The Importance of Eurekan Mountains on Cenozoic Sediment Routing on the Western Barents Shelf
The importance of topography generated by Eocene Eurekan deformation as a sediment source for sandstones deposited on the western Barents Shelf margin is evaluated through a sediment provenance study conducted on wellbore materials retrieved from Spitsbergen and from the Vestbakken Volcanic Province...
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2023
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ftmdpi:oai:mdpi.com:/2076-3263/13/3/91/ 2023-08-20T04:05:31+02:00 The Importance of Eurekan Mountains on Cenozoic Sediment Routing on the Western Barents Shelf Michael J. Flowerdew Edward J. Fleming David M. Chew Andrew C. Morton Dirk Frei Aukje Benedictus Jenny Omma Teal. R. Riley Eszter Badenszki Martin J. Whitehouse agris 2023-03-21 application/pdf https://doi.org/10.3390/geosciences13030091 EN eng Multidisciplinary Digital Publishing Institute Sedimentology, Stratigraphy and Palaeontology https://dx.doi.org/10.3390/geosciences13030091 https://creativecommons.org/licenses/by/4.0/ Geosciences; Volume 13; Issue 3; Pages: 91 source-to-sink sediment provenance Eocene Paleogene Spitsbergen fold-and-thrust belt Central Tertiary Basin Torsk Formation Text 2023 ftmdpi https://doi.org/10.3390/geosciences13030091 2023-08-01T09:22:15Z The importance of topography generated by Eocene Eurekan deformation as a sediment source for sandstones deposited on the western Barents Shelf margin is evaluated through a sediment provenance study conducted on wellbore materials retrieved from Spitsbergen and from the Vestbakken Volcanic Province and the Sørvestsnaget Basin in the southwest Barents Sea. A variety of complementary techniques record a provenance change across the Paleocene-Eocene boundary in wellbore BH 10-2008, which samples Paleogene strata of the Central Tertiary Basin in Spitsbergen. Sandstones containing K-feldspar with radiogenic Pb isotopic compositions, chrome spinel in the heavy mineral assemblage, and detrital zircons and rutiles with prominent Palaeoproterozoic and Late Palaeozoic—Early Mesozoic U-Pb age populations are up-section replaced by sandstone containing albitic plagioclase feldspar, metasedimentary schist rock fragments, a heavy mineral assemblage with abundant chloritoid, metamorphic apatite with low REE contents, metapelitic rutile with Silurian U-Pb ages and zircons with predominantly Archaean and Palaeoproterozoic U-Pb age populations. Our results clearly demonstrate the well-known regional change in source area from an exposed Barents Shelf terrain east of the Central Tertiary Basin during the Paleocene to the emerging Eurekan mountains west and north of the Central Tertiary Basin during the Eocene. Eocene sandstones deposited in the marginal basins of the southwestern Barents Shelf, which were sampled in wellbores 7316/5-1 and 7216/11-1S, contain elements of both the Eurekan and the eastern Barents Shelf provenance signatures. The mixing of the two sand types and delivery to the southwest margin of the Barents Shelf is consistent with a fill and spill model for the Central Teritary Basin, with transport of Eurekan-derived sediment east then south hundreds of kilometres across the Shelf. Text Barents Sea Spitsbergen MDPI Open Access Publishing Barents Sea Vestbakken ENVELOPE(16.250,16.250,74.417,74.417) Sørvestsnaget ENVELOPE(17.500,17.500,73.667,73.667) Geosciences 13 3 91 |
institution |
Open Polar |
collection |
MDPI Open Access Publishing |
op_collection_id |
ftmdpi |
language |
English |
topic |
source-to-sink sediment provenance Eocene Paleogene Spitsbergen fold-and-thrust belt Central Tertiary Basin Torsk Formation |
spellingShingle |
source-to-sink sediment provenance Eocene Paleogene Spitsbergen fold-and-thrust belt Central Tertiary Basin Torsk Formation Michael J. Flowerdew Edward J. Fleming David M. Chew Andrew C. Morton Dirk Frei Aukje Benedictus Jenny Omma Teal. R. Riley Eszter Badenszki Martin J. Whitehouse The Importance of Eurekan Mountains on Cenozoic Sediment Routing on the Western Barents Shelf |
