(Table 1) Composition of volcanic glasses from the East Scotia Ridge ...
New U-series isotope data for lavas from the East Scotia backarc spreading center span a large range in (230Th/232Th) and (238U/232Th). Most of the backarc lavas have (238U/230Th) < 1, similar to the composition of mid-oceanic-ridge basalts (MORB). Lavas from two segments have (238U/230Th) > 1...
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ftdatacite:10.1594/pangaea.847689 2023-10-01T03:51:54+02:00 (Table 1) Composition of volcanic glasses from the East Scotia Ridge ... Fretzdorff, Susanne Haase, Karsten M Leat, Philip Livermore, Roy A Garbe-Schönberg, Dieter Fietzke, Jan Stoffers, Peter 2003 text/tab-separated-values https://dx.doi.org/10.1594/pangaea.847689 https://doi.pangaea.de/10.1594/PANGAEA.847689 en eng PANGAEA https://dx.doi.org/10.1130/g19469.1 Creative Commons Attribution 3.0 Unported https://creativecommons.org/licenses/by/3.0/legalcode cc-by-3.0 Section Sample ID Magnesium oxide Thorium Uranium Uranium-238/Thorium-232 ratio Error, absolute Uranium-234/Uranium-238 activity ratio Thorium-230/Thorium-232 ratio Thorium-230/Uranium-238 ratio Rock sample Priority Programme 1158 Antarctic Research with Comparable Investigations in Arctic Sea Ice Areas SPP1158 Dataset Supplementary Dataset dataset 2003 ftdatacite https://doi.org/10.1594/pangaea.84768910.1130/g19469.1 2023-09-04T14:52:34Z New U-series isotope data for lavas from the East Scotia backarc spreading center span a large range in (230Th/232Th) and (238U/232Th). Most of the backarc lavas have (238U/230Th) < 1, similar to the composition of mid-oceanic-ridge basalts (MORB). Lavas from two segments have (238U/230Th) > 1 and are enriched in fluid-mobile elements, implying a recent addition of a U-rich slab-derived component. The data from one segment suggest an influence from an aqueous fluid from altered MORB, whereas samples from the other slab-influenced segment show addition of a sediment melt. The slab-influenced samples form a distinct trend in the equiline diagram between aqueous fluid and sediment melt that is suggested to be a mixing line rather than an isochron. ... : The quoted errors are 2 sigma errors. ... Dataset Antarc* Antarctic Arctic Sea ice DataCite Metadata Store (German National Library of Science and Technology) Arctic Antarctic East Scotia Ridge ENVELOPE(-29.250,-29.250,-57.917,-57.917) |
institution |
Open Polar |
collection |
DataCite Metadata Store (German National Library of Science and Technology) |
op_collection_id |
ftdatacite |
language |
English |
topic |
Section Sample ID Magnesium oxide Thorium Uranium Uranium-238/Thorium-232 ratio Error, absolute Uranium-234/Uranium-238 activity ratio Thorium-230/Thorium-232 ratio Thorium-230/Uranium-238 ratio Rock sample Priority Programme 1158 Antarctic Research with Comparable Investigations in Arctic Sea Ice Areas SPP1158 |
spellingShingle |
Section Sample ID Magnesium oxide Thorium Uranium Uranium-238/Thorium-232 ratio Error, absolute Uranium-234/Uranium-238 activity ratio Thorium-230/Thorium-232 ratio Thorium-230/Uranium-238 ratio Rock sample Priority Programme 1158 Antarctic Research with Comparable Investigations in Arctic Sea Ice Areas SPP1158 Fretzdorff, Susanne Haase, Karsten M Leat, Philip Livermore, Roy A Garbe-Schönberg, Dieter Fietzke, Jan Stoffers, Peter (Table 1) Composition of volcanic glasses from the East Scotia Ridge ... |
topic_facet |
Section Sample ID Magnesium oxide Thorium Uranium Uranium-238/Thorium-232 ratio Error, absolute Uranium-234/Uranium-238 activity ratio Thorium-230/Thorium-232 ratio Thorium-230/Uranium-238 ratio Rock sample Priority Programme 1158 Antarctic Research with Comparable Investigations in Arctic Sea Ice Areas SPP1158 |
description |
New U-series isotope data for lavas from the East Scotia backarc spreading center span a large range in (230Th/232Th) and (238U/232Th). Most of the backarc lavas have (238U/230Th) < 1, similar to the composition of mid-oceanic-ridge basalts (MORB). Lavas from two segments have (238U/230Th) > 1 and are enriched in fluid-mobile elements, implying a recent addition of a U-rich slab-derived component. The data from one segment suggest an influence from an aqueous fluid from altered MORB, whereas samples from the other slab-influenced segment show addition of a sediment melt. The slab-influenced samples form a distinct trend in the equiline diagram between aqueous fluid and sediment melt that is suggested to be a mixing line rather than an isochron. ... : The quoted errors are 2 sigma errors. ... |
format |
Dataset |
author |
Fretzdorff, Susanne Haase, Karsten M Leat, Philip Livermore, Roy A Garbe-Schönberg, Dieter Fietzke, Jan Stoffers, Peter |
author_facet |
Fretzdorff, Susanne Haase, Karsten M Leat, Philip Livermore, Roy A Garbe-Schönberg, Dieter Fietzke, Jan Stoffers, Peter |
author_sort |
Fretzdorff, Susanne |
title |
(Table 1) Composition of volcanic glasses from the East Scotia Ridge ... |
title_short |
(Table 1) Composition of volcanic glasses from the East Scotia Ridge ... |
title_full |
(Table 1) Composition of volcanic glasses from the East Scotia Ridge ... |
title_fullStr |
(Table 1) Composition of volcanic glasses from the East Scotia Ridge ... |
title_full_unstemmed |
(Table 1) Composition of volcanic glasses from the East Scotia Ridge ... |
title_sort |
(table 1) composition of volcanic glasses from the east scotia ridge ... |
publisher |
PANGAEA |
publishDate |
2003 |
url |
https://dx.doi.org/10.1594/pangaea.847689 https://doi.pangaea.de/10.1594/PANGAEA.847689 |
long_lat |
ENVELOPE(-29.250,-29.250,-57.917,-57.917) |
geographic |
Arctic Antarctic East Scotia Ridge |
geographic_facet |
Arctic Antarctic East Scotia Ridge |
genre |
Antarc* Antarctic Arctic Sea ice |
genre_facet |
Antarc* Antarctic Arctic Sea ice |
op_relation |
https://dx.doi.org/10.1130/g19469.1 |
op_rights |
Creative Commons Attribution 3.0 Unported https://creativecommons.org/licenses/by/3.0/legalcode cc-by-3.0 |
op_doi |
https://doi.org/10.1594/pangaea.84768910.1130/g19469.1 |
_version_ |
1778517242967752704 |