The Cenomanian–Turonian Boundary Event (CTBE) on the southern slope of the Subalpine Basin (SE France) and its bearing on a probable tectonic pulse on a larger scale

Groshény, Danièle; Ferry, Serge; Lécuyer, Christophe; Thomas, A Williams; Desmares, Delphine

doi:10.1016/j.cretres.2016.11.009

Cited by 30 publications

(47 citation statements)

References 81 publications

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“…the relative abundance of each morphotype reflecting ecological preferences (Ericson, 1959;Bandy, 1960;Boltovskoy, 1973;Bauch et al, 2003;Darling et al, 2006;Darling and Wade, 2008;Ujiie et al, 2010). A similar relationship has been identified among M. delrioensis at the Cenomanian-Turonian stage boundary in several mid-latitude sites (Desmares et al, 2016;Grosheny et al, 2016), including the Pueblo type section (Fig. 9).…”

Section: Coiling Reversal Events Among M Delrioensissupporting

confidence: 59%

“…and provide a continuous signal throughout the Cenomanian-Turonian boundary interval (Desmares et al, 2016). Several reversals in coiling direction have been characterised in midlatitude sections of the Western Interior Seaway and of the Umbria-Marche and Vocontian basins (Desmares et al, 2016;Grosheny et al, 2016). The recognition of these events at Mézières-sur-Ponthouin provides stratigraphic markers.…”

Section: Carantonensismentioning

confidence: 99%

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High-resolution biostratigraphy and chemostratigraphy of the Cenomanian stratotype area (Le Mans, France)

Desmares¹,

Testé

Broche³

et al. 2020

Cretaceous Research

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Section: Coiling Reversal Events Among M Delrioensissupporting

confidence: 59%

Section: Carantonensismentioning

confidence: 99%

High-resolution biostratigraphy and chemostratigraphy of the Cenomanian stratotype area (Le Mans, France)

Desmares¹,

Testé

Broche³

et al. 2020

Cretaceous Research

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“…The Cenomanian-Turonian boundary is also marked by a strong uplift of the western margin of the Vocontian Trough that is responsible for a forced regression that shifted the coastal sandstones seaward about 80 km to the east (MALARTRE & FERRY, 1993;GROSHENY et al, 2017) (see also Fig. 2C).…”

Section: Paleogeographic Changes In the Midle Rhône Valley And The Wementioning

confidence: 99%

“…The black shale is also present in the La Charce syncline along the axis of the Vocontian Trough. A recent synthesis (GROSHENY et al, 2017) has shown that the event is not accompanied by a transgression in the French Alps (Fig. 30).…”

Section: ) Latest Cenomanian Oae2mentioning

confidence: 99%

“…FR, forced regression due to uplift in the Rhodanian saddle; FP, forced progradation of the carbonate platform east of the strike-slip Rouaine fault and in the south Provence basin; LBS, UBS, lower, upper black shale of Vocontian sections; MPB, equiv. of the mid-Plenus bed of the Eastbourne reference section in southern England (see correlation in GROSHENY et al, 2017), T, beginning of the relative sea-level rise in each area, based on platform to basin stratigraphic transects constrained by isotope data (work in progress).…”

Section: ) Early Albian Oae1bmentioning

confidence: 99%

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Some key Lower Cretaceous sites in Drôme (SE France)

Granier¹

2017

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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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The Cenomanian–Turonian Boundary Event (CTBE) on the southern slope of the Subalpine Basin (SE France) and its bearing on a probable tectonic pulse on a larger scale

Cited by 30 publications

References 81 publications

High-resolution biostratigraphy and chemostratigraphy of the Cenomanian stratotype area (Le Mans, France)

High-resolution biostratigraphy and chemostratigraphy of the Cenomanian stratotype area (Le Mans, France)

Some key Lower Cretaceous sites in Drôme (SE France)

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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