Magnetic susceptibility and facies relationship in Bajocian–Bathonian carbonates from the Azé caves, southeastern Paris Basin, France

Dechamps, Sylvain; Silva, Anne‐Christine Da; Boulvain, Frédéric

doi:10.1144/sp414.11

Cited by 3 publications

(3 citation statements)

References 55 publications

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“…A comparison between MS and microfacies has shown a clear positive correlation, suggesting that the MS signal is primary, as already stated by Dechamps et al (2015) for the BajocianBathonian of the Azé caves. Moreover, the MS values regularly decrease from the marine distal to the marine proximal facies.…”

Section: Sequence Stratigraphy and Magnetic Susceptibilitysupporting

confidence: 76%

The Hondelange Formation and the sequence stratigraphic model of Belgian Lorraine

Boulvain¹,

Belanger²

2018

Geol. Belg.

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ABSTRACT.A detailed survey of the Sinemurian-Pliensbachian Hondelange Formation in southern Belgium led to propose a new lithostratigraphic status for this unit. Important lateral variations together with a 10° angular unconformity with respect to underlying formations suggest that the Hondelange Formation is a prominent element of the transgressive prism in Belgian Lorraine. This study also offers a sequence stratigraphic model for this area with precise description and location of transgressive and maximum flooding surfaces. These results are compared with previous models. A comparison of the magnetic susceptibility data (MS) with sequence stratigraphic units shows that no special effect of the system tract nature is observed. Depositional sequences however are characterized by different mean MS values according to their general sedimentary settings.

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Section: Sequence Stratigraphy and Magnetic Susceptibilitysupporting

confidence: 76%

The Hondelange Formation and the sequence stratigraphic model of Belgian Lorraine

Boulvain¹,

Belanger²

2018

Geol. Belg.

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“…2), which indicates that in this case, local diagenetic alteration has a low impact on the MS data. † Facies evolution can also be compared with the MS signal to identify a link between sea-level and MS changes Da Silva et al 2009a;Bábek et al 2013;Alekseev et al 2015;Dechamps et al 2015;Grabowski et al 2015;Sardar Abadi et al 2015). The MS signal from the Villers section (Devonian, Belgium), which was previously interpreted as carrying a detrital signal, based on the link with Zr (Fig.…”

Section: Comparison With Other Proxiesmentioning

confidence: 99%

“…Importantly, these correlations need to be framed in a well-developed biostratigraphic framework. Correlations can then be established through different techniques: † By visual correlation of MS peaks (Crick et al 1997;Geršl & Hladil 2004;Da Silva & Boulvain 2006;Bábek et al 2010;Boulvain et al 2010;Michel et al 2010;Dechamps et al 2015;Grabowski et al 2015;Mayrhofer & Lukeneder 2015;Whalen et al 2015). † The MS curve can also be included in a sequence stratigraphic framework (Whalen & Day 2008, 2010Da Silva et al 2010).…”

Section: Application Of Ms As a Correlation Toolmentioning

confidence: 99%

Magnetic susceptibility application: a window onto ancient environments and climatic variations: foreword

Silva

Whalen

Hladil

et al. 2015

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Magnetic susceptibility (MS) is a powerful tool, which is being applied increasingly on sedimentary rocks to constrain stratigraphic correlations, or as a palaeo-environmental or palaeoclimatic tool. The origin of the magnetic minerals responsible for the variations in MS can be linked to various phenomena such as detrital inputs, pedogenesis, bacterial precipitation or diagenesis. Therefore, it is critical to improve our knowledge of the origin of the MS signal in order to apply it for correlations or as a proxy. Here, we present a synthesis of the techniques that can be applied to get a better understanding of the origin of the MS signal, through comparison with other palaeo-environmental proxies, through magnetic measurements or through dissolution and direct observation of the extracted minerals. We also propose an overview of the different techniques applied in order to use MS as a correlation tool, and we show various examples of successful applications of MS as a recorder of change in past sea-level and climate. We also present the main results and activities of the IGCP-580 project 'Application of magnetic susceptibility as a palaeoclimatic proxy on Palaeozoic sedimentary rocks and characterization of the magnetic signal'.

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Unfathomable: The shifting sand of wave base

Rankey

Appendini

2022

Journal of Sedimentary Research

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Notions of fair-weather, storm, and swell wave bases are ubiquitous in interpretations of wave-dominated siliciclastic shelves, carbonate ramps, and mixed-systems deposits that are present throughout the geologic record. A review of literature, observations of several modern and ancient depositional systems, and numerical hydrodynamic models reveal the roles of sediment grade, bathymetric irregularities, and depositional gradient on the variable depths to which waves leave a sedimentologically discernible record. They reveal that wave-induced horizontal particle velocities and estimates of wave effectiveness form a continuous spectrum with depth, with a lack of distinct subdivision into fair-weather and storm conditions. Although commonly ascribed to “fair-weather wave base,” the depth above which sediment is persistently agitated or winnowed also is shaped by bathymetric gradient, direction of wave approach, tides, and currents, as well as sediment grade. Similarly, even with identical waves, the maximum depth of initiation of sediment movement, e.g., effective wave base, is not directly comparable among shelves, or even within the same shelf through time, because hydrodynamic processes are encoded differently by shelves of variable morphology and sedimentology. The numerical models further suggest possible geomorphology–hydrodynamics–sediment linkages. Relative to steeper shelves impacted by identical waves, shelves of shallower gradient favor lower-energy seafloor conditions, likely accompanied by accumulation of finer or muddier sediment, thinner sandy shoreface accumulations, or both. Given that many stratigraphic accumulations from the parasequence to composite-sequence scale steepen upward with time, this conceptual model predicts an apparent increase in wave energy on the seafloor through time for individual progradational shorelines, even with constant waves.

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Magnetic susceptibility and facies relationship in Bajocian–Bathonian carbonates from the Azé caves, southeastern Paris Basin, France

Cited by 3 publications

References 55 publications

The Hondelange Formation and the sequence stratigraphic model of Belgian Lorraine

The Hondelange Formation and the sequence stratigraphic model of Belgian Lorraine

Magnetic susceptibility application: a window onto ancient environments and climatic variations: foreword

Unfathomable: The shifting sand of wave base

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