U-Pb SHRIMP ages of detrital granulite-facies rutiles: further constraints on provenance of Jurassic sandstones on the Norwegian margin
Electron microprobe analyses of 128 detrital rutile grains from two Jurassic sandstone samples (Hettangian and Bajocian-Bathonian in age) from hydrocarbon exploration wells on the Norwegian margin confirm that more than 85 % of the rutiles were derived from metapelitic rocks. Zr-in-rutile geothermom...
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ftanucanberra:oai:openresearch-repository.anu.edu.au:1885/50560 2024-01-14T10:06:32+01:00 U-Pb SHRIMP ages of detrital granulite-facies rutiles: further constraints on provenance of Jurassic sandstones on the Norwegian margin Meinhold, Guido Morton, Andrew Fanning, Christopher Whitham, A G http://hdl.handle.net/1885/50560 https://doi.org/10.1017/S0016756810000877 https://openresearch-repository.anu.edu.au/bitstream/1885/50560/5/u4027924xPUB206_2011.pdf.jpg https://openresearch-repository.anu.edu.au/bitstream/1885/50560/7/01_Meinhold_U-Pb_SHRIMP_ages_of_detrital_2010.pdf.jpg unknown Cambridge University Press 0016-7568 http://hdl.handle.net/1885/50560 doi:10.1017/S0016756810000877 https://openresearch-repository.anu.edu.au/bitstream/1885/50560/5/u4027924xPUB206_2011.pdf.jpg https://openresearch-repository.anu.edu.au/bitstream/1885/50560/7/01_Meinhold_U-Pb_SHRIMP_ages_of_detrital_2010.pdf.jpg Geological Magazine Keywords: clastic sediment electron probe analysis granulite facies high temperature hydrocarbon exploration Jurassic metamorphism metapelite metasedimentary rock provenance rutile sandstone SHRIMP dating uranium-lead dating Atlantic Ocean North Sea geothermometry Norwegian margin sediment provenance U-Pb geochronology Journal article ftanucanberra https://doi.org/10.1017/S0016756810000877 2023-12-15T09:35:32Z Electron microprobe analyses of 128 detrital rutile grains from two Jurassic sandstone samples (Hettangian and Bajocian-Bathonian in age) from hydrocarbon exploration wells on the Norwegian margin confirm that more than 85 % of the rutiles were derived from metapelitic rocks. Zr-in-rutile geothermometry confirms that about 83 % of the rutile was formed under high-grade metamorphism (>750 C). Sixty-two rutile grains, including 60 of the identified high-temperature rutile population, were also analysed for U-Pb geochronology using SHRIMP. The206Pb-238U rutile ages range from approximately 485-292 Ma, with a major cluster between 450 and 380 Ma. These data suggest that the detrital rutile was predominantly derived from a felsic source that experienced granulite-facies metamorphism about 450-380 Ma ago. This conclusion is consistent with derivation from high-grade Caledonian metasedimentary rocks, probably the Krummedal sequence in central East Greenland, as previously suggested by an earlier provenance study using conventional heavy mineral analysis, garnet geochemistry and detrital zircon age dating. The present study underscores the importance of rutile geochemistry and geochronology in quantitative single-mineral provenance analysis of clastic sedimentary rocks. Article in Journal/Newspaper East Greenland Greenland Australian National University: ANU Digital Collections Greenland Geological Magazine 148 3 473 480 |
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Open Polar |
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Australian National University: ANU Digital Collections |
op_collection_id |
ftanucanberra |
language |
unknown |
topic |
Keywords: clastic sediment electron probe analysis granulite facies high temperature hydrocarbon exploration Jurassic metamorphism metapelite metasedimentary rock provenance rutile sandstone SHRIMP dating uranium-lead dating Atlantic Ocean North Sea geothermometry Norwegian margin sediment provenance U-Pb geochronology |
spellingShingle |
