The pre-breakup stratigraphy and petroleum system of the Southern Jan Mayen Ridge revealed by seafloor sampling
The Jan Mayen Microplate Complex (JMMC) in the NE Atlantic is interpreted to mostly consist of continental fragments with possible interstitial embryonic oceanic crust. A complex Cenozoic rifting history accompanied by extensive extrusive and intrusive volcanism have made the geological characteriza...
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ftqueensland:oai:eprints.qut.edu.au:121553 2024-02-04T10:01:41+01:00 The pre-breakup stratigraphy and petroleum system of the Southern Jan Mayen Ridge revealed by seafloor sampling Polteau, Stephane Mazzini, Adriano Hansen, Geir Planke, Sverre Jerram, Dougal Millett, John Abdelmalak, Mohamed Mansour Blischke, Anett Myklebust, Reidun 2019-06-05 application/pdf https://eprints.qut.edu.au/121553/ unknown Elsevier https://eprints.qut.edu.au/121553/7/Pre%20break-up.pdf doi:10.1016/j.tecto.2018.04.016 Polteau, Stephane, Mazzini, Adriano, Hansen, Geir, Planke, Sverre, Jerram, Dougal, Millett, John, Abdelmalak, Mohamed Mansour, Blischke, Anett, & Myklebust, Reidun (2019) The pre-breakup stratigraphy and petroleum system of the Southern Jan Mayen Ridge revealed by seafloor sampling. Tectonophysics, 760, pp. 152-164. https://eprints.qut.edu.au/121553/ Science & Engineering Faculty; School of Earth, Environmental & Biological Sciences free_to_read http://creativecommons.org/licenses/by-nc-nd/4.0/ Consult author(s) regarding copyright matters This work is covered by copyright. Unless the document is being made available under a Creative Commons Licence, you must assume that re-use is limited to personal use and that permission from the copyright owner must be obtained for all other uses. If the document is available under a Creative Commons License (or other specified license) then refer to the Licence for details of permitted re-use. It is a condition of access that users recognise and abide by the legal requirements associated with these rights. If you believe that this work infringes copyright please provide details by email to qut.copyright@qut.edu.au Tectonophysics Breakup Jan Mayen microplate complex Jurassic NE Atlantic Petroleum system Pre-breakup Seafloor sampling Sub-basalt Contribution to Journal 2019 ftqueensland https://doi.org/10.1016/j.tecto.2018.04.016 2024-01-08T23:43:33Z The Jan Mayen Microplate Complex (JMMC) in the NE Atlantic is interpreted to mostly consist of continental fragments with possible interstitial embryonic oceanic crust. A complex Cenozoic rifting history accompanied by extensive extrusive and intrusive volcanism have made the geological characterization of the JMMC challenging especially due to poor seismic imaging beneath the breakup basalt succession. The presence of continental crust in the JMMC is inferred by seismic and magnetic data, but ground truthing evidence have yet to be provided. Here, we present the results from a seafloor sampling campaign undertaken in 2011 on the Southern Jan Mayen Ridge complex. Seabed samples were recovered using a gravity corer and a dredge along a 1000 m high escarpment with a 19° slope. Sampling locations were selected based on the interpretation of seismic profiles that suggest the presence of possible pre-breakup successions outcropping along this steep escarpment. Results include a sequence of samples with age diagnostic palynomorph assemblages ranging from Permian/Triassic to Eocene, and including igneous samples related to the Early Eocene breakup volcanism. Importantly, the samples were retrieved from hard substrate in an erosional gully lacking overburden sediments and have ages arranged in younging upward sequential order, supporting their near in-situ position. The sampling results were integrated into a lithostratigraphic pseudo-well that can be used to constrain the evolution and breakup of the JMMC. Additionally, evidence for active migration of Jurassic sourced hydrocarbons comprise the first indication of a working hydrocarbon system, with important implications for the petroleum prospectivity of the Dreki area. Finally, these results confirm that the Southern Jan Mayen Ridge is indeed a sliver of continental crust. Article in Journal/Newspaper Jan Mayen Queensland University of Technology: QUT ePrints Jan Mayen Jan Mayen Ridge ENVELOPE(-8.000,-8.000,69.000,69.000) Tectonophysics 760 152 164 |
institution |
Open Polar |
collection |
Queensland University of Technology: QUT ePrints |
op_collection_id |
ftqueensland |
language |
unknown |
topic |
Breakup Jan Mayen microplate complex Jurassic NE Atlantic Petroleum system Pre-breakup Seafloor sampling Sub-basalt |
spellingShingle |
Breakup Jan Mayen microplate complex Jurassic NE Atlantic Petroleum system Pre-breakup Seafloor sampling Sub-basalt Polteau, Stephane Mazzini, Adriano Hansen, Geir Planke, Sverre Jerram, Dougal Millett, John Abdelmalak, Mohamed Mansour Blischke, Anett Myklebust, Reidun The pre-breakup stratigraphy and petroleum system of the Southern Jan Mayen Ridge revealed by seafloor sampling |
