Multiscalar 3D temporal structural characterisation of Smøla island, mid-Norwegian passive margin: an analogue for unravelling the tectonic history of offshore basement highs.
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| Title: | Multiscalar 3D temporal structural characterisation of Smøla island, mid-Norwegian passive margin: an analogue for unravelling the tectonic history of offshore basement highs. |
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| Authors: | Hodge, Matthew S.1 (AUTHOR) matthew.hodge@unibo.it, Venvik, Guri2 (AUTHOR), Knies, Jochen2 (AUTHOR), van der Lelij, Roelant2 (AUTHOR), Schönenberger, Jasmin2 (AUTHOR), Nordgulen, Øystein2 (AUTHOR), Brönner, Marco2 (AUTHOR), Nasuti, Aziz2 (AUTHOR), Viola, Giulio1 (AUTHOR) |
| Source: | Solid Earth. 2024, Vol. 15 Issue 5, p589-615. 27p. |
| Subjects: | Fault gouge, Basements, Geometric modeling, Remote sensing, Islands, Geological time scales |
| Geographic Terms: | Greenland, Norway |
| Abstract: | Smøla island, situated within the mid-Norwegian passive margin, contains crystalline-basement-hosted intricate fracture and fault arrays formed during a polyphase brittle tectonic evolution. Its detailed study may strengthen correlation attempts between the well-exposed onshore domain and the inaccessible offshore domain, further the understanding of the passive margin evolution, and provide useful constraints on petrophysical properties of fractured basement blocks. A combination of geophysical and remote sensing lineament analysis, field mapping, high-resolution drill hole logging, 3D modelling, petrographic and microstructural studies, and fault gouge K–Ar geochronology made it possible to define five deformation episodes (D1 to D5). These episodes occurred between the post-Caledonian evolution of the regional-scale Møre–Trøndelag Fault Complex (MTFC) and the Late Cretaceous and younger crustal extension preceding the final stages of Greenland–Norway break-up. Each reconstructed deformation stage is associated with different structural features, fault and fracture geometries, and kinematic patterns. Synkinematic mineralisations evolved progressively from epidote–prehnite, sericite–chlorite–calcite, chlorite–hematite, hematite–zeolite–calcite, to quartz–calcite. K–Ar geochronology constrains brittle deformation to discrete localisation events spanning from the Carboniferous to the Late Cretaceous. Multiscalar geometrical modelling at scales of 100, 10, and 1 m helps constrain the extent and size of the deformation zones of each deformation episode, with D2 structures exhibiting the greatest strike continuity and D1 features the most localised. Overall, the approach highlighted here is of great utility for unravelling complex brittle tectonic histories within basement volumes. It is also a prerequisite to constrain the dynamic evolution of the petrophysical properties of basement blocks. [ABSTRACT FROM AUTHOR] |
| Copyright of Solid Earth is the property of Copernicus Gesellschaft mbH and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) | |
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| Header | DbId: egs DbLabel: Engineering Source An: 177930576 AccessLevel: 6 PubType: Academic Journal PubTypeId: academicJournal PreciseRelevancyScore: 0 |
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| Items | – Name: Title Label: Title Group: Ti Data: Multiscalar 3D temporal structural characterisation of Smøla island, mid-Norwegian passive margin: an analogue for unravelling the tectonic history of offshore basement highs. – Name: Author Label: Authors Group: Au Data: <searchLink fieldCode="AR" term="%22Hodge%2C+Matthew S%2E%22">Hodge, Matthew S.</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> matthew.hodge@unibo.it</i><br /><searchLink fieldCode="AR" term="%22Venvik%2C+Guri%22">Venvik, Guri</searchLink><relatesTo>2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Knies%2C+Jochen%22">Knies, Jochen</searchLink><relatesTo>2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22van der Lelij%2C+Roelant%22">van der Lelij, Roelant</searchLink><relatesTo>2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Schönenberger%2C+Jasmin%22">Schönenberger, Jasmin</searchLink><relatesTo>2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Nordgulen%2C+Øystein%22">Nordgulen, Øystein</searchLink><relatesTo>2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Brönner%2C+Marco%22">Brönner, Marco</searchLink><relatesTo>2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Nasuti%2C+Aziz%22">Nasuti, Aziz</searchLink><relatesTo>2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Viola%2C+Giulio%22">Viola, Giulio</searchLink><relatesTo>1</relatesTo> (AUTHOR) – Name: TitleSource Label: Source Group: Src Data: <searchLink fieldCode="JN" term="%22Solid+Earth%22">Solid Earth</searchLink>. 