Impacts of small-scale faults on continental to coastal plain deposition: Evidence from the Realgrunnen Subgroup in the Goliat field, southwest Barents Sea, Norway
In this study we synthesise sedimentological, fault, and Amplitude Versus Angle (AVA) analysis and propose that the Fruholmen and Tubåen formations (Realgrunnen Subgroup) are syn-kinematic deposits that record a previously undocumented early phase of Mesozoic rifting on the Troms-Finnmark fault Comp...
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Language: | English |
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Online Access: | https://hdl.handle.net/1956/20837 https://doi.org/10.1016/j.marpetgeo.2018.04.023 |
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ftunivbergen:oai:bora.uib.no:1956/20837 2023-05-15T15:39:09+02:00 Impacts of small-scale faults on continental to coastal plain deposition: Evidence from the Realgrunnen Subgroup in the Goliat field, southwest Barents Sea, Norway Mulrooney, Mark Rismyhr, Bjarte Yenwongfai, Honore Dzekamelive Leutscher, Johan Olaussen, Snorre Braathen, Alvar 2019-06-12T11:39:51Z application/pdf https://hdl.handle.net/1956/20837 https://doi.org/10.1016/j.marpetgeo.2018.04.023 eng eng Elsevier https://www.sciencedirect.com/science/article/pii/S0264817218301971 Norges forskningsråd: 234152 urn:issn:0264-8172 urn:issn:1873-4073 https://hdl.handle.net/1956/20837 https://doi.org/10.1016/j.marpetgeo.2018.04.023 cristin:1587464 Marine and Petroleum Geology. 2018;95:276-302 Attribution CC BY-NC-ND http://creativecommons.org/licenses/by-nc-nd/4.0/ Copyright 2018 Elsevier Marine and Petroleum Geology 276-302 95 Troms-finnmark fault complex Goliat field Hammerfest basin Barents shelf Multi-azimuth seismic Amplitude versus angle Peer reviewed Journal article 2019 ftunivbergen https://doi.org/10.1016/j.marpetgeo.2018.04.023 2023-03-14T17:40:18Z In this study we synthesise sedimentological, fault, and Amplitude Versus Angle (AVA) analysis and propose that the Fruholmen and Tubåen formations (Realgrunnen Subgroup) are syn-kinematic deposits that record a previously undocumented early phase of Mesozoic rifting on the Troms-Finnmark fault Complex and within the Hammerfest Basin. The Realgrunnen Subgroup hosts one of two Triassic reservoirs currently being produced in the Goliat field. Here, the subgroup sits unconformably on top of the Storfjorden Subgroup (Carnian Snadd Formation). Away from the Goliat field, which is characterised by a periclinal anticline, the Realgrunnen Subgroup also comprises the Lower–Middle Jurassic Nordmela and Stø formations. Sedimentological analysis of six exploration wells reveals that the Fruholmen Formation was deposited in a prodelta to delta plain environment where tide-influenced and fluvial-dominated distributary channels are represented by clay/siltstones and very fine grained sandstones. The overlying Tubåen Formation is characterised by medium to very coarse-grained deposits (locally conglomeratic) and represents a widespread braid plain with localised alluvial fans. Displacement profiles of faults and along-fault thickness variations demonstrate that an immature fault system was active during deposition of the Realgrunnen Subgroup. A series of unconnected fault segments hosted isolated sub-basins and erosional catchment areas in their hanging and footwalls, respectively. An AVA attribute map generated from a 10 ms interval of the uppermost part of the subgroup reveals gross sand-prone depositional bodies, i.e., individual and amalgamated channels, (some of which show meandering geometries), ox-bow lakes and alluvial fans. Sand bodies frequently show elongate geometries parallel to faults indicative of syn-depositional fault-related subsidence. Driving mechanisms responsible for the Norian to Rhaetian event may relate to contemporaneous rejuvenation of the Fennoscandian hinterland, development of the Novaya Zemlya ... Article in Journal/Newspaper Barents Sea Fennoscandian Finnmark Hammerfest Hammerfest Basin Novaya Zemlya Storfjorden Storfjorden Finnmark Troms University of Bergen: Bergen Open Research Archive (BORA-UiB) Barents Sea Nordmela ENVELOPE(15.675,15.675,69.134,69.134) Norway Stø ENVELOPE(15.124,15.124,69.019,69.019) Tubåen ENVELOPE(23.416,23.416,70.987,70.987) Marine and Petroleum Geology 95 276 302 |
institution |
Open Polar |
collection |
University of Bergen: Bergen Open Research Archive (BORA-UiB) |
op_collection_id |
ftunivbergen |
language |
English |
topic |
Troms-finnmark fault complex Goliat field Hammerfest basin Barents shelf Multi-azimuth seismic Amplitude versus angle |
spellingShingle |
Troms-finnmark fault complex Goliat field Hammerfest basin Barents shelf Multi-azimuth seismic Amplitude versus angle Mulrooney, Mark Rismyhr, Bjarte Yenwongfai, Honore Dzekamelive Leutscher, Johan Olaussen, Snorre Braathen, Alvar Impacts of small-scale faults on continental to coastal plain deposition: Evidence from the Realgrunnen Subgroup in the Goliat field, southwest Barents Sea, Norway |
