How sensitive are intraplate inherited structures? Insight from the Cévennes Fault System (Languedoc, SE France)

Parizot, Oriane; Missenard, Yves; Blaise, Thomas; Benedicto, Antonio; Haurine, Fréderic

doi:10.1017/s0016756822000152

Cited by 8 publications

(6 citation statements)

References 90 publications

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“…On a larger scale, this tectonic agenda of the eastern Paris Basin is consistent with the U-Pb ages of slickenfibres and fracture-filling calcites in the north foreland basin of the Pyrenees (Parizot et al 2021), in the southeastern Pyrenean fold-and-thrust belt and the south foreland Ebro basin (Cruset et al 2020) and along the Cevennes fault system (Parizot et al 2022). South of the Paris Basin, fluorite mineralization occurred likely in response of this contractional event (Lenoir et al 2021).…”

Section: A Ages Impact and Duration Of Brittle Deformationsupporting

confidence: 73%

Far-field brittle deformation record in the eastern Paris Basin (France)

et al. 2022

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Jurassic carbonate strata in the eastern Paris Basin exhibit several generations of faults, tension gashes and stylolites. Although their relative chronology can sometimes be determined according to cross-cutting relationships, the duration of major deformation phases and their influence on fluid flow and carbonate cementation are still uncertain. This contribution aims to clarify the timing of brittle deformation and associated calcite cementation. Tension gashes filled by calcite in Jurassic carbonates were sampled in outcrops and boreholes and dated through U–Pb geochronology. Almost all the sampled fractures were cemented during the Cenozoic period. Continuous deformation spread from c. 50 to 30 Ma. Tension gashes oriented N10° to N20° dated at 48–43 Ma show the main Pyrenean contractional stage. A second set of calcites were dated at c. 35–33 Ma and document a Late Eocene – Oligocene extension. A transition from the compressional to the extensional regime is expressed by tension gashes dated between 43 and 35 Ma. Finally, tension gashes oriented N150° to N175°, dated between 32 and 18 Ma, may result from the propagation of the horizontal stress generated by the Alpine orogen or by late Pyrenean deformation. Clumped isotope thermometry on five samples revealed both low crystallization temperatures (from 27 to 53 °C) and the meteoric origin of calcite-precipitating fluids. Our research therefore documents a continuous fracturing from Ypresian to Rupelian times, and less expressed brittle deformation during the Miocene period.

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Section: A Ages Impact and Duration Of Brittle Deformationsupporting

confidence: 73%

Far-field brittle deformation record in the eastern Paris Basin (France)

et al. 2022

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“…Compression that occurred in the Provence domain led to a generalized internal plate compressional context, and likely to uplift amplification in the Durance Isthmus. The difference in tectonic style between the Provence and Pyrenean domains is explained by differential accommodation of internal plate shortening along the Cevennes and Nimes sinistral faults (CF and NF; Parizot et al, 2022). Position of continents and structural domains are after Dielforder et al (2019), modified.…”

Section: Resultsmentioning

confidence: 99%

“…(Figure 6). The continuous activity of this fault system, partly associated with the CF, is highlighted by numerous U-Pb dates on calcite, which indicate activity from the Late Cretaceous to the Late Eocene (Parizot et al, 2022). As shown by the style of deformation, thrusting occurred in relationship to basement-cover decoupling in a tinskin mode.…”

Section: E Arly Pyrene An Compre Ss Ion and Dur An Ce Is Thmusmentioning

confidence: 90%

“…We propose that marine regression is forced by shortening highlighted by North‐directed faulting and ENE‐WSW folding, and was triggered by sinistral strike‐slip motion along the Nîmes Fault as suggested by Ford and Stahel, (1995), (Figure 6). The continuous activity of this fault system, partly associated with the CF, is highlighted by numerous U–Pb dates on calcite, which indicate activity from the Late Cretaceous to the Late Eocene (Parizot et al, 2022). As shown by the style of deformation, thrusting occurred in relationship to basement‐cover decoupling in a tin‐skin mode.…”

Section: Early Pyrenean Compression and Durance Isthmusmentioning

confidence: 97%

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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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“…In a convergence context, intra-plate deformations occur during orogenic processes several hundred kilometers away from the mountain belt front (Jolivet et al, 2021;Lacombe & Mouthereau, 1999). They are accompanied by uplifting following lithospheric folding (Gerbault et al, 1999;Ziegler et al, 1995), tectonic reactivation (Gorczyk et al, 2013;Navabpour et al, 2017;Parizot et al, 2022), and the formation of new fault and joint networks (Duperret et al, 2012;Missenard et al, 2017). However, far-field deformation takes place sometimes at the onset of convergence resulting in the inversion of pre-existing structures such as rift (Frizon et al, 2000) or passive margins (Leffondré et al, 2021) and in the folding of the lithosphere (Cloetingh and Burov, 2011).…”

Section: Introductionmentioning

confidence: 99%

Early, far-field and diffuse tectonics records in the North Aquitaine Basin (France)

Bouat,

Strzerzynski,

Mourgues

et al. 2023

BSGF - Earth Sci. Bull.

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During the Mesozoic and the Cenozoic periods, Europe recorded several tectonic events that have been interpreted as far-field tectonics. This may be diffuse tectonics that occur at the onset of a major tectonic event or propagation of the deformation away from orogenic fronts. In Western Europe, the deformations related to the opening of the Bay of Biscay and the formation of the Pyrenean belt are well described in the southern part of the Aquitaine basin, but little is known about the “Northern Aquitaine Platform”. We combine field observation with Unmanned Aerial Vehicle (UAV) imagery and U-Pb laser dating on calcite to determine the tectonic evolution in the Vendée Coastal domain. Our results highlight the occurrence of two main tectonic events since the early Jurassic: (1) At the transition from the Late Jurassic to Early Cretaceous, WNW-ESE striking normal faults exhibit a horst and graben pattern that emplaced at the onset of the opening of the Bay of Biscay. Their association with reactivated Variscan strike-slip faults is consistent with oblique extension processes. Such a tectonic event was accompanied by fluid flow coming from depth. (2) During the Late Cretaceous, fractures, wide-open folds, veins, and joints are consistent with the N-S shortening direction that occurs during the earliest stages of the N-S Pyrenenan compression. In both cases, the early stages of the main regional deformation stages are recorded in the “Northern Aquitaine Platform” in a far-field position and before the focus of strain in rifts or orogenic belts. In the Aquitaine basin as in many other places in Europe, the tectonic study of sedimentary platforms located far from the main plate-scale deformation zone provides new constraints on the early diffuse deformation process that predate the main tectonic phases.

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How sensitive are intraplate inherited structures? Insight from the Cévennes Fault System (Languedoc, SE France)

Cited by 8 publications

References 90 publications

Far-field brittle deformation record in the eastern Paris Basin (France)

Far-field brittle deformation record in the eastern Paris Basin (France)

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

Early, far-field and diffuse tectonics records in the North Aquitaine Basin (France)

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