Carboniferous metamorphism and partial melting of the Greenland Group in the Jackson River valley, south Westland
The peak conditions and timing of metamorphism have been determined for the early Paleozoic Greenland Group in south Westland, New Zealand. The Greenland Group, which is the most extensive pre-Cenozoic unit west of the Alpine Fault in Westland, is dominated by greenschist facies greywacke and argill...
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ftdatacite:10.6084/m9.figshare.1286795 2023-05-15T16:26:16+02:00 Carboniferous metamorphism and partial melting of the Greenland Group in the Jackson River valley, south Westland MC Palmer JM Scott JR Muhling AK Kennedy 2015 https://dx.doi.org/10.6084/m9.figshare.1286795 https://tandf.figshare.com/articles/dataset/Carboniferous_metamorphism_and_partial_melting_of_the_Greenland_Group_in_the_Jackson_River_valley_south_Westland/1286795 unknown Taylor & Francis https://dx.doi.org/10.1080/00288306.2014.982661 Creative Commons Attribution Non Commercial No Derivatives 4.0 International https://creativecommons.org/licenses/by-nc-nd/4.0/legalcode cc-by-nc-nd-4.0 CC-BY-NC-ND Science Policy Biological Sciences Ecology FOS Biological sciences Chemistry Earth and Environmental Sciences Evolutionary Biology dataset Dataset 2015 ftdatacite https://doi.org/10.6084/m9.figshare.1286795 https://doi.org/10.1080/00288306.2014.982661 2021-11-05T12:55:41Z The peak conditions and timing of metamorphism have been determined for the early Paleozoic Greenland Group in south Westland, New Zealand. The Greenland Group, which is the most extensive pre-Cenozoic unit west of the Alpine Fault in Westland, is dominated by greenschist facies greywacke and argillite. However, in the Jackson River valley this unit comprises amphibolite facies pelitic and psammitic gneisses. Psammitic horizons are dominated by biotite, plagioclase and quartz. Pelitic horizons have similar mineralogy but also contain sillimanite and K–feldspar, as well as boudinaged K–feldspar-bearing leucosomes. Conventional geothermometry and thermodynamic modelling indicate that peak metamorphism occurred between 660 and 700 °C and 3.5 and 6.0 kbar. The timing of this moderately high–T/low–P event is constrained to be mid-Paleozoic by U–Th–Pb dating of overgrowths on detrital zircon (334 ± 18 Ma) and confirmed to be Carboniferous by a single population of monazite grains (343 ± 3 Ma). Greenland Group metamorphism in the Jackson River valley may represent Carboniferous high crustal heat flow in the Gondwana margin hinterland while crustal thickening was occurring closer to the subduction zone. Dataset Greenland DataCite Metadata Store (German National Library of Science and Technology) Greenland New Zealand Jackson River ENVELOPE(-88.584,-88.584,73.285,73.285) |
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Open Polar |
collection |
DataCite Metadata Store (German National Library of Science and Technology) |
op_collection_id |
ftdatacite |
language |
unknown |
topic |
Science Policy Biological Sciences Ecology FOS Biological sciences Chemistry Earth and Environmental Sciences Evolutionary Biology |
spellingShingle |
Science Policy Biological Sciences Ecology FOS Biological sciences Chemistry Earth and Environmental Sciences Evolutionary Biology MC Palmer JM Scott JR Muhling AK Kennedy Carboniferous metamorphism and partial melting of the Greenland Group in the Jackson River valley, south Westland |
topic_facet |
Science Policy Biological Sciences Ecology FOS Biological sciences Chemistry Earth and Environmental Sciences Evolutionary Biology |
description |
The peak conditions and timing of metamorphism have been determined for the early Paleozoic Greenland Group in south Westland, New Zealand. The Greenland Group, which is the most extensive pre-Cenozoic unit west of the Alpine Fault in Westland, is dominated by greenschist facies greywacke and argillite. However, in the Jackson River valley this unit comprises amphibolite facies pelitic and psammitic gneisses. Psammitic horizons are dominated by biotite, plagioclase and quartz. Pelitic horizons have similar mineralogy but also contain sillimanite and K–feldspar, as well as boudinaged K–feldspar-bearing leucosomes. Conventional geothermometry and thermodynamic modelling indicate that peak metamorphism occurred between 660 and 700 °C and 3.5 and 6.0 kbar. The timing of this moderately high–T/low–P event is constrained to be mid-Paleozoic by U–Th–Pb dating of overgrowths on detrital zircon (334 ± 18 Ma) and confirmed to be Carboniferous by a single population of monazite grains (343 ± 3 Ma). Greenland Group metamorphism in the Jackson River valley may represent Carboniferous high crustal heat flow in the Gondwana margin hinterland while crustal thickening was occurring closer to the subduction zone. |
format |
Dataset |
author |
MC Palmer JM Scott JR Muhling AK Kennedy |
author_facet |
MC Palmer JM Scott JR Muhling AK Kennedy |
author_sort |
MC Palmer |
title |
Carboniferous metamorphism and partial melting of the Greenland Group in the Jackson River valley, south Westland |
title_short |
Carboniferous metamorphism and partial melting of the Greenland Group in the Jackson River valley, south Westland |
title_full |
Carboniferous metamorphism and partial melting of the Greenland Group in the Jackson River valley, south Westland |
title_fullStr |
Carboniferous metamorphism and partial melting of the Greenland Group in the Jackson River valley, south Westland |
title_full_unstemmed |
Carboniferous metamorphism and partial melting of the Greenland Group in the Jackson River valley, south Westland |
title_sort |
carboniferous metamorphism and partial melting of the greenland group in the jackson river valley, south westland |
publisher |
Taylor & Francis |
publishDate |
2015 |
url |
https://dx.doi.org/10.6084/m9.figshare.1286795 https://tandf.figshare.com/articles/dataset/Carboniferous_metamorphism_and_partial_melting_of_the_Greenland_Group_in_the_Jackson_River_valley_south_Westland/1286795 |
long_lat |
ENVELOPE(-88.584,-88.584,73.285,73.285) |
geographic |
Greenland New Zealand Jackson River |
geographic_facet |
Greenland New Zealand Jackson River |
genre |
Greenland |
genre_facet |
Greenland |
op_relation |
https://dx.doi.org/10.1080/00288306.2014.982661 |
op_rights |
Creative Commons Attribution Non Commercial No Derivatives 4.0 International https://creativecommons.org/licenses/by-nc-nd/4.0/legalcode cc-by-nc-nd-4.0 |
op_rightsnorm |
CC-BY-NC-ND |
op_doi |
https://doi.org/10.6084/m9.figshare.1286795 https://doi.org/10.1080/00288306.2014.982661 |
_version_ |
1766015172458053632 |