topic_facet |
Breakup Jan Mayen microplate complex Jurassic NE Atlantic Petroleum system Pre-breakup Seafloor sampling Sub-basalt |
description |
The Jan Mayen Microplate Complex (JMMC) in the NE Atlantic is interpreted to mostly consist of continental fragments with possible interstitial embryonic oceanic crust. A complex Cenozoic rifting history accompanied by extensive extrusive and intrusive volcanism have made the geological characterization of the JMMC challenging especially due to poor seismic imaging beneath the breakup basalt succession. The presence of continental crust in the JMMC is inferred by seismic and magnetic data, but ground truthing evidence have yet to be provided. Here, we present the results from a seafloor sampling campaign undertaken in 2011 on the Southern Jan Mayen Ridge complex. Seabed samples were recovered using a gravity corer and a dredge along a 1000 m high escarpment with a 19° slope. Sampling locations were selected based on the interpretation of seismic profiles that suggest the presence of possible pre-breakup successions outcropping along this steep escarpment. Results include a sequence of samples with age diagnostic palynomorph assemblages ranging from Permian/Triassic to Eocene, and including igneous samples related to the Early Eocene breakup volcanism. Importantly, the samples were retrieved from hard substrate in an erosional gully lacking overburden sediments and have ages arranged in younging upward sequential order, supporting their near in-situ position. The sampling results were integrated into a lithostratigraphic pseudo-well that can be used to constrain the evolution and breakup of the JMMC. Additionally, evidence for active migration of Jurassic sourced hydrocarbons comprise the first indication of a working hydrocarbon system, with important implications for the petroleum prospectivity of the Dreki area. Finally, these results confirm that the Southern Jan Mayen Ridge is indeed a sliver of continental crust. |
format |
Article in Journal/Newspaper |
author |
Polteau, Stephane Mazzini, Adriano Hansen, Geir Planke, Sverre Jerram, Dougal Millett, John Abdelmalak, Mohamed Mansour Blischke, Anett Myklebust, Reidun |
author_facet |
Polteau, Stephane Mazzini, Adriano Hansen, Geir Planke, Sverre Jerram, Dougal Millett, John Abdelmalak, Mohamed Mansour Blischke, Anett Myklebust, Reidun |
author_sort |
Polteau, Stephane |
title |
The pre-breakup stratigraphy and petroleum system of the Southern Jan Mayen Ridge revealed by seafloor sampling |
title_short |
The pre-breakup stratigraphy and petroleum system of the Southern Jan Mayen Ridge revealed by seafloor sampling |
title_full |
The pre-breakup stratigraphy and petroleum system of the Southern Jan Mayen Ridge revealed by seafloor sampling |
title_fullStr |
The pre-breakup stratigraphy and petroleum system of the Southern Jan Mayen Ridge revealed by seafloor sampling |
title_full_unstemmed |
The pre-breakup stratigraphy and petroleum system of the Southern Jan Mayen Ridge revealed by seafloor sampling |
title_sort |
pre-breakup stratigraphy and petroleum system of the southern jan mayen ridge revealed by seafloor sampling |
publisher |
Elsevier |
publishDate |
2019 |
url |
https://eprints.qut.edu.au/121553/ |
long_lat |
ENVELOPE(-8.000,-8.000,69.000,69.000) |
geographic |
Jan Mayen Jan Mayen Ridge |
geographic_facet |
Jan Mayen Jan Mayen Ridge |
genre |
Jan Mayen |
genre_facet |
Jan Mayen |
op_source |
Tectonophysics |
op_relation |
https://eprints.qut.edu.au/121553/7/Pre%20break-up.pdf doi:10.1016/j.tecto.2018.04.016 Polteau, Stephane, Mazzini, Adriano, Hansen, Geir, Planke, Sverre, Jerram, Dougal, Millett, John, Abdelmalak, Mohamed Mansour, Blischke, Anett, & Myklebust, Reidun (2019) The pre-breakup stratigraphy and petroleum system of the Southern Jan Mayen Ridge revealed by seafloor sampling. Tectonophysics, 760, pp. 152-164. https://eprints.qut.edu.au/121553/ Science & Engineering Faculty; School of Earth, Environmental & Biological Sciences |
op_rights |
free_to_read http://creativecommons.org/licenses/by-nc-nd/4.0/ Consult author(s) regarding copyright matters This work is covered by copyright. Unless the document is being made available under a Creative Commons Licence, you must assume that re-use is limited to personal use and that permission from the copyright owner must be obtained for all other uses. If the document is available under a Creative Commons License (or other specified license) then refer to the Licence for details of permitted re-use. It is a condition of access that users recognise and abide by the legal requirements associated with these rights. If you believe that this work infringes copyright please provide details by email to qut.copyright@qut.edu.au |
op_doi |
https://doi.org/10.1016/j.tecto.2018.04.016 |
container_title |
Tectonophysics |
container_volume |
760 |
container_start_page |
152 |
op_container_end_page |
164 |
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1789967812059463680 |