Facies, Geometry and Paleogeography of the Eocene Battfjellet Formation, Longyearbyen Area, Svalbard
This MSc thesis investigates the facies and architecture variability of the Paleogene Battfjellet Formation in the Longyearbyen area on Svalbard, with the aim to complement the regional framework of the formation. Together with the offshore to deep water mudstones of the Frysjaodden Formation and th...
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The University of Bergen
2022
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ftunivbergen:oai:bora.uib.no:11250/3000804 2023-05-15T17:08:28+02:00 Facies, Geometry and Paleogeography of the Eocene Battfjellet Formation, Longyearbyen Area, Svalbard Næsheim, Sigrid Solem 2022-06-17T22:03:03Z application/pdf https://hdl.handle.net/11250/3000804 eng eng The University of Bergen https://hdl.handle.net/11250/3000804 Copyright the Author. All rights reserved 756199 Master thesis 2022 ftunivbergen 2023-03-14T17:42:42Z This MSc thesis investigates the facies and architecture variability of the Paleogene Battfjellet Formation in the Longyearbyen area on Svalbard, with the aim to complement the regional framework of the formation. Together with the offshore to deep water mudstones of the Frysjaodden Formation and the continental Aspelintoppen Formation, the shallow-marine Battfjellet Formation comprises the eastwards-prograding infill of the foredeep flanking the West Spitsbergen fold-and- thrust belt in the Eocene. Centimeter-scale lithostratigraphic logging and facies analysis have been performed in eight well-exposed outcrop localities. Lithostratigraphic logs have been combined with digital outcrop models obtained from photogrammetry, which allowed an accurate correlation of major depositional boundaries and architectural reconstruction of the deposits in the study area. A total of twelve sedimentary facies have been distinguished, indicating deposition and re- working by wave-generated unidirectional currents and oscillatory flows. Six facies associations (FA) and sub-associations have been established, each reflecting distinctive depositional environments by grouping spatially and genetically coherent facies: offshore to offshore transition zone (FA1), lower shoreface (FA2), upper shoreface, and foreshore (FA3-A), tidal inlet (FA3-B), terminal distributary channels (FA3-C), and floodplain (FA4). Five parasequences (P0-P4) were recognized from vertical and lateral facies variability. The facies and parasequence stacking pattern indicate deposition in a fluvio-wave interaction shelf delta with a flat to ascending shoreline trajectory. The parasequences are interpreted to have been deposited by elongated deltaic lobes that switched frequently due to channel avulsion on the lower delta plain. The observed facies assemblage, geometries, and interpreted paleogeography essentially converge with previous studies, with some exceptions. Two main differences are observed in the study area: (i) there are fewer but thicker ... Master Thesis Longyearbyen Svalbard Spitsbergen University of Bergen: Bergen Open Research Archive (BORA-UiB) Aspelintoppen ENVELOPE(16.750,16.750,77.767,77.767) Battfjellet ENVELOPE(16.192,16.192,78.063,78.063) Frysjaodden ENVELOPE(15.396,15.396,77.737,77.737) Longyearbyen Svalbard |
institution |
Open Polar |
collection |
University of Bergen: Bergen Open Research Archive (BORA-UiB) |
op_collection_id |
ftunivbergen |
language |
English |
topic |
756199 |
spellingShingle |
756199 Næsheim, Sigrid Solem Facies, Geometry and Paleogeography of the Eocene Battfjellet Formation, Longyearbyen Area, Svalbard |
topic_facet |
756199 |
description |
This MSc thesis investigates the facies and architecture variability of the Paleogene Battfjellet Formation in the Longyearbyen area on Svalbard, with the aim to complement the regional framework of the formation. Together with the offshore to deep water mudstones of the Frysjaodden Formation and the continental Aspelintoppen Formation, the shallow-marine Battfjellet Formation comprises the eastwards-prograding infill of the foredeep flanking the West Spitsbergen fold-and- thrust belt in the Eocene. Centimeter-scale lithostratigraphic logging and facies analysis have been performed in eight well-exposed outcrop localities. Lithostratigraphic logs have been combined with digital outcrop models obtained from photogrammetry, which allowed an accurate correlation of major depositional boundaries and architectural reconstruction of the deposits in the study area. A total of twelve sedimentary facies have been distinguished, indicating deposition and re- working by wave-generated unidirectional currents and oscillatory flows. Six facies associations (FA) and sub-associations have been established, each reflecting distinctive depositional environments by grouping spatially and genetically coherent facies: offshore to offshore transition zone (FA1), lower shoreface (FA2), upper shoreface, and foreshore (FA3-A), tidal inlet (FA3-B), terminal distributary channels (FA3-C), and floodplain (FA4). Five parasequences (P0-P4) were recognized from vertical and lateral facies variability. The facies and parasequence stacking pattern indicate deposition in a fluvio-wave interaction shelf delta with a flat to ascending shoreline trajectory. The parasequences are interpreted to have been deposited by elongated deltaic lobes that switched frequently due to channel avulsion on the lower delta plain. The observed facies assemblage, geometries, and interpreted paleogeography essentially converge with previous studies, with some exceptions. Two main differences are observed in the study area: (i) there are fewer but thicker ... |
format |
Master Thesis |
author |
Næsheim, Sigrid Solem |
author_facet |
Næsheim, Sigrid Solem |
author_sort |
Næsheim, Sigrid Solem |
title |
Facies, Geometry and Paleogeography of the Eocene Battfjellet Formation, Longyearbyen Area, Svalbard |
title_short |
Facies, Geometry and Paleogeography of the Eocene Battfjellet Formation, Longyearbyen Area, Svalbard |
title_full |
Facies, Geometry and Paleogeography of the Eocene Battfjellet Formation, Longyearbyen Area, Svalbard |
title_fullStr |
Facies, Geometry and Paleogeography of the Eocene Battfjellet Formation, Longyearbyen Area, Svalbard |
title_full_unstemmed |
Facies, Geometry and Paleogeography of the Eocene Battfjellet Formation, Longyearbyen Area, Svalbard |
title_sort |
facies, geometry and paleogeography of the eocene battfjellet formation, longyearbyen area, svalbard |
publisher |
The University of Bergen |
publishDate |
2022 |
url |
https://hdl.handle.net/11250/3000804 |
long_lat |
ENVELOPE(16.750,16.750,77.767,77.767) ENVELOPE(16.192,16.192,78.063,78.063) ENVELOPE(15.396,15.396,77.737,77.737) |
geographic |
Aspelintoppen Battfjellet Frysjaodden Longyearbyen Svalbard |
geographic_facet |
Aspelintoppen Battfjellet Frysjaodden Longyearbyen Svalbard |
genre |
Longyearbyen Svalbard Spitsbergen |
genre_facet |
Longyearbyen Svalbard Spitsbergen |
op_relation |
https://hdl.handle.net/11250/3000804 |
op_rights |
Copyright the Author. All rights reserved |
_version_ |
1766064250333167616 |