A new look at reflection seismic data from the Central Caledonian Transect across the Scandinavian Peninsula.
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| Title: | A new look at reflection seismic data from the Central Caledonian Transect across the Scandinavian Peninsula. |
|---|---|
| Authors: | Juhlin, Christopher1 (AUTHOR) christopher.juhlin@geo.uu.se, Lescoutre, Rodolphe2 (AUTHOR), Almqvist, Bjarne1 (AUTHOR) |
| Source: | Solid Earth. 2025, Vol. 16 Issue 8, p775-784. 10p. |
| Subjects: | Seismic reflection method, Geological modeling, Physiographic provinces, Resampling (Statistics), Igneous intrusions, Geological research, Neotectonics |
| Geographic Terms: | Scandinavia |
| Abstract: | This study revisits seismic reflection data from the Central Scandinavian Caledonides, initially acquired during campaigns in the late 1980s and early 1990s. Previous analyses faced challenges in merging and imaging due to varying trace spacing and data gaps, particularly in the western parts. To address these limitations, we spatially resampled the data to a consistent trace spacing, carefully merged segments, and migrated the entire merged section. This approach resulted in a revised seismic profile, with notable changes in the western section where the image reveals key differences compared to earlier interpretations. The updated profile indicates near-continuous reflections across merged segments, resolving issues of abrupt breaks present in some prior publications. Enhanced imaging in the western section unveils new structural details, including collapsed diffractions and shorter reflective segments, offset from one another. These reflecting segments in the Skardöra antiform are interpreted as representing dolerite sills that were once continuous over a larger area but have been offset by normal faulting. This reinterpretation suggests a significantly thinner upper allochthon in the west than in previous interpretations. These results emphasize the importance of careful data integration and migration for seismic interpretation, shedding new light on the structural complexity of the western Scandinavian Caledonides. The study contributes to refining geological models and advancing understanding of the region's tectonic history. [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.) | |
| Database: | Engineering Source |
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| Header | DbId: egs DbLabel: Engineering Source An: 187967599 AccessLevel: 6 PubType: Academic Journal PubTypeId: academicJournal PreciseRelevancyScore: 0 |
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| Items | – Name: Title Label: Title Group: Ti Data: A new look at reflection seismic data from the Central Caledonian Transect across the Scandinavian Peninsula. – Name: Author Label: Authors Group: Au Data: <searchLink fieldCode="AR" term="%22Juhlin%2C+Christopher%22">Juhlin, Christopher</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> christopher.juhlin@geo.uu.se</i><br /><searchLink fieldCode="AR" term="%22Lescoutre%2C+Rodolphe%22">Lescoutre, Rodolphe</searchLink><relatesTo>2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Almqvist%2C+Bjarne%22">Almqvist, Bjarne</searchLink><relatesTo>1</relatesTo> (AUTHOR) – Name: TitleSource Label: Source Group: Src Data: <searchLink fieldCode="JN" term="%22Solid+Earth%22">Solid Earth</searchLink>. 2025, Vol. 16 Issue 8, p775-784. 10p. – Name: Subject Label: Subjects Group: Su Data: <searchLink fieldCode="DE" term="%22Seismic+reflection+method%22">Seismic reflection method</searchLink><br /><searchLink fieldCode="DE" term="%22Geological+modeling%22">Geological modeling</searchLink><br /><searchLink fieldCode="DE" term="%22Physiographic+provinces%22">Physiographic provinces</searchLink><br /><searchLink fieldCode="DE" term="%22Resampling+%28Statistics%29%22">Resampling (Statistics)</searchLink><br /><searchLink fieldCode="DE" term="%22Igneous+intrusions%22">Igneous intrusions</searchLink><br /><searchLink fieldCode="DE" term="%22Geological+research%22">Geological research</searchLink><br /><searchLink fieldCode="DE" term="%22Neotectonics%22">Neotectonics</searchLink> – Name: SubjectGeographic Label: Geographic Terms Group: Su Data: <searchLink fieldCode="DE" term="%22Scandinavia%22">Scandinavia</searchLink> – Name: Abstract Label: Abstract Group: Ab Data: This study revisits seismic reflection data from the Central Scandinavian Caledonides, initially acquired during campaigns in the late 1980s and early 1990s. Previous analyses faced challenges in merging and imaging due to varying trace spacing and data gaps, particularly in the western parts. To address these limitations, we spatially resampled the data to a consistent trace spacing, carefully merged segments, and migrated the entire merged section. This approach resulted in a revised seismic profile, with notable changes in the western section where the image reveals key differences compared to earlier interpretations. The updated profile indicates near-continuous reflections across merged segments, resolving issues of abrupt breaks present in some prior publications. Enhanced imaging in the western section unveils new structural details, including collapsed diffractions and shorter reflective segments, offset from one another. These reflecting segments in the Skardöra antiform are interpreted as representing dolerite sills that were once continuous over a larger area but have been offset by normal faulting. This reinterpretation suggests a significantly thinner upper allochthon in the west than in previous interpretations. These results emphasize the importance of careful data integration and migration for seismic interpretation, shedding new light on the structural complexity of the western Scandinavian Caledonides. The study contributes to refining geological models and advancing understanding of the region's tectonic history. [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.) |
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| RecordInfo | BibRecord: BibEntity: Identifiers: – Type: doi Value: 10.5194/se-16-775-2025 Languages: – Code: eng Text: English PhysicalDescription: Pagination: PageCount: 10 StartPage: 775 Subjects: – SubjectFull: Seismic reflection method Type: general – SubjectFull: Geological modeling Type: general – SubjectFull: Physiographic provinces Type: general – SubjectFull: Resampling (Statistics) Type: general – SubjectFull: Igneous intrusions Type: general – SubjectFull: Geological research Type: general – SubjectFull: Neotectonics Type: general – SubjectFull: Scandinavia Type: general Titles: – TitleFull: A new look at reflection seismic data from the Central Caledonian Transect across the Scandinavian Peninsula. Type: main BibRelationships: HasContributorRelationships: – PersonEntity: Name: NameFull: Juhlin, Christopher – PersonEntity: Name: NameFull: Lescoutre, Rodolphe – PersonEntity: Name: NameFull: Almqvist, Bjarne IsPartOfRelationships: – BibEntity: Dates: – D: 01 M: 08 Text: 2025 Type: published Y: 2025 Identifiers: – Type: issn-print Value: 18699510 Numbering: – Type: volume Value: 16 – Type: issue Value: 8 Titles: – TitleFull: Solid Earth Type: main |
| ResultId | 1 |
