Geochemical composition of surface sediments in the Trondheimsfjord, central Norway
High sedimentation rates in fjords provide excellent possibilities for high resolution sedimentary and geochemical records over the Holocene. As a baseline for an improved interpretation of geochemical data from fjord sediment cores, this study aims to investigate the inorganic/organic geochemistry...
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ftpangaea:oai:pangaea.de:doi:10.1594/PANGAEA.808233 2023-05-15T17:47:07+02:00 Geochemical composition of surface sediments in the Trondheimsfjord, central Norway Faust, Johan C Knies, Jochen Slagstad, Trond Vogt, Christoph Milzer, Gesa Giraudeau, Jacques MEDIAN LATITUDE: 63.607000 * MEDIAN LONGITUDE: 9.486982 * SOUTH-BOUND LATITUDE: 62.386610 * WEST-BOUND LONGITUDE: 3.489440 * NORTH-BOUND LATITUDE: 64.299170 * EAST-BOUND LONGITUDE: 11.438200 2014-03-01 application/zip, 5 datasets https://doi.pangaea.de/10.1594/PANGAEA.808233 https://doi.org/10.1594/PANGAEA.808233 en eng PANGAEA https://doi.pangaea.de/10.1594/PANGAEA.808233 https://doi.org/10.1594/PANGAEA.808233 CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess CC-BY Supplement to: Faust, Johan C; Knies, Jochen; Slagstad, Trond; Vogt, Christoph; Milzer, Gesa; Giraudeau, Jacques (2014): Geochemical composition of Trondheimsfjord surface sediments: Sources and spatial variability of marine and terrigenous components. Continental Shelf Research, 88, 61-71, https://doi.org/10.1016/j.csr.2014.07.008 trondheimsfjord Norway Dataset 2014 ftpangaea https://doi.org/10.1594/PANGAEA.808233 https://doi.org/10.1016/j.csr.2014.07.008 2023-01-20T07:32:55Z High sedimentation rates in fjords provide excellent possibilities for high resolution sedimentary and geochemical records over the Holocene. As a baseline for an improved interpretation of geochemical data from fjord sediment cores, this study aims to investigate the inorganic/organic geochemistry of surface sediments and to identify geochemical proxies for terrestrial input and river discharge in the Trondheimsfjord, central Norway. Sixty evenly distributed surface sediment samples were analysed for their elemental composition, total organic carbon (Corg), nitrogen (Norg) and organic carbon stable isotopes (d13Corg), bulk mineral composition and grain size distribution. Our results indicate carbonate marine productivity to be the main CaCO3 source. Also, a strong decreasing gradient of marine-derived organic matter from the entrance towards the fjord inner part is consistent with modern primary production data. We show that the origin of the organic matter as well as the distribution of CaCO3 in Trondheimsfjord sediments can be used as a proxy for the variable inflow of Atlantic water and changes in river runoff. Furthermore, the comparison of grain size independent Al-based trace element ratios with geochemical analysis from terrigenous sediments and bedrocks provides evidence that the distribution of K/Al, Ni/Al and K/Ni in the fjord sediments reflect regional sources of K and Ni in the northern and southern drainage basin of the Trondheimsfjord. Applying these findings to temporally well-constrained sediment records will provide important insights into both the palaeoenvironmental changes of the hinterland and the palaeoceanographic modifications in the Norwegian Sea as response to rapid climate changes and associated feedback mechanisms. Dataset Norwegian Sea PANGAEA - Data Publisher for Earth & Environmental Science Norwegian Sea Norway ENVELOPE(3.489440,11.438200,64.299170,62.386610) |
institution |
Open Polar |
collection |
PANGAEA - Data Publisher for Earth & Environmental Science |
op_collection_id |
ftpangaea |
language |
English |
topic |
trondheimsfjord Norway |
spellingShingle |
trondheimsfjord Norway Faust, Johan C Knies, Jochen Slagstad, Trond Vogt, Christoph Milzer, Gesa Giraudeau, Jacques Geochemical composition of surface sediments in the Trondheimsfjord, central Norway |