topic_facet |
source-to-sink sediment provenance Eocene Paleogene Spitsbergen fold-and-thrust belt Central Tertiary Basin Torsk Formation |
description |
The importance of topography generated by Eocene Eurekan deformation as a sediment source for sandstones deposited on the western Barents Shelf margin is evaluated through a sediment provenance study conducted on wellbore materials retrieved from Spitsbergen and from the Vestbakken Volcanic Province and the Sørvestsnaget Basin in the southwest Barents Sea. A variety of complementary techniques record a provenance change across the Paleocene-Eocene boundary in wellbore BH 10-2008, which samples Paleogene strata of the Central Tertiary Basin in Spitsbergen. Sandstones containing K-feldspar with radiogenic Pb isotopic compositions, chrome spinel in the heavy mineral assemblage, and detrital zircons and rutiles with prominent Palaeoproterozoic and Late Palaeozoic—Early Mesozoic U-Pb age populations are up-section replaced by sandstone containing albitic plagioclase feldspar, metasedimentary schist rock fragments, a heavy mineral assemblage with abundant chloritoid, metamorphic apatite with low REE contents, metapelitic rutile with Silurian U-Pb ages and zircons with predominantly Archaean and Palaeoproterozoic U-Pb age populations. Our results clearly demonstrate the well-known regional change in source area from an exposed Barents Shelf terrain east of the Central Tertiary Basin during the Paleocene to the emerging Eurekan mountains west and north of the Central Tertiary Basin during the Eocene. Eocene sandstones deposited in the marginal basins of the southwestern Barents Shelf, which were sampled in wellbores 7316/5-1 and 7216/11-1S, contain elements of both the Eurekan and the eastern Barents Shelf provenance signatures. The mixing of the two sand types and delivery to the southwest margin of the Barents Shelf is consistent with a fill and spill model for the Central Teritary Basin, with transport of Eurekan-derived sediment east then south hundreds of kilometres across the Shelf. |
format |
Text |
author |
Michael J. Flowerdew Edward J. Fleming David M. Chew Andrew C. Morton Dirk Frei Aukje Benedictus Jenny Omma Teal. R. Riley Eszter Badenszki Martin J. Whitehouse |
author_facet |
Michael J. Flowerdew Edward J. Fleming David M. Chew Andrew C. Morton Dirk Frei Aukje Benedictus Jenny Omma Teal. R. Riley Eszter Badenszki Martin J. Whitehouse |
author_sort |
Michael J. Flowerdew |
title |
The Importance of Eurekan Mountains on Cenozoic Sediment Routing on the Western Barents Shelf |
title_short |
The Importance of Eurekan Mountains on Cenozoic Sediment Routing on the Western Barents Shelf |
title_full |
The Importance of Eurekan Mountains on Cenozoic Sediment Routing on the Western Barents Shelf |
title_fullStr |
The Importance of Eurekan Mountains on Cenozoic Sediment Routing on the Western Barents Shelf |
title_full_unstemmed |
The Importance of Eurekan Mountains on Cenozoic Sediment Routing on the Western Barents Shelf |
title_sort |
importance of eurekan mountains on cenozoic sediment routing on the western barents shelf |
publisher |
Multidisciplinary Digital Publishing Institute |
publishDate |
2023 |
url |
https://doi.org/10.3390/geosciences13030091 |
op_coverage |
agris |
long_lat |
ENVELOPE(16.250,16.250,74.417,74.417) ENVELOPE(17.500,17.500,73.667,73.667) |
geographic |
Barents Sea Vestbakken Sørvestsnaget |
geographic_facet |
Barents Sea Vestbakken Sørvestsnaget |
genre |
Barents Sea Spitsbergen |
genre_facet |
Barents Sea Spitsbergen |
op_source |
Geosciences; Volume 13; Issue 3; Pages: 91 |
op_relation |
Sedimentology, Stratigraphy and Palaeontology https://dx.doi.org/10.3390/geosciences13030091 |
op_rights |
https://creativecommons.org/licenses/by/4.0/ |
op_doi |
https://doi.org/10.3390/geosciences13030091 |
container_title |
Geosciences |
container_volume |
13 |
container_issue |
3 |
container_start_page |
91 |
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1774716059361738752 |