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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ftoslouniv:oai:www.duo.uio.no:10852/73433 2023-05-15T15:39:10+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 2018-05-29T13:57:49Z http://hdl.handle.net/10852/73433 http://urn.nb.no/URN:NBN:no-76526 https://doi.org/10.1016/j.marpetgeo.2018.04.023 EN eng NFR/234152 http://urn.nb.no/URN:NBN:no-76526 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. Marine and Petroleum Geology. 2018, 95, 276-302 http://hdl.handle.net/10852/73433 1587464 info:ofi/fmt:kev:mtx:ctx&ctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=Marine and Petroleum Geology&rft.volume=95&rft.spage=276&rft.date=2018 Marine and Petroleum Geology 95 276 302 https://doi.org/10.1016/j.marpetgeo.2018.04.023 URN:NBN:no-76526 Fulltext https://www.duo.uio.no/bitstream/handle/10852/73433/2/Mulrooney%2Bet%2Bal%2B2018_post%2Bprint.pdf Attribution-NonCommercial-NoDerivatives 4.0 International https://creativecommons.org/licenses/by-nc-nd/4.0/ CC-BY-NC-ND 0264-8172 Journal article Tidsskriftartikkel Peer reviewed AcceptedVersion 2018 ftoslouniv https://doi.org/10.1016/j.marpetgeo.2018.04.023 2020-06-21T08:53:47Z 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 fold-and-thrust belt and/or the early Cimmerian tectonic phase in northern Europe. Article in Journal/Newspaper Barents Sea Fennoscandian Finnmark Hammerfest Hammerfest Basin Novaya Zemlya Storfjorden Storfjorden Finnmark Troms Universitet i Oslo: Digitale utgivelser ved UiO (DUO) 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 |
Universitet i Oslo: Digitale utgivelser ved UiO (DUO) |
op_collection_id |
ftoslouniv |
language |
English |
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 fold-and-thrust belt and/or the early Cimmerian tectonic phase in northern Europe. |
format |
Article in Journal/Newspaper |
author |
Mulrooney, Mark Rismyhr, Bjarte Yenwongfai, Honore Dzekamelive Leutscher, Johan Olaussen, Snorre Braathen, Alvar |
spellingShingle |
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 |
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 |
publishDate |
2018 |
url |
http://hdl.handle.net/10852/73433 http://urn.nb.no/URN:NBN:no-76526 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 |
0264-8172 |
op_relation |
NFR/234152 http://urn.nb.no/URN:NBN:no-76526 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. Marine and Petroleum Geology. 2018, 95, 276-302 http://hdl.handle.net/10852/73433 1587464 info:ofi/fmt:kev:mtx:ctx&ctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=Marine and Petroleum Geology&rft.volume=95&rft.spage=276&rft.date=2018 Marine and Petroleum Geology 95 276 302 https://doi.org/10.1016/j.marpetgeo.2018.04.023 URN:NBN:no-76526 Fulltext https://www.duo.uio.no/bitstream/handle/10852/73433/2/Mulrooney%2Bet%2Bal%2B2018_post%2Bprint.pdf |
op_rights |
Attribution-NonCommercial-NoDerivatives 4.0 International https://creativecommons.org/licenses/by-nc-nd/4.0/ |
op_rightsnorm |
CC-BY-NC-ND |
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 |
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1766370630807060480 |