No more blind dates with calcite: Fluid-flow vs. fault-slip along the Očkov thrust, Prague Basin

Žák, Jiří; Vacek, František; Sláma, Jiří

doi:10.1016/j.gsf.2021.101143

Cited by 29 publications

(12 citation statements)

References 66 publications

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“…Cathodoluminescence observations further support the homogeneity of the cements (Fig. 4) as well as the absence of any vein reopening and calcite recrystallization or fluid infiltration that might cause anomalous younger (reset) ages (Roberts et al, 2021). U-Pb dating of calcite cements was conducted using LA-ICP-MS at the Institut des Sciences Analytiques et de Physico-Chimie pour l'Environnement et les Matériaux (IPREM) laboratory (Pau, France).…”

Section: Combining Sedimentary Stylolite Roughness Inversion For Paleodepth and Burial History To Constrain The Onset Of Lpsmentioning

confidence: 62%

“…2b). Laser-ablation-inductivelycoupled-plasma-mass-spectrometry (LA-ICP-MS) U-Pb dating of calcite consistently reveals the age of brittle deformation events (Roberts and Walker, 2016;Nuriel et al, 2017;Hansman et al, 2018;Beaudoin et al, 2018;Roberts et al, 2020) (Fig. 2b and d), provided that cementation was…”

Section: Dating Veins and Faultsmentioning

confidence: 95%

“…coeval with fracturing and that no later fluid infiltration and/or calcite recrystallization occurred (Roberts et al, 2021).…”

Section: Dating Veins and Faultsmentioning

confidence: 96%

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Dating folding beyond folding, from layer-parallel shortening to fold tightening, using mesostructures: lessons from the Apennines, Pyrenees, and Rocky Mountains

Lacombe

Beaudoin²,

Hoareau³

et al. 2021

Solid Earth

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Abstract. Dating syntectonic sedimentary sequences is often seen as the unique way to constrain the initiation, duration, and rate of folding as well as the sequence of deformation in the shallow crust. Beyond fold growth, however, deformation mesostructures accommodate the internal strain of pre-folding strata before, during, and after strata tilting. Absolute dating of syn-folding mesostructures may help constrain the duration of fold growth in the absence of preserved growth strata. Absolute dating of mesostructures related to early-folding layer-parallel shortening and late fold tightening provides an access to the timing and duration of the entire folding event. We compile available ages from the literature and provide new U–Pb ages of calcite cements from veins and faults from four folds (Apennines, Pyrenees, Rocky Mountains). Our results not only better constrain the timing of fold growth but also reveal a contraction preceding and following folding, the duration of which might be a function of the tectonic style and regional sequence of deformation. This study paves the way for a better appraisal of folding lifetime and processes and stress evolution in folded domains.

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Section: Combining Sedimentary Stylolite Roughness Inversion For Paleodepth and Burial History To Constrain The Onset Of Lpsmentioning

confidence: 62%

Section: Dating Veins and Faultsmentioning

confidence: 95%

See 1 more Smart Citation

Dating folding beyond folding, from layer-parallel shortening to fold tightening, using mesostructures: lessons from the Apennines, Pyrenees, and Rocky Mountains

Lacombe

Beaudoin²,

Hoareau³

et al. 2021

Solid Earth

View full text Add to dashboard Cite

show abstract

“…Interestingly, the preservation of a calcite twin strain/stress record from dated vein cements consistent with the kinematics of opening of the successive veins, in turn, precludes any later fluid-related dissolution and recrystallization which would have led to younger ages unrelated to twinning deformation and vein opening (e.g., [131]).…”

Section: Dating Calcite Twinning Eventsmentioning

confidence: 99%

“…Despite some variations across the vein, the overall tectonic shortening is subhorizontal and sub-parallel to the Gishron fault (∼N-S) and the Dead Sea transform plate boundary. These studies rely on the assumption that twinning occurred either during or shortly after calcite crystallized, in the absence of later recrystallization due to fluid circulations (e.g., [131]).…”

Section: Dating Calcite Twinning Eventsmentioning

confidence: 99%

Calcite Twin Formation, Measurement and Use as Stress–Strain Indicators: A Review of Progress over the Last Decade

et al. 2021

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Mechanical twins are common microstructures in deformed calcite. Calcite twins have been used for a long time as indicators of stress/strain orientations and magnitudes. Developments during the last decade point toward significant improvements of existing techniques as well as new applications of calcite twin analysis in tectonic studies. This review summarises the recent progress in the understanding of twin formation, including nucleation and growth of twins, and discusses the concept of CRSS and its dependence on several factors such as strain, temperature and grain size. Classical and recent calcite twin measurement techniques are also presented and their pros and cons are discussed. The newly proposed inversion techniques allowing for the use of calcite twins as indicators of orientations and/or magnitudes of stress and strain are summarized. Benefits for tectonic studies are illustrated through the presentation of several applications, from the scale of the individual tectonic structure to the continental scale. The classical use of calcite twin morphology (e.g., thickness) as a straightforward geothermometer is critically discussed in the light of recent observations that thick twins do not always reflect deformation temperature above 170–200 °C. This review also presents how the age of twinning events in natural rocks can be constrained while individual twins cannot be dated yet. Finally, the review addresses the recent technical and conceptual progress in calcite twinning paleopiezometry, together with the promising combination of this paleopiezometer with mechanical analysis of fractures or stylolite roughness.

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In situ calcite U−Pb geochronology by high-sensitivity single-collector LA-SF-ICP-MS

Yang

et al. 2022

Sci. China Earth Sci.

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No more blind dates with calcite: Fluid-flow vs. fault-slip along the Očkov thrust, Prague Basin

Cited by 29 publications

References 66 publications

Dating folding beyond folding, from layer-parallel shortening to fold tightening, using mesostructures: lessons from the Apennines, Pyrenees, and Rocky Mountains

Dating folding beyond folding, from layer-parallel shortening to fold tightening, using mesostructures: lessons from the Apennines, Pyrenees, and Rocky Mountains

Calcite Twin Formation, Measurement and Use as Stress–Strain Indicators: A Review of Progress over the Last Decade

In situ calcite U−Pb geochronology by high-sensitivity single-collector LA-SF-ICP-MS

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