Late Svecofennian sedimentary basins in the crystalline basement of NE Poland and adjacent area of Lithuania: ages, major sources of detritus, and correlations
The Precambrian basement of Lithuania and NE Poland, much of which is metasedimentary paragneiss, can be accessed only by cores from deep boreholes. Ion microprobe dating of detrital zircons from samples of these metasediments and the geochemical signatures of the rocks provide new insights into the...
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Polish Geological Institute
2015
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ftanucanberra:oai:digitalcollections.anu.edu.au:1885/51402 2023-05-15T16:11:56+02:00 Late Svecofennian sedimentary basins in the crystalline basement of NE Poland and adjacent area of Lithuania: ages, major sources of detritus, and correlations Krzeminska, Ewa Wiszniewska, Janina Skridlaite, Grazina Williams, Ian 2015-12-10T22:18:24Z http://hdl.handle.net/1885/51402 unknown Polish Geological Institute 1641-7291 http://hdl.handle.net/1885/51402 GEOLOGICAL QUARTERLY Journal article 2015 ftanucanberra 2015-12-21T23:31:48Z The Precambrian basement of Lithuania and NE Poland, much of which is metasedimentary paragneiss, can be accessed only by cores from deep boreholes. Ion microprobe dating of detrital zircons from samples of these metasediments and the geochemical signatures of the rocks provide new insights into their age and provenance. Detrital zircons from metasediments from Jastrze{ogonek}bna and Mońki have Pb isotopic ages in the ranges 3.14-1.83 and 3.53-1.82 Ga, respectively. Similar results have been obtained from the Lithuanian Lazdijai and Bliudziai paragneisses. About 30% of the analysed Polish detrital zircon cores are of Late Archaean age (2.90-2.60 Ga) and about 70% are Palaeoproterozoic (2.10-1.90 Ga), similar to the age distributions of detrital zircon from Svecofennian metasediments exposed in Central Sweden and Southern Finland. The youngest detrital zircon sub-groups indicate max i mum deposition ages of about 1.86 Ga, similar to the ages of exposed Svecofennian sedimentary basins. Possible source rocks of comparable ages and affinities can be found within Fennoscandia, Greenland and Sarmatia. Article in Journal/Newspaper Fennoscandia Greenland Australian National University: ANU Digital Collections Greenland |
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Open Polar |
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Australian National University: ANU Digital Collections |
op_collection_id |
ftanucanberra |
language |
unknown |
description |
The Precambrian basement of Lithuania and NE Poland, much of which is metasedimentary paragneiss, can be accessed only by cores from deep boreholes. Ion microprobe dating of detrital zircons from samples of these metasediments and the geochemical signatures of the rocks provide new insights into their age and provenance. Detrital zircons from metasediments from Jastrze{ogonek}bna and Mońki have Pb isotopic ages in the ranges 3.14-1.83 and 3.53-1.82 Ga, respectively. Similar results have been obtained from the Lithuanian Lazdijai and Bliudziai paragneisses. About 30% of the analysed Polish detrital zircon cores are of Late Archaean age (2.90-2.60 Ga) and about 70% are Palaeoproterozoic (2.10-1.90 Ga), similar to the age distributions of detrital zircon from Svecofennian metasediments exposed in Central Sweden and Southern Finland. The youngest detrital zircon sub-groups indicate max i mum deposition ages of about 1.86 Ga, similar to the ages of exposed Svecofennian sedimentary basins. Possible source rocks of comparable ages and affinities can be found within Fennoscandia, Greenland and Sarmatia. |
format |
Article in Journal/Newspaper |
author |
Krzeminska, Ewa Wiszniewska, Janina Skridlaite, Grazina Williams, Ian |
spellingShingle |
Krzeminska, Ewa Wiszniewska, Janina Skridlaite, Grazina Williams, Ian Late Svecofennian sedimentary basins in the crystalline basement of NE Poland and adjacent area of Lithuania: ages, major sources of detritus, and correlations |
author_facet |
Krzeminska, Ewa Wiszniewska, Janina Skridlaite, Grazina Williams, Ian |
author_sort |
Krzeminska, Ewa |
title |
Late Svecofennian sedimentary basins in the crystalline basement of NE Poland and adjacent area of Lithuania: ages, major sources of detritus, and correlations |
title_short |
Late Svecofennian sedimentary basins in the crystalline basement of NE Poland and adjacent area of Lithuania: ages, major sources of detritus, and correlations |
title_full |
Late Svecofennian sedimentary basins in the crystalline basement of NE Poland and adjacent area of Lithuania: ages, major sources of detritus, and correlations |
title_fullStr |
Late Svecofennian sedimentary basins in the crystalline basement of NE Poland and adjacent area of Lithuania: ages, major sources of detritus, and correlations |
title_full_unstemmed |
Late Svecofennian sedimentary basins in the crystalline basement of NE Poland and adjacent area of Lithuania: ages, major sources of detritus, and correlations |
title_sort |
late svecofennian sedimentary basins in the crystalline basement of ne poland and adjacent area of lithuania: ages, major sources of detritus, and correlations |
publisher |
Polish Geological Institute |
publishDate |
2015 |
url |
http://hdl.handle.net/1885/51402 |
geographic |
Greenland |
geographic_facet |
Greenland |
genre |
Fennoscandia Greenland |
genre_facet |
Fennoscandia Greenland |
op_source |
GEOLOGICAL QUARTERLY |
op_relation |
1641-7291 http://hdl.handle.net/1885/51402 |
_version_ |
1765997148113993728 |