Mesozoic diapirism in the Pyrenean orogen: Salt tectonics on a transform plate boundary

Canérot, J.; Hudec, Michael R.; Rockenbauch, K.

doi:10.1306/09170404007

Cited by 89 publications

(134 citation statements)

References 34 publications

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“…5) and underlies the Ranero area, could have acted both as a source of sulphate and as the core of a thermal anomaly owing to the salt conductivity. Similar diapirism and associated structural effects have been recorded in the coeval hydrothermaly dolomitised reservoirs in Aquitaine (France; Canérot et al, 2005). We, thus, suggest that convective flow above a salt diapir and subsequent TSR within a limestone host may provide the right conditions to generate CCD-II fluids.…”

Section: Ccd-ii Dolomitizing Fluidssupporting

confidence: 79%

“…Canérot et al, 2005); -the differential subsidence along the platform border; -the strike-slip movements themselves, ultimately related to crustal thinning (López-Horgue et al, 2010). Altogether, the fluid drives are not well constrained in the Ranero case, but the capacity of the system to focus fluid flow along pathways transverse to the edge of the platform remains the most remarkable aspect.…”

Section: Geometry Fluid Pathways and Fluid Drivesmentioning

confidence: 99%

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The Ranero Hydrothermal Dolomites (Albian, Karrantza Valley, Northwest Spain): Implications on Conceptual Dolomite Models

Nader

López‐Horgue

Shah

et al. 2012

Oil Gas Sci. Technol. – Rev. IFP Energies nouvelles

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Résumé -Les dolomies hydrothermales de Ranero (Albien, vallée de la Karrantza, nord-ouest de l'Espagne) : conséquences sur les modèles génétiques -Les modalités de gisement, la pétrographie, la géochimie et certaines caractéristiques pétrophysiques des corps dolomitiques associées aux failles dans la zone de Ranero (vallée de la Karrantza, nord-ouest de l'Espagne) sont présentées dans cette étude. Les corps dolomitiques sont encaissés dans des carbonates de plateforme déposés durant l'Albien dans le Bassin Basque-Cantabrique. Les dolomies sont formées au cours d'épisodes hydrothermaux successifs par remplacement ou précipitation -dans les vides laissés par une karstification superficielle et hypogène -et sont étroitement associées à un ensemble de failles et de fractures. La formation des dolomies est précédée et suivie par des dépôts de calcite hydrothermale. L'étude minéralogique et géochimique (XRD, ICP-MS/OES, XRF, isotopes stables et Sr radiogénique) permet de distinguer plusieurs stades de formation. Les dolomies sont ferreuses (au début) ou non-ferreuses (plus tard). Elles sont presque stoechiométriques et présentent une gamme de compositions isotopiques appauvries en δ 18 O (-18,7 à -10,5 ‰ V-PDB) qui témoigne de la multiplicité des stades de dolomitisation et de la température élevée des fluides (150-200 °C). La formation de ces dolomies est précédée et suivie par des stylolithisations conformes à la stratification, ce qui suggère un âge fini-Albien des circulations. La chimie des dolomies, celle des silicates authigènes associés et les relations géométriques de remplacement conduisent à postuler l'action de deux types contrastés de fluides dolomitisants. Chacun d'eux est vraisemblablement dérivé de saumures sulfatées et/ou issues de la compaction, mais ils circulent ensuite dans des environnements lithologiques distincts (silicaté riche en Fe vs carbonaté pauvre en Fe) où la réduction thermique des sulfates les fait évoluer vers des propriétés contrastées : soit vers une composition acide et ferreuse (à même de précipiter une dolomie ferreuse par remplacement de calcaire), soit vers une composition pauvre en Fe et riche en S réduit (réactifs avec la dolomie ferreuse). Les moteurs de ces circulations sont peu contraints par nos observations, mais les deux types de fluides sont visiblement drainés par les failles traversant la bordure de la plateforme et qui sont associées aux diapirs.

