Bridging the Faraoni and Selli oceanic anoxic events: late Hauterivian to early Aptian dysaerobic to anaerobic phases in the Tethys

Föllmi, Karl B.; Bôle, Maximilien; Jammet, N.; Froidevaux, Pascal; Godet, Alexis; Bodin, Stéphane; Adatte, Thierry; Matera, Virginie; Fleitmann, Dominik; Spangenberg, Jorge E.

doi:10.5194/cp-8-171-2012

Cited by 33 publications

(10 citation statements)

References 66 publications

(106 reference statements)

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“…() and Föllmi et al . (); large igneous provinces after Courtillot & Renne (), Tejada et al . () and Thiede & Vasconcelos (); ocean‐crust production rates after Larson (); whole‐rock carbon‐isotope record after Emmanuel & Renard (), Hennig et al .…”

Section: Evidence For Global Palaeoenvironmental Change In Platform Smentioning

confidence: 99%

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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Section: Evidence For Global Palaeoenvironmental Change In Platform Smentioning

confidence: 99%

Palaeoceanography of Lower Cretaceous Alpine platform carbonates

Föllmi

Godet

2013

Sedimentology

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“…The Faraoni, Mid-Barremian and Taxy events are the three episodes of environmental change covered in this analysis (Föllmi, 2012). These episodes correspond to increasing occurrence in organic-rich layers, documented throughout the Tethyan area and possibly J o u r n a l P r e -p r o o f extended to the Northern Atlantic (Cecca et al, 1994;Machhour et al, 1998;Mutterlose and Boeckel, 1998;Baudin, 2005;Föllmi et al, 2012;Stein et al, 2012;Yilmaz et al, 2012;Baudin and Riquier, 2014). Kaolinite contents, changes in the carbonate producers and assemblages of pelagic planktonic communities point to more humid and maybe warmer conditions during the occurrence of these environmental events (Föllmi et al, 1994;Moiroud et al, 2012;Föllmi, 2012;Aguado et al, 2014a), which led to enhanced weathering on continents, fertilization of the upper water column and biotic changes (Company et al, 2005;Aguado et al, 2014a).…”

Section: A Control Of the 24-myr Cycle On The Episodes Of Environmental Changementioning

confidence: 90%

“…From biostratigraphy and lithology, the Faraoni equivalent levels are also identified in the Arroyo Gilico section (Aguado et al, 2014a). The Mid-Barremian Event, defined in the Umbria-Marche Basin as an increase in organic-rich deposits, corresponds to an increase in the δ 13 C carb values in the late early Barremian (Sprovieri et al, 2006;Föllmi et al, 2012). In the Arroyo Gilico section, this increase in δ 13 C carb values occurs in the Moutonianum Zone and is associated to an episode of increased runoff, humid conditions and eutrophication of the upper water column (Aguado et al, 2014a;Fig.…”

Section: Geological Settingmentioning

confidence: 99%

Integrated astrochronology of the Barremian Stage (Early Cretaceous) and its biostratigraphic subdivisions

Martínez

Aguado

Sandoval

et al. 2020

Global and Planetary Change

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This is a PDF file of an article that has undergone enhancements after acceptance, such as the addition of a cover page and metadata, and formatting for readability, but it is not yet the definitive version of record. This version will undergo additional copyediting, typesetting and review before it is published in its final form, but we are providing this version to give early visibility of the article. Please note that, during the production process, errors may be discovered which could affect the content, and all legal disclaimers that apply to the journal pertain.

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“…The oceanic circulation patterns reconstructed for the Vocontian Basin indicate east‐to‐west currents along the northern coast of the basin (Delamette, ; Föllmi et al , ). Moreover, in other parts of the Tethys Ocean, the OAE 1a is classically associated with poorly oxygenated bottom waters, as evidenced by the widespread deposition of black shales, and with strong enrichments in redox‐sensitive elements (Stein et al , ; Föllmi et al , ; Westermann et al , ; Khaled et al , ). Consequently, the waters pushed into the Vocontian Basin via this narrow seaway could have originally been (partly) depleted in redox‐sensitive elements through the so‐called ‘basin reservoir effect’ (Algeo and Lyons, ; Algeo and Tribovillard, ), and the limited renewal of deep‐waters could have further enhanced the initial depletion in dissolved, redox‐sensitive elements in the Vocontian Basin water‐mass.…”

Section: Interpretationsmentioning

confidence: 99%

Turbidite‐induced re‐oxygenation episodes of the sediment‐water interface in a diverticulum of the Tethys Ocean during the Oceanic Anoxic Event 1a: The French Vocontian Basin

Caillaud

Quijada

Huet

et al. 2020

The Depositional Record

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Widespread anoxic events affected the Tethys Ocean during the Mesozoic. The Ocean Anoxic Event 1a (Early Aptian), expressed as the Selli Level or Goguel Level (GL) in European basins. The GL was deposited in the French Vocontian Basin, a semi-enclosed basin connected to the Tethys Ocean. This study presents an integrated approach (Rock Eval, clay minerals, grain-size, inorganic geochemistry and molecular biomarkers), applied to four sections in the basin distributed along a proximal-distal transect. This study shows that the GL was perturbed by turbidites.In particular, the results demonstrate: (a) a homogeneous redox status of the basin that experienced oxic to suboxic conditions, according to trace element distributions and (b) low organic matter contents (total organic carbon ca 1 wt%) in the three sections where turbiditic deposits are observed. The distal, condensed section exhibits the highest organic matter contents (total organic carbon >3 wt%). In addition, the presence of gammacerane and isorenieratene derivatives in the distal sections suggests that the water-column was intermittently stratified, with hypoxia developing in the photic zone. This stratification did not result from strong surface productivity but more likely from: (a) limited renewal of deep water in the basin; (b) reputedly high surface-water palaeotemperatures during the Early Aptian; and (c) the influx of waters, possibly depleted in free oxygen and in some dissolved trace elements, into the basin. The turbiditic inputs, in addition to organic matter dilution in the sediments and a brief rupture of the water-column stratification in the proximal areas of the basin, ventilated the sea floor and more specifically re-oxidized the sedimentwater interface as well as underlying sediments. Such episodes of benthic re-oxygenation could have altered the long-term palaeoredox record, even in the distal sections where reducing conditions prevailed during deposition. In the area deprived of turbiditic input, sedimentary condensation, coupled with low oxygen conditions, furthered organic matter preservation and concentration.

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Bridging the Faraoni and Selli oceanic anoxic events: late Hauterivian to early Aptian dysaerobic to anaerobic phases in the Tethys

Cited by 33 publications

References 66 publications

Palaeoceanography of Lower Cretaceous Alpine platform carbonates

Palaeoceanography of Lower Cretaceous Alpine platform carbonates

Integrated astrochronology of the Barremian Stage (Early Cretaceous) and its biostratigraphic subdivisions

Turbidite‐induced re‐oxygenation episodes of the sediment‐water interface in a diverticulum of the Tethys Ocean during the Oceanic Anoxic Event 1a: The French Vocontian Basin

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