Synthesis of micropaleontological age ...
Document type :
Article dans une revue scientifique: Article original
DOI :
Title :
Synthesis of micropaleontological age constraints for the reconstruction of the Tethyan realm in the Lesser Caucasus (Armenia, Karabagh)
Author(s) :
Danelian, Taniel [Auteur]
Évolution, Écologie et Paléontologie (Evo-Eco-Paleo) - UMR 8198 [Evo-Eco-Paléo (EEP)]
Université Lille Nord (France)
Triantaphyllou, Maria [Auteur]
National and Kapodistrian University of Athens [NKUA]
Seyler, Monique [Auteur]
Laboratoire d’Océanologie et de Géosciences (LOG) - UMR 8187 [LOG]
Université Lille Nord (France)
Galoyan, Ghazar [Auteur]
Institute of Geological Sciences of the National Academy of Sciences of Armenia [IGS NAS RA]
Grigoryan, Arayik [Auteur]
Institute of Geological Sciences of the National Academy of Sciences of Armenia [IGS NAS RA]
Sosson, Marc [Auteur]
Géoazur [GEOAZUR 7329]

Évolution, Écologie et Paléontologie (Evo-Eco-Paleo) - UMR 8198 [Evo-Eco-Paléo (EEP)]
Université Lille Nord (France)
Triantaphyllou, Maria [Auteur]
National and Kapodistrian University of Athens [NKUA]
Seyler, Monique [Auteur]

Laboratoire d’Océanologie et de Géosciences (LOG) - UMR 8187 [LOG]
Université Lille Nord (France)
Galoyan, Ghazar [Auteur]
Institute of Geological Sciences of the National Academy of Sciences of Armenia [IGS NAS RA]
Grigoryan, Arayik [Auteur]
Institute of Geological Sciences of the National Academy of Sciences of Armenia [IGS NAS RA]
Sosson, Marc [Auteur]
Géoazur [GEOAZUR 7329]
Journal title :
Comptes Rendus. Géoscience
Pages :
1 - 14
Publisher :
Académie des sciences (Paris)
Publication date :
2023-04-20
ISSN :
1631-0713
English keyword(s) :
Micropaleontology Radiolaria Ophiolite Tethys Armenia Lesser Caucasus
Micropaleontology
Radiolaria
Ophiolite
Tethys
Armenia
Lesser Caucasus
Micropaleontology
Radiolaria
Ophiolite
Tethys
Armenia
Lesser Caucasus
HAL domain(s) :
Planète et Univers [physics]
English abstract : [en]
We present new biostratigraphic results from two ophiolite outcrops in Armenia. The discovery of upper Tithonian-lower Berriasian diagnostic radiolarian species (Vallupus gracilis Li and Sashida) in the lower radiolarites ...
Show more >We present new biostratigraphic results from two ophiolite outcrops in Armenia. The discovery of upper Tithonian-lower Berriasian diagnostic radiolarian species (Vallupus gracilis Li and Sashida) in the lower radiolarites of the Dali section allows to date more accurately submarine lava eruptions of transitional to alkaline composition. The radiolarian results also indicate that blocks of shallow-water carbonates slid into the basin during this time interval. At Vedi, upper Coniacian-Santonian calcareous nannofossils identified in marls of the post-obduction sedimentary cover refine previous age data. Synthesis of the existing bio-chronostratigraphic constraints in Armenia and Karabagh sheds light to the depositional and magmatic history of Tethys in the Lesser Caucasus and highlights the age constraints of fossils on the timing of ophiolite obduction in the region.Show less >
Show more >We present new biostratigraphic results from two ophiolite outcrops in Armenia. The discovery of upper Tithonian-lower Berriasian diagnostic radiolarian species (Vallupus gracilis Li and Sashida) in the lower radiolarites of the Dali section allows to date more accurately submarine lava eruptions of transitional to alkaline composition. The radiolarian results also indicate that blocks of shallow-water carbonates slid into the basin during this time interval. At Vedi, upper Coniacian-Santonian calcareous nannofossils identified in marls of the post-obduction sedimentary cover refine previous age data. Synthesis of the existing bio-chronostratigraphic constraints in Armenia and Karabagh sheds light to the depositional and magmatic history of Tethys in the Lesser Caucasus and highlights the age constraints of fossils on the timing of ophiolite obduction in the region.Show less >
Language :
Anglais
Peer reviewed article :
Oui
Audience :
Internationale
Popular science :
Non
Source :
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