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Section: Ccd-ii Dolomitizing Fluidssupporting

confidence: 79%

Section: Geometry Fluid Pathways and Fluid Drivesmentioning

confidence: 99%

The Ranero Hydrothermal Dolomites (Albian, Karrantza Valley, Northwest Spain): Implications on Conceptual Dolomite Models

Nader

López‐Horgue

Shah

et al. 2012

Oil Gas Sci. Technol. – Rev. IFP Energies nouvelles

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“…The Aptian-Albian history of diapir piercement, emergence, and outpouring in an overall transcurrent tectonic setting is showed in North Africa, Pyrenean, and North Atlantic domains (Hiscott et al, 1990;Vila et al, 1994Vila et al, , 2001Letouzey et al, 1995;Le Vot et al, 1996;Zitouni, 1997;Perthuisot et al, 1999;Bédir et al, 2000;Vergés and Garcia-Senz, 2001;Canérot et al, 2005;Jallouli et al, 2005;Talbot et al, 2005;Zouaghi et al, 2005a,b;Zouaghi, 2008).…”

Section: Movement Of Triassic Evaporite Bodiesmentioning

confidence: 99%

Analysis of Cretaceous (Aptian) strata in central Tunisia, using 2D seismic data and well logs

Zouaghi

Ferhi

Bédir

et al. 2011

Journal of African Earth Sciences

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“…This major unconformity is related to a regressive episode within the carbonate platform. The development of this unconformity can be related to an increase in compression of Iberia with Africa (Martin-Chivelet, 1995) and transpression in the Pyrenees (Olivet, 1996;Canérot et al, 2005). The regression was widespread, being recognized in the Boreal and the Tethyan main cycles (Jacquin et al, 1998).…”

Section: Geodynamic Evolutionmentioning

confidence: 99%

Stratigraphy and sequence correlations in the Lower Cretaceous around Lisbon

Rey

Caetano

2017

CTerra/ESJ

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The cliffs along the Atlantic coast near Lisbon-between Cascais and Guincho Beach, near Ericeira, and north of Cape Espichel-exhibit perfectly preserved Lower Cretaceous formations, with a large variety of sedimentary deposits (siliciclastics and carbonates) and recorded environments (from open distal platform to fluvial systems and palaeosols). These exposures allow the stratal, sedimentological, palaeontological, mineralogical, and geochemical patterns of depositional sequences during the Valanginian-Albian to be analyzed. The series representing the deepest marine environments are found in the vicinity of Cascais, with deposits in more proximal positions being observed both northwards (the Ericeira area) and southwards (Cape Espichel). The cyclic variations in sea level at the second-order scale record the tectonic events linked to the initial episodes of the northward propagation of the opening of the Atlantic. The sea-level changes observed at the third-order scale are registered by transgressive and highstand systems tracts. Lowstand systems tracts are very scarce in these shallow environments.Keywords: depositional sequences, Lower Cretaceous, Lisbon, Lusitanian Basin ResumoAs arribas ao longo do litoral atlântico nas proximidades de Lisboa-entre Cascais e a Praia do Guincho, perto da Ericeira e a norte do Cabo Espichel-são constituídas por formações do Cretá-cico Inferior, perfeitamente preservadas e expostas, que mostram uma enorme variedade de depó-sitos (siliciclásticos, carbonatados) e ambientes (desde plataforma distal aberta a sistemas fluviais e paleossolos). A sua observação permite analisar as assinaturas estratigráficas, sedimentológicas, paleontológicas, mineralógicas e geoquímicas das sequências deposicionais do intervalo Valanginiano-Albiano. A série correspondente aos ambientes mais marinhos surge na vizinhança de Cascais; depósitos de posições mais proximais são observados mais a Norte (na área da Ericeira) e a Sul (Cabo Espichel). As variações cíclicas do nível marinho de 2ª ordem registam os eventos tectónicos associados ao primeiro episódio de propagação para noroeste da abertura do Atlântico. As variações do nível marinho de 3ª ordem são registadas por cortejos deposicionais transgressivos e de alto nível marinho. Os cortejos de baixo nível marinho são muito escassos nestes ambientes pouco profundos.Palavras-chave: sequências deposicionais, Cretácico Inferior, Lisboa, Bacia Lusitaniana

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Mesozoic diapirism in the Pyrenean orogen: Salt tectonics on a transform plate boundary

Cited by 89 publications

References 34 publications

The Ranero Hydrothermal Dolomites (Albian, Karrantza Valley, Northwest Spain): Implications on Conceptual Dolomite Models

The Ranero Hydrothermal Dolomites (Albian, Karrantza Valley, Northwest Spain): Implications on Conceptual Dolomite Models

Analysis of Cretaceous (Aptian) strata in central Tunisia, using 2D seismic data and well logs

Stratigraphy and sequence correlations in the Lower Cretaceous around Lisbon

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