Schistes bitumineux

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Schistes bitumineux
Stratigraphic range: Early Jurassic, ~183  Ma
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Schistes bitumineux Luxembourg.png
Outcrop of the Schistes bitumineux at Bascharage
Type Geological formation
Unit of Sachrang Formation [1]
Sub-units
  • Bommelscheuer Zone
  • Exaratum Subchronozone
  • Falciferum Subchronozone
  • Op Zämer Zone
  • Serpentinum Chronozone
Underlies Marnes à Bifrons Formation
Thickness3.6 metres (12 ft) to 7.2 metres (24 ft) thick
Lithology
Primary Shale
Other Apatite and limonite
Location
CountryFlag of Luxembourg.svg  Luxembourg
Extent Edward Steichen Industrial Zone, Bascharage [2]

The Schistes bitumineux (French for Oil shale/Bituminous shale) is an Early Jurassic geologic formation in Bascharage, Luxembourg that is located within an oil shale, hence the name. [3] [4]

Contents

Geology

This formation may be part of the larger Sachrang Formation, [5] which also outcrops in Luxembourg, among other countries. The type locality is the Edward Steichen Industrial Zone near Bascharage and it is part of a near-continuous layer of hard, finely laminated, micritic carbonate nodules. [2]

The Schistes bitumineux underlies the middle Toarcian Marnes à Bifrons Formation, [1] which outcrops in both Luxembourg and France.

History

Fossils have been found in the Schistes bitumineux since at least the 1930s, [6] and the formation has been studied since at least 1938. [7] The Schistes bitumineux was identified as being a unit of the Sachrang Formation shortly after its discovery. [1]

Henrotay et al. (1989) produced a detailed list of the known fossils from the Schistes bitumineux. [8]

The Serpentinum Chronozone and Exaratum Subchronozone were identified by Page (2003) based on ammonite remains found in the area. [9]

In May 2022, during the Lost Ocean Digging, the Luxembourg National Museum of Natural History excavated the lower part of the formation for the first time. The lower part of the formation was described in more detail by Fuchs, Weis & Thuy (2024). [2]

Paleofauna and paleoflora

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References

  1. 1 2 3 4 Hermoso, M.; Delsate, D.; Baudin, F.; Le Callonnec, L.; Minoletti, F.; Renard, M.; Faber, A. (2014). Record of Early Toarcian carbon cycle perturbations in a nearshore environment: the Bascharage section (easternmost Paris Basin) (PDF) (Report). Geochemistry. doi: 10.5194/sed-6-1073-2014 .
  2. 1 2 3 4 5 6 7 8 9 10 Fuchs, D.; Weis, R.; Thuy, B. (2024). "Simoniteuthis, a new vampyromorph coleoid with prey in its arms from the Early Jurassic of Luxembourg". Swiss Journal of Palaeontology. 143 (1). 6. Bibcode:2024SwJP..143....6F. doi: 10.1186/s13358-024-00303-y .
  3. Weishampel, et al. (2004). "Dinosaur distribution."
  4. 1 2 Johnson, Michela M.; Young, Mark T.; Brusatte, Stephen L. (2020). "The phylogenetics of Teleosauroidea (Crocodylomorpha, Thalattosuchia) and implications for their ecology and evolution". PeerJ. 8: e9808. doi: 10.7717/peerj.9808 . PMC   7548081 . PMID   33083104.
  5. HENROTAY, M., MARQUES, D., Paicheler, J. C., Gall, J. C., & NEL, A. (1998). Le Toarcien inférieur des régions de Bascharage et de Bettembourg (Grand-Duché du Luxembourg): évidences paléontologiques et sédimentologiques d'environnements restreints proches de l'émersion. Geodiversitas, 20(2), 263-284.
  6. 1 2 Bode, A. (1933). Chondroteuthis wunnenbergi n.g. n.sp., eine neue Belemnoideenform, in günstiger Erhaltung. Sonderabdruck Aus Dem 25 Jahresbericht Des Niedersächsischen Geologischen Vereins Zu Hannover (geologische Abteilung Der Naturhistorischen Gesellschaft Zu Hannover),25, 33–66.
  7. Woodward, A. S. (1938). On a specimen of Pachycormus from the Schistes de Grandcour (sic) at Bascharage. Bulletin Du Musée Royal D’histoire Naturelle De Belgique,14(48), 1–2.
  8. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 Henrotay, M.; Marques, D.; Paicheler, J. C.; Gall, J. C.; Nel, A. (1998). "Le Toarcien inférieur des régions de Bascharage et de Bettembourg (grand-duché du Luxembourg) : évidences paléontologiques et sédimentologiques d'environnements restreints proches de l'émersion" (PDF). Geodiversitas. 20 (2): 263–284.
  9. Page, K. (2003). The lower Jurassic of Europe: Its subdivision and correlation. Geological Survey of Denmark and Greenland Bulletin,1, 21–59.
  10. 1 2 3 Thuy & Weis, unpublished data
  11. Teichert, S., & Nützel, A. (2015). Early Jurassic anoxia triggered the evolution of the oldest holoplanktonic gastropod Coelodiscus minutus by means of heterochrony. Acta Palaeontologica Polonica,60(2), 269–276.
  12. Szwedo, J., Weis, R. & A. Nel (2017). A bizarre sternorrhynchan wing from the Lower Jurassicof Luxembourg (Hemiptera: Sternorrhyncha: Pincombeomorpha?). Historical Biology, 31(6), 806–812.