2024, Vol. 15 Issue 5, p589-615. 27p. – Name: Subject Label: Subjects Group: Su Data: <searchLink fieldCode="DE" term="%22Fault+gouge%22">Fault gouge</searchLink><br /><searchLink fieldCode="DE" term="%22Basements%22">Basements</searchLink><br /><searchLink fieldCode="DE" term="%22Geometric+modeling%22">Geometric modeling</searchLink><br /><searchLink fieldCode="DE" term="%22Remote+sensing%22">Remote sensing</searchLink><br /><searchLink fieldCode="DE" term="%22Islands%22">Islands</searchLink><br /><searchLink fieldCode="DE" term="%22Geological+time+scales%22">Geological time scales</searchLink> – Name: SubjectGeographic Label: Geographic Terms Group: Su Data: <searchLink fieldCode="DE" term="%22Greenland%22">Greenland</searchLink><br /><searchLink fieldCode="DE" term="%22Norway%22">Norway</searchLink> – Name: Abstract Label: Abstract Group: Ab Data: Smøla island, situated within the mid-Norwegian passive margin, contains crystalline-basement-hosted intricate fracture and fault arrays formed during a polyphase brittle tectonic evolution. Its detailed study may strengthen correlation attempts between the well-exposed onshore domain and the inaccessible offshore domain, further the understanding of the passive margin evolution, and provide useful constraints on petrophysical properties of fractured basement blocks. A combination of geophysical and remote sensing lineament analysis, field mapping, high-resolution drill hole logging, 3D modelling, petrographic and microstructural studies, and fault gouge K–Ar geochronology made it possible to define five deformation episodes (D1 to D5). These episodes occurred between the post-Caledonian evolution of the regional-scale Møre–Trøndelag Fault Complex (MTFC) and the Late Cretaceous and younger crustal extension preceding the final stages of Greenland–Norway break-up. Each reconstructed deformation stage is associated with different structural features, fault and fracture geometries, and kinematic patterns. Synkinematic mineralisations evolved progressively from epidote–prehnite, sericite–chlorite–calcite, chlorite–hematite, hematite–zeolite–calcite, to quartz–calcite. K–Ar geochronology constrains brittle deformation to discrete localisation events spanning from the Carboniferous to the Late Cretaceous. Multiscalar geometrical modelling at scales of 100, 10, and 1 m helps constrain the extent and size of the deformation zones of each deformation episode, with D2 structures exhibiting the greatest strike continuity and D1 features the most localised. Overall, the approach highlighted here is of great utility for unravelling complex brittle tectonic histories within basement volumes. It is also a prerequisite to constrain the dynamic evolution of the petrophysical properties of basement blocks. [ABSTRACT FROM AUTHOR] – Name: AbstractSuppliedCopyright Label: Group: Ab Data: <i>Copyright of Solid Earth is the property of Copernicus Gesellschaft mbH and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.) |
| PLink | https://search.ebscohost.com/login.aspx?direct=true&site=eds-live&db=egs&AN=177930576 |
| RecordInfo | BibRecord: BibEntity: Identifiers: – Type: doi Value: 10.5194/se-15-589-2024 Languages: – Code: eng Text: English PhysicalDescription: Pagination: PageCount: 27 StartPage: 589 Subjects: – SubjectFull: Fault gouge Type: general – SubjectFull: Basements Type: general – SubjectFull: Geometric modeling Type: general – SubjectFull: Remote sensing Type: general – SubjectFull: Islands Type: general – SubjectFull: Geological time scales Type: general – SubjectFull: Greenland Type: general – SubjectFull: Norway Type: general Titles: – TitleFull: Multiscalar 3D temporal structural characterisation of Smøla island, mid-Norwegian passive margin: an analogue for unravelling the tectonic history of offshore basement highs. Type: main BibRelationships: HasContributorRelationships: – PersonEntity: Name: NameFull: Hodge, Matthew S. – PersonEntity: Name: NameFull: Venvik, Guri – PersonEntity: Name: NameFull: Knies, Jochen – PersonEntity: Name: NameFull: van der Lelij, Roelant – PersonEntity: Name: NameFull: Schönenberger, Jasmin – PersonEntity: Name: NameFull: Nordgulen, Øystein – PersonEntity: Name: NameFull: Brönner, Marco – PersonEntity: Name: NameFull: Nasuti, Aziz – PersonEntity: Name: NameFull: Viola, Giulio IsPartOfRelationships: – BibEntity: Dates: – D: 01 M: 05 Text: 2024 Type: published Y: 2024 Identifiers: – Type: issn-print Value: 18699510 Numbering: – Type: volume Value: 15 – Type: issue Value: 5 Titles: – TitleFull: Solid Earth Type: main |
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