Lithological description of subcropping Lower and Middle Triasic rocks from the Svalis Dome, Barents Sea
Eleven shallow cores display 315 m of the >700 m thick Lower and Middle Triasic successional of the Svalis Dome, a Salt diapir in the central south-western Barents Sea. The Svalis Dome was uplifted in the late Mesozoic. and Trisassic rocks suherop below Quaternary till around the Upper Palaeozoic...
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Norwegian Polar Institute
1999
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ftjpolarres:oai:journals.openacademia.net:article/2215 2023-05-15T15:08:57+02:00 Lithological description of subcropping Lower and Middle Triasic rocks from the Svalis Dome, Barents Sea Mørk, Atle Elvebakk, Geir 1999-01-06 application/pdf https://polarresearch.net/index.php/polar/article/view/2215 https://doi.org/10.3402/polar.v18i1.6559 eng eng Norwegian Polar Institute https://polarresearch.net/index.php/polar/article/view/2215/5466 https://polarresearch.net/index.php/polar/article/view/2215 doi:10.3402/polar.v18i1.6559 Copyright (c) 2018 Polar Research Polar Research; Vol. 18 No. 1 (1999); 83-104 1751-8369 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion 1999 ftjpolarres https://doi.org/10.3402/polar.v18i1.6559 2021-11-11T19:12:21Z Eleven shallow cores display 315 m of the >700 m thick Lower and Middle Triasic successional of the Svalis Dome, a Salt diapir in the central south-western Barents Sea. The Svalis Dome was uplifted in the late Mesozoic. and Trisassic rocks suherop below Quaternary till around the Upper Palaeozoic core of the dome. Deposition of the Triassic succession took place in deep shelf to basinal environments below storm wave base. The succession is dated by macrofossils and palynomorphs and can be assigned to four formations. The basal beds of the shaly greenish grey Havert Formation (Griesbachian) occur above Permian bioclastic carbonate. The Klappmyss Formation (Smithian) in the lower part contains gravity flow sands deposited as submarine fans pussible triggered by tectonic movements along the adjacent ault zones overlian by silty claystones. An organic-rich dark shale unit is here formally defined as the Steinkobbe overlain by silty claystones. An organic-rich dark shale unit is here formally defined as the Steinkobbe Formation, and was deposited in a large bight by restricted water circulation. The Snadd Formation. on top, representes a marine shelf unit deposited in front of an emerging land area in the north-east. A minimum of six higher order transgressive-regressive sequences are recognized at the Svalis Dome and these are correlated with other Arctic areas. Article in Journal/Newspaper Arctic Barents Sea Klappmyss Polar Research steinkobbe Polar Research (E-Journal) Arctic Barents Sea Overlian ENVELOPE(16.539,16.539,68.729,68.729) Polar Research 18 1 83 104 |
institution |
Open Polar |
collection |
Polar Research (E-Journal) |
op_collection_id |
ftjpolarres |
language |
English |
description |
Eleven shallow cores display 315 m of the >700 m thick Lower and Middle Triasic successional of the Svalis Dome, a Salt diapir in the central south-western Barents Sea. The Svalis Dome was uplifted in the late Mesozoic. and Trisassic rocks suherop below Quaternary till around the Upper Palaeozoic core of the dome. Deposition of the Triassic succession took place in deep shelf to basinal environments below storm wave base. The succession is dated by macrofossils and palynomorphs and can be assigned to four formations. The basal beds of the shaly greenish grey Havert Formation (Griesbachian) occur above Permian bioclastic carbonate. The Klappmyss Formation (Smithian) in the lower part contains gravity flow sands deposited as submarine fans pussible triggered by tectonic movements along the adjacent ault zones overlian by silty claystones. An organic-rich dark shale unit is here formally defined as the Steinkobbe overlain by silty claystones. An organic-rich dark shale unit is here formally defined as the Steinkobbe Formation, and was deposited in a large bight by restricted water circulation. The Snadd Formation. on top, representes a marine shelf unit deposited in front of an emerging land area in the north-east. A minimum of six higher order transgressive-regressive sequences are recognized at the Svalis Dome and these are correlated with other Arctic areas. |
format |
Article in Journal/Newspaper |
author |
Mørk, Atle Elvebakk, Geir |
spellingShingle |
Mørk, Atle Elvebakk, Geir Lithological description of subcropping Lower and Middle Triasic rocks from the Svalis Dome, Barents Sea |
author_facet |
Mørk, Atle Elvebakk, Geir |
author_sort |
Mørk, Atle |
title |
Lithological description of subcropping Lower and Middle Triasic rocks from the Svalis Dome, Barents Sea |
title_short |
Lithological description of subcropping Lower and Middle Triasic rocks from the Svalis Dome, Barents Sea |
title_full |
Lithological description of subcropping Lower and Middle Triasic rocks from the Svalis Dome, Barents Sea |
title_fullStr |
Lithological description of subcropping Lower and Middle Triasic rocks from the Svalis Dome, Barents Sea |
title_full_unstemmed |
Lithological description of subcropping Lower and Middle Triasic rocks from the Svalis Dome, Barents Sea |
title_sort |
lithological description of subcropping lower and middle triasic rocks from the svalis dome, barents sea |
publisher |
Norwegian Polar Institute |
publishDate |
1999 |
url |
https://polarresearch.net/index.php/polar/article/view/2215 https://doi.org/10.3402/polar.v18i1.6559 |
long_lat |
ENVELOPE(16.539,16.539,68.729,68.729) |
geographic |
Arctic Barents Sea Overlian |
geographic_facet |
Arctic Barents Sea Overlian |
genre |
Arctic Barents Sea Klappmyss Polar Research steinkobbe |
genre_facet |
Arctic Barents Sea Klappmyss Polar Research steinkobbe |
op_source |
Polar Research; Vol. 18 No. 1 (1999); 83-104 1751-8369 |
op_relation |
https://polarresearch.net/index.php/polar/article/view/2215/5466 https://polarresearch.net/index.php/polar/article/view/2215 doi:10.3402/polar.v18i1.6559 |
op_rights |
Copyright (c) 2018 Polar Research |
op_doi |
https://doi.org/10.3402/polar.v18i1.6559 |
container_title |
Polar Research |
container_volume |
18 |
container_issue |
1 |
container_start_page |
83 |
op_container_end_page |
104 |
_version_ |
1766340216152391680 |