Dinoflagellate cyst stratigraphy and palaeoenvironment of the "Utsira Sand" in the northern North Sea
Safe CO_2 storage in the Utsira Formation is one of many solutions to climate change mitigation. A major leakage had occurred in the Utsira Formation in 2008, due to water injection in what was believed to be the Utsira Formation. Studies indicated that the rock formation for injection of produced w...
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The University of Bergen
2014
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ftunivbergen:oai:bora.uib.no:1956/9205 2023-05-15T17:24:41+02:00 Dinoflagellate cyst stratigraphy and palaeoenvironment of the "Utsira Sand" in the northern North Sea Al-Saadi, Lubna Sami Jawad 2014-11-20 2694428 bytes application/pdf https://hdl.handle.net/1956/9205 eng eng The University of Bergen https://hdl.handle.net/1956/9205 Copyright the author. All rights reserved palynologi http://data.ub.uio.no/realfagstermer/c030209 http://data.ub.uio.no/realfagstermer/c013391 756199 Master thesis 2014 ftunivbergen 2023-03-14T17:45:00Z Safe CO_2 storage in the Utsira Formation is one of many solutions to climate change mitigation. A major leakage had occurred in the Utsira Formation in 2008, due to water injection in what was believed to be the Utsira Formation. Studies indicated that the rock formation for injection of produced water was not appropriate, and this reflected poor understanding of the stratigraphy of the Tampen area (North Sea). Thirteen palynological samples between 1125.65 and 1141.65 m of well 34/8-A-33H in the Tampen area, northern North Sea have been studied in order to understand the stratigraphy and provide information on age and palaeoenvironment. The studied interval is mapped as the Utsira Formation. The investigated interval was dated to 2.6 -3.7 Ma (late Pliocene) based on dinoflagellate cysts and acritarchs, such as Operculodinium? eirikianum, Operculodinium centrocarpum, Bitectatodinium raedwaldii, Lingulodinium machaerophorum, Cymatiosphaera? invaginata and Lavradosphaera crista which were correlated to stratigraphic ranges from reference sections in the North Atlantic Sea and adjacent seas. The absence of typical early Pliocene species (Batiacasphaera minuta, Corrudinium devemaliae, Echinidinium euaxum, Operculodinium tegillatum, Pyxidinopsis vesiculata, Bitectatodinium serratum and Reticulatosphaera actinocoronata) in the studied interval supports this conclusion. According to the marine dinoflagellate cysts and terrestrial palynomorphs (pollen and spores), and depending on palaeoenvironmental indices (Sporomorph / Dinoflagellate cyst index, Warm / Cold index, Inner neritic / Oceanic, Outer neritic / Oceanic, Neritic /Oceanic and Inner neritic / Outer neritic index, Gonyaulacoid / Protoperidinioid index), the palaeoenvironment is shown to be an outer neritic setting with warm to temperate conditions. The studied interval well 15/9-A23 (Piasecki et al., 2002) was estimated to be early Pliocene, and the core dinoflagellate cyst assemblages indicated outer shelf deposition under cool climate. The Nordland Group ... Master Thesis Nordland Nordland North Atlantic Nordland University of Bergen: Bergen Open Research Archive (BORA-UiB) Tampen ENVELOPE(9.667,9.667,78.167,78.167) Utsira ENVELOPE(21.477,21.477,77.149,77.149) |
institution |
Open Polar |
collection |
University of Bergen: Bergen Open Research Archive (BORA-UiB) |
op_collection_id |
ftunivbergen |
language |
English |
topic |
palynologi http://data.ub.uio.no/realfagstermer/c030209 http://data.ub.uio.no/realfagstermer/c013391 756199 |
spellingShingle |