Keywords: clastic sediment electron probe analysis granulite facies high temperature hydrocarbon exploration Jurassic metamorphism metapelite metasedimentary rock provenance rutile sandstone SHRIMP dating uranium-lead dating Atlantic Ocean North Sea geothermometry Norwegian margin sediment provenance U-Pb geochronology Meinhold, Guido Morton, Andrew Fanning, Christopher Whitham, A G U-Pb SHRIMP ages of detrital granulite-facies rutiles: further constraints on provenance of Jurassic sandstones on the Norwegian margin |
topic_facet |
Keywords: clastic sediment electron probe analysis granulite facies high temperature hydrocarbon exploration Jurassic metamorphism metapelite metasedimentary rock provenance rutile sandstone SHRIMP dating uranium-lead dating Atlantic Ocean North Sea geothermometry Norwegian margin sediment provenance U-Pb geochronology |
description |
Electron microprobe analyses of 128 detrital rutile grains from two Jurassic sandstone samples (Hettangian and Bajocian-Bathonian in age) from hydrocarbon exploration wells on the Norwegian margin confirm that more than 85 % of the rutiles were derived from metapelitic rocks. Zr-in-rutile geothermometry confirms that about 83 % of the rutile was formed under high-grade metamorphism (>750 C). Sixty-two rutile grains, including 60 of the identified high-temperature rutile population, were also analysed for U-Pb geochronology using SHRIMP. The206Pb-238U rutile ages range from approximately 485-292 Ma, with a major cluster between 450 and 380 Ma. These data suggest that the detrital rutile was predominantly derived from a felsic source that experienced granulite-facies metamorphism about 450-380 Ma ago. This conclusion is consistent with derivation from high-grade Caledonian metasedimentary rocks, probably the Krummedal sequence in central East Greenland, as previously suggested by an earlier provenance study using conventional heavy mineral analysis, garnet geochemistry and detrital zircon age dating. The present study underscores the importance of rutile geochemistry and geochronology in quantitative single-mineral provenance analysis of clastic sedimentary rocks. |
format |
Article in Journal/Newspaper |
author |
Meinhold, Guido Morton, Andrew Fanning, Christopher Whitham, A G |
author_facet |
Meinhold, Guido Morton, Andrew Fanning, Christopher Whitham, A G |
author_sort |
Meinhold, Guido |
title |
U-Pb SHRIMP ages of detrital granulite-facies rutiles: further constraints on provenance of Jurassic sandstones on the Norwegian margin |
title_short |
U-Pb SHRIMP ages of detrital granulite-facies rutiles: further constraints on provenance of Jurassic sandstones on the Norwegian margin |
title_full |
U-Pb SHRIMP ages of detrital granulite-facies rutiles: further constraints on provenance of Jurassic sandstones on the Norwegian margin |
title_fullStr |
U-Pb SHRIMP ages of detrital granulite-facies rutiles: further constraints on provenance of Jurassic sandstones on the Norwegian margin |
title_full_unstemmed |
U-Pb SHRIMP ages of detrital granulite-facies rutiles: further constraints on provenance of Jurassic sandstones on the Norwegian margin |
title_sort |
u-pb shrimp ages of detrital granulite-facies rutiles: further constraints on provenance of jurassic sandstones on the norwegian margin |
publisher |
Cambridge University Press |
url |
http://hdl.handle.net/1885/50560 https://doi.org/10.1017/S0016756810000877 https://openresearch-repository.anu.edu.au/bitstream/1885/50560/5/u4027924xPUB206_2011.pdf.jpg https://openresearch-repository.anu.edu.au/bitstream/1885/50560/7/01_Meinhold_U-Pb_SHRIMP_ages_of_detrital_2010.pdf.jpg |
geographic |
Greenland |
geographic_facet |
Greenland |
genre |
East Greenland Greenland |
genre_facet |
East Greenland Greenland |
op_source |
Geological Magazine |
op_relation |
0016-7568 http://hdl.handle.net/1885/50560 doi:10.1017/S0016756810000877 https://openresearch-repository.anu.edu.au/bitstream/1885/50560/5/u4027924xPUB206_2011.pdf.jpg https://openresearch-repository.anu.edu.au/bitstream/1885/50560/7/01_Meinhold_U-Pb_SHRIMP_ages_of_detrital_2010.pdf.jpg |
op_doi |
https://doi.org/10.1017/S0016756810000877 |
container_title |
Geological Magazine |
container_volume |
148 |
container_issue |
3 |
container_start_page |
473 |
op_container_end_page |
480 |
_version_ |
1788060993391165440 |