Paleo-landslides on the meridional border of the Larzac Plateau (France): recognition and predisposing/triggering factors.
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| Title: | Paleo-landslides on the meridional border of the Larzac Plateau (France): recognition and predisposing/triggering factors. |
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| Authors: | Elkharrat, Kévin1 (AUTHOR) kevin.elkharrat@sorbonne-universite.fr, Homberg, Catherine1 (AUTHOR), Lafuerza, Sara1 (AUTHOR), Loget, Nicolas1 (AUTHOR), Gasc-Barbier, Muriel2 (AUTHOR), Gautier, Stéphanie3 (AUTHOR) |
| Source: | Landslides. May2025, Vol. 22 Issue 5, p1475-1489. 15p. |
| Subjects: | Geomorphological mapping, Earth sciences, Rock deformation, Geological mapping, Geological maps, Landslides |
| Abstract: | The southern border of the Larzac plateau, in the Occitanie region (France), has been affected by several complex landslides involving the failure of Jurassic carbonate series overlying Triassic clays. Detailed geological and geomorphological mapping, including photogrammetry, LiDAR and fracturing surveys on the upper stream of the Lergue and Laurounet valleys, show that landslide scarps correlate with fault or fracture strikes. While landslide scarps are mostly correlated with NNW-SSE fractures set direction related to the Pyrenean orogenesis and N-S faults direction, another fracturing E-W direction correlated with the Liasic extension could explain the lateral terminations of the landslide deposits. These fractures and faults are assumed to influence the initiation and spreading of the rock failures evolving into roto-translational landslides. Depth of sliding surfaces is controlled by the presence of evaporites in underlying Triassic clays. Exposure dating of two of the investigated landslide scarps using chlorine-36 nuclides suggests a triggering at the end of the Late Pleistocene/Early Holocene. [ABSTRACT FROM AUTHOR] |
| Copyright of Landslides is the property of Springer Nature 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: 184450922 AccessLevel: 6 PubType: Academic Journal PubTypeId: academicJournal PreciseRelevancyScore: 0 |
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| Items | – Name: Title Label: Title Group: Ti Data: Paleo-landslides on the meridional border of the Larzac Plateau (France): recognition and predisposing/triggering factors. – Name: Author Label: Authors Group: Au Data: <searchLink fieldCode="AR" term="%22Elkharrat%2C+Kévin%22">Elkharrat, Kévin</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> kevin.elkharrat@sorbonne-universite.fr</i><br /><searchLink fieldCode="AR" term="%22Homberg%2C+Catherine%22">Homberg, Catherine</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Lafuerza%2C+Sara%22">Lafuerza, Sara</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Loget%2C+Nicolas%22">Loget, Nicolas</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Gasc-Barbier%2C+Muriel%22">Gasc-Barbier, Muriel</searchLink><relatesTo>2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Gautier%2C+Stéphanie%22">Gautier, Stéphanie</searchLink><relatesTo>3</relatesTo> (AUTHOR) – Name: TitleSource Label: Source Group: Src Data: <searchLink fieldCode="JN" term="%22Landslides%22">Landslides</searchLink>. May2025, Vol. 22 Issue 5, p1475-1489. 15p. – Name: Subject Label: Subjects Group: Su Data: <searchLink fieldCode="DE" term="%22Geomorphological+mapping%22">Geomorphological mapping</searchLink><br /><searchLink fieldCode="DE" term="%22Earth+sciences%22">Earth sciences</searchLink><br /><searchLink fieldCode="DE" term="%22Rock+deformation%22">Rock deformation</searchLink><br /><searchLink fieldCode="DE" term="%22Geological+mapping%22">Geological mapping</searchLink><br /><searchLink fieldCode="DE" term="%22Geological+maps%22">Geological maps</searchLink><br /><searchLink fieldCode="DE" term="%22Landslides%22">Landslides</searchLink> – Name: Abstract Label: Abstract Group: Ab Data: The southern border of the Larzac plateau, in the Occitanie region (France), has been affected by several complex landslides involving the failure of Jurassic carbonate series overlying Triassic clays. Detailed geological and geomorphological mapping, including photogrammetry, LiDAR and fracturing surveys on the upper stream of the Lergue and Laurounet valleys, show that landslide scarps correlate with fault or fracture strikes. While landslide scarps are mostly correlated with NNW-SSE fractures set direction related to the Pyrenean orogenesis and N-S faults direction, another fracturing E-W direction correlated with the Liasic extension could explain the lateral terminations of the landslide deposits. These fractures and faults are assumed to influence the initiation and spreading of the rock failures evolving into roto-translational landslides. Depth of sliding surfaces is controlled by the presence of evaporites in underlying Triassic clays. Exposure dating of two of the investigated landslide scarps using chlorine-36 nuclides suggests a triggering at the end of the Late Pleistocene/Early Holocene. [ABSTRACT FROM AUTHOR] – Name: AbstractSuppliedCopyright Label: Group: Ab Data: <i>Copyright of Landslides is the property of Springer Nature 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: 10.1007/s10346-024-02422-6 Languages: – Code: eng Text: English PhysicalDescription: Pagination: PageCount: 15 StartPage: 1475 Subjects: – SubjectFull: Geomorphological mapping Type: general – SubjectFull: Earth sciences Type: general – SubjectFull: Rock deformation Type: general – SubjectFull: Geological mapping Type: general – SubjectFull: Geological maps Type: general – SubjectFull: Landslides Type: general Titles: – TitleFull: Paleo-landslides on the meridional border of the Larzac Plateau (France): recognition and predisposing/triggering factors. Type: main BibRelationships: HasContributorRelationships: – PersonEntity: Name: NameFull: Elkharrat, Kévin – PersonEntity: Name: NameFull: Homberg, Catherine – PersonEntity: Name: NameFull: Lafuerza, Sara – PersonEntity: Name: NameFull: Loget, Nicolas – PersonEntity: Name: NameFull: Gasc-Barbier, Muriel – PersonEntity: Name: NameFull: Gautier, Stéphanie IsPartOfRelationships: – BibEntity: Dates: – D: 01 M: 05 Text: May2025 Type: published Y: 2025 Identifiers: – Type: issn-print Value: 1612510X Numbering: – Type: volume Value: 22 – Type: issue Value: 5 Titles: – TitleFull: Landslides Type: main |
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