The Tertiary structuration of the Western Subalpine foreland deciphered by calcite-filled faults and veins

Bilau, Antonin; Bienveignant, Dorian; Rolland, Yann; Schwartz, Stéphane; Godeau, Nicolas; Guihou, Abel; Deschamps, Pierre; Mangenot, Xavier; Brigaud, Benjamin; Boschetti, Louise; Dumont, Thierry

doi:10.1016/j.earscirev.2022.104270

Cited by 14 publications

(8 citation statements)

References 96 publications

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“…In this sample, calcite fibres are observed testifying of a crystallization rate higher than the fracture opening rate and interpreted as the limit between crack‐seal‐slip and crack‐seal textures by Roberts and Holdsworth (2022). This petrological observation suggests that cementation occurred soon after fracturing, included in the uncertainty of the U–Pb age (e.g., Bilau et al, 2023; Corrêa et al, 2022). The dated calcite corresponds to a late stage of the vein opening (Figure 5c) still compatible with the main fibres orientation.…”

Section: Resultsmentioning

confidence: 91%

“…How to cite this article: Bilau, A., Rolland, Y., Dumont, T., Schwartz, S., Godeau, N., Guihou, A., & Deschamps, P. (2023). Early onset of Pyrenean collision (97-90 Ma) evidenced by U-Pb dating on calcite (Provence, SE France).…”

Section: Data Ava I L a B I L I T Y S Tat E M E N Tmentioning

confidence: 99%

“…Further, N‐S Pyrenean compression continued until the Late Eocene. Afterwards, the opening of the West European rift was followed by the NE trending back‐arc rifting of the Ligurian basin, which occurred during the Oligocene–Miocene period (e.g., Romagny et al, 2020) and Miocene E‐W compression (e.g., Bilau et al, 2023). These latter tectonic events led to superimposed N‐S and E‐W cross‐cutting extensional faults partly reactivated in compression during the Alpine orogeny since about 20 Ma (Balansa et al, 2022; Hemelsdaël et al, 2021), which makes the tectonic restauration challenging.…”

Section: Geological Settingmentioning

confidence: 99%

“…In recent years, U–Pb geochronology on calcite has been increasingly used to constrain time scales associated with the dynamics of fault development (e.g., Bilau et al, 2021, 2023; Parizot et al, 2021; Roberts & Holdsworth, 2022). Such an approach provides key temporal insights in complement to the traditional approach of brittle systems, in which timing of deformation stages is only bracketed by relative stratigraphic cross‐cutting relationships and thus generally suffers from large uncertainties.…”

Section: Introductionmentioning

confidence: 99%

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Early onset of Pyrenean collision (97–90 Ma) evidenced by U–Pb dating on calcite (Provence, SE France)

et al. 2023

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Early Late Cretaceous uplift of Provence gave rise to the Durance Isthmus. In the present study, U–Pb dating on calcite of compressional structures related to Pyrenean foreland compressional deformation in Provence shows that N‐S shortening occurred coeval with emersion of the Durance Isthmus, through the development of combined top‐to‐the‐North to NW thrusts between 97 and 90 Ma. This large‐scale event, recorded from the Pyrenees to the Middle‐East regions is interpreted as a far‐field internal plate precursor of the Africa‐Europe plates reorganization. Furthermore, the change in tectonic style and amount of shortening between Provence and Pyrenees was accommodated by sinistral reactivation of the NE–SW Cevennes and Nimes faults, acting as transform boundaries in this incipient collisional context.

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Section: Resultsmentioning

confidence: 91%

Section: Data Ava I L a B I L I T Y S Tat E M E N Tmentioning

confidence: 99%

Section: Geological Settingmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Early onset of Pyrenean collision (97–90 Ma) evidenced by U–Pb dating on calcite (Provence, SE France)

et al. 2023

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“…The fluid system was stratigraphically compartmentalized with hot meteoric fluids flowing laterally in the sedimentary cover during LPS and folding, then opened to meteoric fluids during the late stages of folding and during post-folding deformation development (Berio et al, 2022). In the Vercors chain in southeastern France, Bilau et al (2022) used U-Pb geochronology along with δ 18 O, δ 13 C and Δ 47 CO 2 on syntectonic calcite veins and thrusts cements to picture a past fluid system dominated by heated brines.…”

Section: D Elemental Geochemistrymentioning

confidence: 99%

How the geochemistry of syn-kinematic calcite cement depicts past fluid flow and assists structural interpretations: a review of concepts and applications in orogenic forelands

Beaudoin

Lacombe²,

Hoareau³

et al. 2022

Geol. Mag.

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Orogenic forelands host interactions between deformation and static or migrating fluids. Given their accessibility and dimensions, these areas are not only historic landmarks for structural geology, but they are also areas of prime interest for georesource exploration and geological storage, and loci of potential geohazards. Geochemical techniques applied on cements filling tectonic structures and associated trapped fluids can constrain the temperature, pressure, origin and pathways of fluids during deformation and allow the characterization of the past fluid system. In this review focused on calcite cements, we first present and critically discuss the most used geochemical techniques to appraise specific parameters of the fluid system. Second, we summarize the outcomes of selected case studies where the past fluid system was reconstructed with consideration of tectonics, either at the scale of the individual fold/thrust or at the scale of the fold-and-thrust belt. At first order, the past fluid system evolves in a similar way with respect to the considered stage of deformation, being rather closed to external fluids when deformation is bounded to mesoscale structure development, and opening to vertical flow when thrust and folds develop. In a more detailed view, it seems that the past fluid system evolves and distributes under the influence of the structural style, of the geometry of the major faults and of the lithology of the sedimentary succession. Through this review, we illustrate the concept of geochemistry-assisted structural geology through case studies where the geochemistry of calcite veins constrained subsurface geometries and structural developments in orogenic forelands.

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Fracturing timing of Jurassic reservoirs in the Dibei-Tuziluoke gas field, Kuqa foreland basin: Evidence from petrography, fluid inclusions, and clumped isotopes

Yu,

Yuan,

et al. 2024

Energy Geoscience

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The Tertiary structuration of the Western Subalpine foreland deciphered by calcite-filled faults and veins

Cited by 14 publications

References 96 publications

Early onset of Pyrenean collision (97–90 Ma) evidenced by U–Pb dating on calcite (Provence, SE France)

Early onset of Pyrenean collision (97–90 Ma) evidenced by U–Pb dating on calcite (Provence, SE France)

How the geochemistry of syn-kinematic calcite cement depicts past fluid flow and assists structural interpretations: a review of concepts and applications in orogenic forelands

Fracturing timing of Jurassic reservoirs in the Dibei-Tuziluoke gas field, Kuqa foreland basin: Evidence from petrography, fluid inclusions, and clumped isotopes

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