Reconciling strontium-isotope and K–Ar ages with biostratigraphy: the case of the Urgonian platform, Early Cretaceous of the Jura Mountains, Western Switzerland

Godet, Alexis; Föllmi, Karl B.; Stille, Peter; Bodin, Stéphane; Matera, Virginie; Adatte, Thierry

doi:10.1007/s00015-011-0053-5

Cited by 19 publications

(15 citation statements)

References 36 publications

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“…, 2008, 2010). To this, we add the new results from 87 Sr/ 86 Sr analyses on well‐preserved rhynchonellid brachiopods and K–Ar dating of extracted glauconite grains from the Eclépens section and other sections in the Jura Mountains, which convincingly corroborate our age model for the Urgonian in the Jura Mountains (Godet et al. , 2011).…”

Section: Chemostratigraphysupporting

confidence: 66%

A Late Barremian age for the onset of Urgonian‐type facies in the Swiss Jura Mountains Reply to the discussion by Conrad et al. on “Stratigraphic, sedimentological and palaeoenvironmental constraints on the rise of the Urgonian Platform in the western Swiss Jura” by Godet et al. (2010), Sedimentology, 57, 1088–1125

Godet¹,

Föllmi²,

Bodin

et al. 2011

Sedimentology

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Section: Chemostratigraphysupporting

confidence: 66%

A Late Barremian age for the onset of Urgonian‐type facies in the Swiss Jura Mountains Reply to the discussion by Conrad et al. on “Stratigraphic, sedimentological and palaeoenvironmental constraints on the rise of the Urgonian Platform in the western Swiss Jura” by Godet et al. (2010), Sedimentology, 57, 1088–1125

Godet¹,

Föllmi²,

Bodin

et al. 2011

Sedimentology

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“…dated outcrops of the Grand Essert, Gorges de l'Orbe, and Vallorbe formations with Sr-isotope ratios (measured on brachiopods) and calibrated them on ammonite zones, and they also furnished some K-Ar numerical ages (measured on glauconite). Their interpretations, however, are partly in contradiction with the biostratigraphy presented here, and the opposing views have not yet been reconciled (Charollais et al 2013a;Godet et al 2013;Clavel et al 2013Clavel et al , 2014.…”

Section: Dating Of the Formationscontrasting

confidence: 38%

“…3). The predominantly late Hauterivian age, however, is questioned by Godet et al ( , 2013 who advocate a late Barremian age.…”

Section: Vallorbe Formationmentioning

confidence: 99%

The Cretaceous of the Swiss Jura Mountains: an improved lithostratigraphic scheme

Strasser

Charollais

Conrad³

et al. 2016

Swiss J Geosci

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“…() and Godet et al . (), who applied this method to rudists of the Urgonian Formation in eastern France (Fig. ; cf.…”

Section: The Importance Of Precise Age Control In Platform Sedimentsmentioning

confidence: 97%

Palaeoceanography of Lower Cretaceous Alpine platform carbonates

Föllmi

Godet

2013

Sedimentology

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Shallow‐water carbonate platforms evolve in an interplay of local, regional and global dynamics, thereby generating a detailed record of environmental conditions. Platform sediments constitute important archives of past environmental change and, as such, they are increasingly analysed for the information they contain on wider‐scale patterns. The integration of this information with palaeoceanographic data obtained from deeper‐water sediments provides a powerful tool to develop a more diverse and complete image of past environmental change. In this contribution, the remains of the northern Tethyan carbonate platform of Early Cretaceous age cropping out in the western Swiss Jura and the Helvetic Alps are used to illustrate the advantage of a palaeoceanographic approach in their interpretation. The tools applied are biostratigraphy and chemostratigraphy (carbon and strontium isotopes) in order to obtain a precise age model for correlation with (hemi‐)pelagic sediments in adjacent basins, sequence stratigraphy as a means to reconstruct the impact of sea‐level change, phosphorus stratigraphy as a proxy for trophic levels, facies and microfacies analyses as a gateway to gain better insight into the carbonate factory, and the detailed analysis of platform‐drowning unconformities as an indicator of wider‐scale palaeoenvironmental change. It is shown that changes from periods of predominantly photozoan to predominantly heterozoan carbonate production near the Berriasian–Valanginian boundary and middle early Aptian coincided with substantial increases in phosphorus burial rates and major carbon‐isotope excursions. Furthermore, the majority of the platform‐drowning episodes occurred just prior to and during episodes of major palaeoenvironmental change and, last but not least, the platform itself may have influenced the chemistry of adjacent basins and the carbon‐isotope composition of associated carbonates by the export of periplatform ooze.

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Reconciling strontium-isotope and K–Ar ages with biostratigraphy: the case of the Urgonian platform, Early Cretaceous of the Jura Mountains, Western Switzerland

Cited by 19 publications

References 36 publications

The Cretaceous of the Swiss Jura Mountains: an improved lithostratigraphic scheme

Palaeoceanography of Lower Cretaceous Alpine platform carbonates

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