Detrital zircon age constraints on the provenance of sandstones on Hatton Bank and Edoras Bank, NE Atlantic
U-Pb dating of detrital zircons shows that the provenance of Cretaceous-Palaeogene sandstones on Hatton and Edoras banks (SW Rockall Plateau) comprises magmatic rocks dated at c. 1800 Ma and c. 1750 Ma, respectively. Their depositional setting, first-cycle mineralogy and unimodal detrital zircon pop...
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Geological Society of London
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ftanucanberra:oai:digitalcollections.anu.edu.au:1885/38219 2023-05-15T16:29:30+02:00 Detrital zircon age constraints on the provenance of sandstones on Hatton Bank and Edoras Bank, NE Atlantic Morton, Andrew Hitchen, Kenneth Fanning, Christopher Yaxley, Gregory Johnson, Howard Ritchie, J. Derek 2015-12-08T22:48:08Z http://hdl.handle.net/1885/38219 unknown Geological Society of London 0016-7649 http://hdl.handle.net/1885/38219 Journal of the Geological Society Journal article 2015 ftanucanberra 2015-12-28T23:26:03Z U-Pb dating of detrital zircons shows that the provenance of Cretaceous-Palaeogene sandstones on Hatton and Edoras banks (SW Rockall Plateau) comprises magmatic rocks dated at c. 1800 Ma and c. 1750 Ma, respectively. Their depositional setting, first-cycle mineralogy and unimodal detrital zircon populations suggest that these sandstones are of local origin. The zircon age data are therefore considered to provide constraints on these poorly understood areas of the Rockall Plateau. The U-Pb dates are directly comparable with U-Pb zircon crystallization ages from granitoid rocks reported from the Ketilidian Belt of southern Greenland and from the Rhinns Complex of western Britain. Hf isotopic data from the Edoras Bank sample are consistent with derivation from a juvenile Palaeoproterozoic block. In conjunction with previously reported Sm-Nd Tdm model ages from the Ketilidian Belt, Rockall Bank and the Rhinns Complex, these data extend the known distribution of a large juvenile Palaeoproterozoic terrane spanning the southern NE Atlantic. In contrast, Hf isotopic data from the Hatton Bank sample imply a large contribution from Archaean crust. The zircon population from Edoras Bank also contains sparse Mesoproterozoic grains, providing evidence for the presence of volumetrically minor Grenville-age intrusions in the southern part of the Rockall Plateau. Article in Journal/Newspaper Greenland Australian National University: ANU Digital Collections Greenland Rockall Plateau ENVELOPE(-18.833,-18.833,56.333,56.333) Rockall Bank ENVELOPE(-16.519,-16.519,55.821,55.821) Hatton Bank ENVELOPE(-18.000,-18.000,58.583,58.583) Edoras Bank ENVELOPE(-22.167,-22.167,56.000,56.000) |
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Open Polar |
collection |
Australian National University: ANU Digital Collections |
op_collection_id |
ftanucanberra |
language |
unknown |
description |
U-Pb dating of detrital zircons shows that the provenance of Cretaceous-Palaeogene sandstones on Hatton and Edoras banks (SW Rockall Plateau) comprises magmatic rocks dated at c. 1800 Ma and c. 1750 Ma, respectively. Their depositional setting, first-cycle mineralogy and unimodal detrital zircon populations suggest that these sandstones are of local origin. The zircon age data are therefore considered to provide constraints on these poorly understood areas of the Rockall Plateau. The U-Pb dates are directly comparable with U-Pb zircon crystallization ages from granitoid rocks reported from the Ketilidian Belt of southern Greenland and from the Rhinns Complex of western Britain. Hf isotopic data from the Edoras Bank sample are consistent with derivation from a juvenile Palaeoproterozoic block. In conjunction with previously reported Sm-Nd Tdm model ages from the Ketilidian Belt, Rockall Bank and the Rhinns Complex, these data extend the known distribution of a large juvenile Palaeoproterozoic terrane spanning the southern NE Atlantic. In contrast, Hf isotopic data from the Hatton Bank sample imply a large contribution from Archaean crust. The zircon population from Edoras Bank also contains sparse Mesoproterozoic grains, providing evidence for the presence of volumetrically minor Grenville-age intrusions in the southern part of the Rockall Plateau. |
format |
Article in Journal/Newspaper |
author |
Morton, Andrew Hitchen, Kenneth Fanning, Christopher Yaxley, Gregory Johnson, Howard Ritchie, J. Derek |
spellingShingle |
Morton, Andrew Hitchen, Kenneth Fanning, Christopher Yaxley, Gregory Johnson, Howard Ritchie, J. Derek Detrital zircon age constraints on the provenance of sandstones on Hatton Bank and Edoras Bank, NE Atlantic |
author_facet |
Morton, Andrew Hitchen, Kenneth Fanning, Christopher Yaxley, Gregory Johnson, Howard Ritchie, J. Derek |
author_sort |
Morton, Andrew |
title |
Detrital zircon age constraints on the provenance of sandstones on Hatton Bank and Edoras Bank, NE Atlantic |
title_short |
Detrital zircon age constraints on the provenance of sandstones on Hatton Bank and Edoras Bank, NE Atlantic |
title_full |
Detrital zircon age constraints on the provenance of sandstones on Hatton Bank and Edoras Bank, NE Atlantic |
title_fullStr |
Detrital zircon age constraints on the provenance of sandstones on Hatton Bank and Edoras Bank, NE Atlantic |
title_full_unstemmed |
Detrital zircon age constraints on the provenance of sandstones on Hatton Bank and Edoras Bank, NE Atlantic |
title_sort |
detrital zircon age constraints on the provenance of sandstones on hatton bank and edoras bank, ne atlantic |
publisher |
Geological Society of London |
publishDate |
2015 |
url |
http://hdl.handle.net/1885/38219 |
long_lat |
ENVELOPE(-18.833,-18.833,56.333,56.333) ENVELOPE(-16.519,-16.519,55.821,55.821) ENVELOPE(-18.000,-18.000,58.583,58.583) ENVELOPE(-22.167,-22.167,56.000,56.000) |
geographic |
Greenland Rockall Plateau Rockall Bank Hatton Bank Edoras Bank |
geographic_facet |
Greenland Rockall Plateau Rockall Bank Hatton Bank Edoras Bank |
genre |
Greenland |
genre_facet |
Greenland |
op_source |
Journal of the Geological Society |
op_relation |
0016-7649 http://hdl.handle.net/1885/38219 |
_version_ |
1766019202926247936 |