topic_facet |
trondheimsfjord Norway |
description |
High sedimentation rates in fjords provide excellent possibilities for high resolution sedimentary and geochemical records over the Holocene. As a baseline for an improved interpretation of geochemical data from fjord sediment cores, this study aims to investigate the inorganic/organic geochemistry of surface sediments and to identify geochemical proxies for terrestrial input and river discharge in the Trondheimsfjord, central Norway. Sixty evenly distributed surface sediment samples were analysed for their elemental composition, total organic carbon (Corg), nitrogen (Norg) and organic carbon stable isotopes (d13Corg), bulk mineral composition and grain size distribution. Our results indicate carbonate marine productivity to be the main CaCO3 source. Also, a strong decreasing gradient of marine-derived organic matter from the entrance towards the fjord inner part is consistent with modern primary production data. We show that the origin of the organic matter as well as the distribution of CaCO3 in Trondheimsfjord sediments can be used as a proxy for the variable inflow of Atlantic water and changes in river runoff. Furthermore, the comparison of grain size independent Al-based trace element ratios with geochemical analysis from terrigenous sediments and bedrocks provides evidence that the distribution of K/Al, Ni/Al and K/Ni in the fjord sediments reflect regional sources of K and Ni in the northern and southern drainage basin of the Trondheimsfjord. Applying these findings to temporally well-constrained sediment records will provide important insights into both the palaeoenvironmental changes of the hinterland and the palaeoceanographic modifications in the Norwegian Sea as response to rapid climate changes and associated feedback mechanisms. |
format |
Dataset |
author |
Faust, Johan C Knies, Jochen Slagstad, Trond Vogt, Christoph Milzer, Gesa Giraudeau, Jacques |
author_facet |
Faust, Johan C Knies, Jochen Slagstad, Trond Vogt, Christoph Milzer, Gesa Giraudeau, Jacques |
author_sort |
Faust, Johan C |
title |
Geochemical composition of surface sediments in the Trondheimsfjord, central Norway |
title_short |
Geochemical composition of surface sediments in the Trondheimsfjord, central Norway |
title_full |
Geochemical composition of surface sediments in the Trondheimsfjord, central Norway |
title_fullStr |
Geochemical composition of surface sediments in the Trondheimsfjord, central Norway |
title_full_unstemmed |
Geochemical composition of surface sediments in the Trondheimsfjord, central Norway |
title_sort |
geochemical composition of surface sediments in the trondheimsfjord, central norway |
publisher |
PANGAEA |
publishDate |
2014 |
url |
https://doi.pangaea.de/10.1594/PANGAEA.808233 https://doi.org/10.1594/PANGAEA.808233 |
op_coverage |
MEDIAN LATITUDE: 63.607000 * MEDIAN LONGITUDE: 9.486982 * SOUTH-BOUND LATITUDE: 62.386610 * WEST-BOUND LONGITUDE: 3.489440 * NORTH-BOUND LATITUDE: 64.299170 * EAST-BOUND LONGITUDE: 11.438200 |
long_lat |
ENVELOPE(3.489440,11.438200,64.299170,62.386610) |
geographic |
Norwegian Sea Norway |
geographic_facet |
Norwegian Sea Norway |
genre |
Norwegian Sea |
genre_facet |
Norwegian Sea |
op_source |
Supplement to: Faust, Johan C; Knies, Jochen; Slagstad, Trond; Vogt, Christoph; Milzer, Gesa; Giraudeau, Jacques (2014): Geochemical composition of Trondheimsfjord surface sediments: Sources and spatial variability of marine and terrigenous components. Continental Shelf Research, 88, 61-71, https://doi.org/10.1016/j.csr.2014.07.008 |
op_relation |
https://doi.pangaea.de/10.1594/PANGAEA.808233 https://doi.org/10.1594/PANGAEA.808233 |
op_rights |
CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1594/PANGAEA.808233 https://doi.org/10.1016/j.csr.2014.07.008 |
_version_ |
1766151441170300928 |