67.717,67.717,-71.200,-71.200) ENVELOPE(-104.000,-104.000,-82.500,-82.500) |
geographic |
Antarctic Dronning Maud Land East Antarctica Meredith Whitmore Mountains |
geographic_facet |
Antarctic Dronning Maud Land East Antarctica Meredith Whitmore Mountains |
genre |
Antarc* Antarctic Antarctica DML Dronning Maud Land East Antarctica |
genre_facet |
Antarc* Antarctic Antarctica DML Dronning Maud Land East Antarctica |
op_source |
Veevers , J J & Saeed , A 2007 , ' Central Antarctic provenance of Permian sandstones in Dronning Maud Land and the Karoo Basin : integration of U-Pb and T-DM ages and host-rock affinity from detrital zircons ' , Sedimentary Geology , vol. 202 , no. 4 , pp. 653-676 . https://doi.org/10.1016/j.sedgeo.2007.07.011 |
op_rights |
info:eu-repo/semantics/closedAccess |
op_doi |
https://doi.org/10.1016/j.sedgeo.2007.07.011 |
container_title |
Sedimentary Geology |
container_volume |
202 |
container_issue |
4 |
container_start_page |
653 |
op_container_end_page |
676 |
_version_ |
1812808306022940672 |