Synthesis of micropaleontological age constraints for the reconstruction of the Tethyan realm in the Lesser Caucasus (Armenia, Karabagh)
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...
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Académie des sciences
2023-04-01
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| Series: | Comptes Rendus. Géoscience |
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| Online Access: | https://comptes-rendus.academie-sciences.fr/geoscience/articles/10.5802/crgeos.212/ |
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| author | Danelian, Taniel Triantaphyllou, Maria Seyler, Monique Galoyan, Ghazar Grigoryan, Arayik Sosson, Marc |
| author_facet | Danelian, Taniel Triantaphyllou, Maria Seyler, Monique Galoyan, Ghazar Grigoryan, Arayik Sosson, Marc |
| author_sort | Danelian, Taniel |
| collection | DOAJ |
| description | 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. |
| format | Article |
| id | doaj-art-d2b33a8fc56244b68771d27f64717533 |
| institution | Kabale University |
| issn | 1778-7025 |
| language | English |
| publishDate | 2023-04-01 |
| publisher | Académie des sciences |
| record_format | Article |
| series | Comptes Rendus. Géoscience |
| spelling | doaj-art-d2b33a8fc56244b68771d27f647175332025-02-07T10:40:57ZengAcadémie des sciencesComptes Rendus. Géoscience1778-70252023-04-01355S2536610.5802/crgeos.21210.5802/crgeos.212Synthesis of micropaleontological age constraints for the reconstruction of the Tethyan realm in the Lesser Caucasus (Armenia, Karabagh)Danelian, Taniel0https://orcid.org/0000-0001-9496-2363Triantaphyllou, Maria1https://orcid.org/0000-0001-7508-7508Seyler, Monique2https://orcid.org/0000-0002-7854-4361Galoyan, Ghazar3Grigoryan, Arayik4https://orcid.org/0009-0003-3146-166XSosson, Marc5Univ. Lille, CNRS, UMR 8198-Evo-Eco-Paleo, F-59000 Lille, FranceNational and Kapodistrian University of Athens, Faculty of Geology and Geoenvironment, Panepistimioupolis, 15784 Athens, GreeceUniv. Lille, CNRS, Univ. Littoral Côte d’Opale, UMR 8187, LOG, Laboratoire d’Océanologie et de Géosciences, F 59000 Lille, FranceInstitute of Geological Sciences of the National Academy of Sciences of the Republic of Armenia, 24A, Marshal Baghramyan Avenue, Yerevan 0019, Republic of ArmeniaInstitute of Geological Sciences of the National Academy of Sciences of the Republic of Armenia, 24A, Marshal Baghramyan Avenue, Yerevan 0019, Republic of ArmeniaUniversité Côte d’Azur, CNRS, Observatoire de la Côte d’Azur, IRD, UMR Géoazur, 250 rue A. Einstein, 06560 Valbonne, FranceWe 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.https://comptes-rendus.academie-sciences.fr/geoscience/articles/10.5802/crgeos.212/MicropaleontologyRadiolariaOphioliteTethysArmeniaLesser Caucasus |
| spellingShingle | Danelian, Taniel Triantaphyllou, Maria Seyler, Monique Galoyan, Ghazar Grigoryan, Arayik Sosson, Marc Synthesis of micropaleontological age constraints for the reconstruction of the Tethyan realm in the Lesser Caucasus (Armenia, Karabagh) Comptes Rendus. Géoscience Micropaleontology Radiolaria Ophiolite Tethys Armenia Lesser Caucasus |
| title | Synthesis of micropaleontological age constraints for the reconstruction of the Tethyan realm in the Lesser Caucasus (Armenia, Karabagh) |
| title_full | Synthesis of micropaleontological age constraints for the reconstruction of the Tethyan realm in the Lesser Caucasus (Armenia, Karabagh) |
| title_fullStr | Synthesis of micropaleontological age constraints for the reconstruction of the Tethyan realm in the Lesser Caucasus (Armenia, Karabagh) |
| title_full_unstemmed | Synthesis of micropaleontological age constraints for the reconstruction of the Tethyan realm in the Lesser Caucasus (Armenia, Karabagh) |
| title_short | Synthesis of micropaleontological age constraints for the reconstruction of the Tethyan realm in the Lesser Caucasus (Armenia, Karabagh) |
| title_sort | synthesis of micropaleontological age constraints for the reconstruction of the tethyan realm in the lesser caucasus armenia karabagh |
| topic | Micropaleontology Radiolaria Ophiolite Tethys Armenia Lesser Caucasus |
| url | https://comptes-rendus.academie-sciences.fr/geoscience/articles/10.5802/crgeos.212/ |
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