palynologi http://data.ub.uio.no/realfagstermer/c030209 http://data.ub.uio.no/realfagstermer/c013391 756199 Al-Saadi, Lubna Sami Jawad Dinoflagellate cyst stratigraphy and palaeoenvironment of the "Utsira Sand" in the northern North Sea |
topic_facet |
palynologi http://data.ub.uio.no/realfagstermer/c030209 http://data.ub.uio.no/realfagstermer/c013391 756199 |
description |
Safe CO_2 storage in the Utsira Formation is one of many solutions to climate change mitigation. A major leakage had occurred in the Utsira Formation in 2008, due to water injection in what was believed to be the Utsira Formation. Studies indicated that the rock formation for injection of produced water was not appropriate, and this reflected poor understanding of the stratigraphy of the Tampen area (North Sea). Thirteen palynological samples between 1125.65 and 1141.65 m of well 34/8-A-33H in the Tampen area, northern North Sea have been studied in order to understand the stratigraphy and provide information on age and palaeoenvironment. The studied interval is mapped as the Utsira Formation. The investigated interval was dated to 2.6 -3.7 Ma (late Pliocene) based on dinoflagellate cysts and acritarchs, such as Operculodinium? eirikianum, Operculodinium centrocarpum, Bitectatodinium raedwaldii, Lingulodinium machaerophorum, Cymatiosphaera? invaginata and Lavradosphaera crista which were correlated to stratigraphic ranges from reference sections in the North Atlantic Sea and adjacent seas. The absence of typical early Pliocene species (Batiacasphaera minuta, Corrudinium devemaliae, Echinidinium euaxum, Operculodinium tegillatum, Pyxidinopsis vesiculata, Bitectatodinium serratum and Reticulatosphaera actinocoronata) in the studied interval supports this conclusion. According to the marine dinoflagellate cysts and terrestrial palynomorphs (pollen and spores), and depending on palaeoenvironmental indices (Sporomorph / Dinoflagellate cyst index, Warm / Cold index, Inner neritic / Oceanic, Outer neritic / Oceanic, Neritic /Oceanic and Inner neritic / Outer neritic index, Gonyaulacoid / Protoperidinioid index), the palaeoenvironment is shown to be an outer neritic setting with warm to temperate conditions. The studied interval well 15/9-A23 (Piasecki et al., 2002) was estimated to be early Pliocene, and the core dinoflagellate cyst assemblages indicated outer shelf deposition under cool climate. The Nordland Group ... |
format |
Master Thesis |
author |
Al-Saadi, Lubna Sami Jawad |
author_facet |
Al-Saadi, Lubna Sami Jawad |
author_sort |
Al-Saadi, Lubna Sami Jawad |
title |
Dinoflagellate cyst stratigraphy and palaeoenvironment of the "Utsira Sand" in the northern North Sea |
title_short |
Dinoflagellate cyst stratigraphy and palaeoenvironment of the "Utsira Sand" in the northern North Sea |
title_full |
Dinoflagellate cyst stratigraphy and palaeoenvironment of the "Utsira Sand" in the northern North Sea |
title_fullStr |
Dinoflagellate cyst stratigraphy and palaeoenvironment of the "Utsira Sand" in the northern North Sea |
title_full_unstemmed |
Dinoflagellate cyst stratigraphy and palaeoenvironment of the "Utsira Sand" in the northern North Sea |
title_sort |
dinoflagellate cyst stratigraphy and palaeoenvironment of the "utsira sand" in the northern north sea |
publisher |
The University of Bergen |
publishDate |
2014 |
url |
https://hdl.handle.net/1956/9205 |
long_lat |
ENVELOPE(9.667,9.667,78.167,78.167) ENVELOPE(21.477,21.477,77.149,77.149) |
geographic |
Tampen Utsira |
geographic_facet |
Tampen Utsira |
genre |
Nordland Nordland North Atlantic Nordland |
genre_facet |
Nordland Nordland North Atlantic Nordland |
op_relation |
https://hdl.handle.net/1956/9205 |
op_rights |
Copyright the author. All rights reserved |
_version_ |
1766115790414675968 |