topic_facet |
Troms-finnmark fault complex Goliat field Hammerfest basin Barents shelf Multi-azimuth seismic Amplitude versus angle |
description |
In this study we synthesise sedimentological, fault, and Amplitude Versus Angle (AVA) analysis and propose that the Fruholmen and Tubåen formations (Realgrunnen Subgroup) are syn-kinematic deposits that record a previously undocumented early phase of Mesozoic rifting on the Troms-Finnmark fault Complex and within the Hammerfest Basin. The Realgrunnen Subgroup hosts one of two Triassic reservoirs currently being produced in the Goliat field. Here, the subgroup sits unconformably on top of the Storfjorden Subgroup (Carnian Snadd Formation). Away from the Goliat field, which is characterised by a periclinal anticline, the Realgrunnen Subgroup also comprises the Lower–Middle Jurassic Nordmela and Stø formations. Sedimentological analysis of six exploration wells reveals that the Fruholmen Formation was deposited in a prodelta to delta plain environment where tide-influenced and fluvial-dominated distributary channels are represented by clay/siltstones and very fine grained sandstones. The overlying Tubåen Formation is characterised by medium to very coarse-grained deposits (locally conglomeratic) and represents a widespread braid plain with localised alluvial fans. Displacement profiles of faults and along-fault thickness variations demonstrate that an immature fault system was active during deposition of the Realgrunnen Subgroup. A series of unconnected fault segments hosted isolated sub-basins and erosional catchment areas in their hanging and footwalls, respectively. An AVA attribute map generated from a 10 ms interval of the uppermost part of the subgroup reveals gross sand-prone depositional bodies, i.e., individual and amalgamated channels, (some of which show meandering geometries), ox-bow lakes and alluvial fans. Sand bodies frequently show elongate geometries parallel to faults indicative of syn-depositional fault-related subsidence. Driving mechanisms responsible for the Norian to Rhaetian event may relate to contemporaneous rejuvenation of the Fennoscandian hinterland, development of the Novaya Zemlya ... |
format |
Article in Journal/Newspaper |
author |
Mulrooney, Mark Rismyhr, Bjarte Yenwongfai, Honore Dzekamelive Leutscher, Johan Olaussen, Snorre Braathen, Alvar |
author_facet |
Mulrooney, Mark Rismyhr, Bjarte Yenwongfai, Honore Dzekamelive Leutscher, Johan Olaussen, Snorre Braathen, Alvar |
author_sort |
Mulrooney, Mark |
title |
Impacts of small-scale faults on continental to coastal plain deposition: Evidence from the Realgrunnen Subgroup in the Goliat field, southwest Barents Sea, Norway |
title_short |
Impacts of small-scale faults on continental to coastal plain deposition: Evidence from the Realgrunnen Subgroup in the Goliat field, southwest Barents Sea, Norway |
title_full |
Impacts of small-scale faults on continental to coastal plain deposition: Evidence from the Realgrunnen Subgroup in the Goliat field, southwest Barents Sea, Norway |
title_fullStr |
Impacts of small-scale faults on continental to coastal plain deposition: Evidence from the Realgrunnen Subgroup in the Goliat field, southwest Barents Sea, Norway |
title_full_unstemmed |
Impacts of small-scale faults on continental to coastal plain deposition: Evidence from the Realgrunnen Subgroup in the Goliat field, southwest Barents Sea, Norway |
title_sort |
impacts of small-scale faults on continental to coastal plain deposition: evidence from the realgrunnen subgroup in the goliat field, southwest barents sea, norway |
publisher |
Elsevier |
publishDate |
2019 |
url |
https://hdl.handle.net/1956/20837 https://doi.org/10.1016/j.marpetgeo.2018.04.023 |
long_lat |
ENVELOPE(15.675,15.675,69.134,69.134) ENVELOPE(15.124,15.124,69.019,69.019) ENVELOPE(23.416,23.416,70.987,70.987) |
geographic |
Barents Sea Nordmela Norway Stø Tubåen |
geographic_facet |
Barents Sea Nordmela Norway Stø Tubåen |
genre |
Barents Sea Fennoscandian Finnmark Hammerfest Hammerfest Basin Novaya Zemlya Storfjorden Storfjorden Finnmark Troms |
genre_facet |
Barents Sea Fennoscandian Finnmark Hammerfest Hammerfest Basin Novaya Zemlya Storfjorden Storfjorden Finnmark Troms |
op_source |
Marine and Petroleum Geology 276-302 95 |
op_relation |
https://www.sciencedirect.com/science/article/pii/S0264817218301971 Norges forskningsråd: 234152 urn:issn:0264-8172 urn:issn:1873-4073 https://hdl.handle.net/1956/20837 https://doi.org/10.1016/j.marpetgeo.2018.04.023 cristin:1587464 Marine and Petroleum Geology. 2018;95:276-302 |
op_rights |
Attribution CC BY-NC-ND http://creativecommons.org/licenses/by-nc-nd/4.0/ Copyright 2018 Elsevier |
op_doi |
https://doi.org/10.1016/j.marpetgeo.2018.04.023 |
container_title |
Marine and Petroleum Geology |
container_volume |
95 |
container_start_page |
276 |
op_container_end_page |
302 |
_version_ |
1766370603084808192 |