On certain Neocomian – Aptian calcareous algae in the West of Kopet Dagh (NE-Iran) – Systematics and compared biogeography, focusing on Dasycladales

Document Type : Research Paper

Authors

1 Department of Geology, Faculty of Science, Ferdowsi University of Mashhad, Mashhad, Iran

2 Dipartimento di Scienze della Terra, dell'Ambiente e delle Risorse

3 3. 71 chemin de Planta, 1223 Cologny, Switzerland

Abstract

In Western Kopet Dagh, the lower Cretaceous carbonate series contains distinctive assemblages of calcareous algae, chiefly Dasycladales which are primarily studied in this work. Based on the significant presence of certain species, the Zard Formation, assigned to the Valanginian and, in its upper part, to the Hauterivian or base of the Barremian, is subdivided into two intervals, respectively A and B. Higher up, the Urgonian-type Tirgan Formation, assigned to the Barremian and Lower Aptian, is subdivided into intervals C and D. On this occasion, the taxonomy and systematics of 17 species of Dasycladales and one incertae sedis found in the series are discussed, in relation to some recent standpoints. Out of this inventory, the biogeographic distribution of 11 species is particularly interesting. During the Lower Cretaceous, the Kopet Dagh region was quite isolated, northeast of the Izanca, a branch of the Tethys. Assemblages encountered in this region are compared with other areas, encompassing Iberia to the northern margin of West Gondwana. Finally, the stratigraphic and/or biogeographic distribution of two species appears to be partially related, in one case to the Valanginian OAE1 event, in another case to one or more obstacles in relation to the paleotectonic context.

Keywords


Article Title [فارسی]

On certain Neocomian – Aptian calcareous algae in the West of Kopet Dagh (NE-Iran) – Systematics and compared biogeography, focusing on Dasycladales

Abstract [فارسی]

In Western Kopet Dagh, the lower Cretaceous carbonate series contains distinctive assemblages of calcareous algae, chiefly Dasycladales which are primarily studied in this work. Based on the significant presence of certain species, the Zard Formation, assigned to the Valanginian and, in its upper part, to the Hauterivian or base of the Barremian, is subdivided into two intervals, respectively A and B. Higher up, the Urgonian-type Tirgan Formation, assigned to the Barremian and Lower Aptian, is subdivided into intervals C and D. On this occasion, the taxonomy and systematics of 17 species of Dasycladales and one incertae sedis found in the series are discussed, in relation to some recent standpoints. Out of this inventory, the biogeographic distribution of 11 species is particularly interesting. During the Lower Cretaceous, the Kopet Dagh region was quite isolated, northeast of the Izanca, a branch of the Tethys. Assemblages encountered in this region are compared with other areas, encompassing Iberia to the northern margin of West Gondwana. Finally, the stratigraphic and/or biogeographic distribution of two species appears to be partially related, in one case to the Valanginian OAE1 event, in another case to one or more obstacles in relation to the paleotectonic context.

Keywords [فارسی]

  • Early Cretaceous
  • microfossils
  • calcareous algae
  • Kopet-Dagh basin
Afshar-Harb, A., 1969. A brief history of geological exploration and geology of the Sarakhs area and the Khangiran gas field. Bulletin of the Iranian Petroleum Institute, 37: 86–96 (in Persian).##
Afshar-Harb, A., 1979. The stratigraphy, tectonics and petroleum geology of Kopet-Dagh region, northern Iran. Unpublished PHD thesis, Petroleum Geology Section, Imperial College, London, 316pp.##
Afshar-Harb, A., 1994. Geology of the Kopet-Dagh. Tehran, Geological Survey of Iran, 256pp (in Persian).##
Aghanabati, A., Rezaie, A., 2008. Stratigraphic chart of Iran. Geological Survey of Iran.##
Barattolo, F., Cozzi A., Romano A., 2008. "New dasycladalean algae from the Middle Norian (Upper Triassic) of northern Italy (Mt. Pramaggiore, Carnic Prealps)." Facies 54: 549–580.##
Barattolo, F., Carras, N., Conrad M. A., Radoičić, R., 2019. "Falsolikanella campanensis (Azéma and Jaffrezo, 1972) Granier, 1987 revisited on type material, evidence of polyphysacean nature (green algae)." Journal of Paleontology.##
Berberian, M., King, G.C.P., 1981. Toward a paleogeography and tectonic evolution of Iran. Canadian Journal Earth Sciences, 18:210–265.##
Berger, S., Kaever, J., 1992. Dasycladales. An illustrated monograph of a fascinating algal order. Thieme, Stuttgart, 247pp.##
Bodrogi, I., Bona J., Lobitzer H., 1994. Vergleichende Untersuchung der Foraminiferen- und Kalkalgen-Assoziationen der Urgon-Entwicklung des Schrattenkalks in Vorarlberg (Osterreich) und der Nagyharsany Kalkstein Formation des Villany-Gebirges (Ungarn). Jubiläumsschrift 20 Jahre Geologische Zusammenarbeit Osterreich-Ungarn. H. Lobitzer, G. Csaszar and A. Dauer. Wien, Becs. Teil 2: 225–283.##
Bosence, D.W.J., 1991. Coralline algae: mineralization, taxonomy, and palaeoecology. In: Riding, R., (ed.) Calcareous algae and stromatolites. Springer, Heidelberg, 98–113.##
Bucur, I.I., 1992. "Revised description of some dasyclad species from the Romanian Lower Cretaceous." Revue de Paléobiologie 11(2): 447–461.##
Bucur, I.I., 1993. Some new or poorly known calcareous algae (Dasycladales, Gymnoco-diaceae) in the Lower Cretaceous deposits from the Resita-Moldava Noua Zone (Sou-thern Carpathians, Romania). Revista Española de 132 Fateh Bahari et al. Geopersia, 10 (1), 2020
Micropaleontologia, Madrid, 25: 93–126.##
Bucur, I.I., 1999. "Lower Cretaceous dasyclad algae from the Padurea Craiului Massif (Northern Apuseni Mountains, Romania)." Acta Palaeontologica Romaniae 2: 53–72.##
Bucur, I.I., 1999. Stratigraphic significance of some skeletal algae (Dasycladales, Caulerpales) of the Phanerozoic. In: Farinacci, A. & Lord, A. R. (Eds.), Depositional episods and bioevents. Palaeopelagos Spec. Publ. 2: 53-104.##
Bucur, I.I., 2002. New remarks on Kopetdagaria sphaerica MASLOV, 1960. Reasearch advances in calcareous algae and microbial carbonates, Cluj-Napoca, August 29 - September 5, 2001, Cluj University Press.##
Bucur, I.I., Rashidi, K., Senowbari-Daryan, B., 2012. Early Cretaceous calcareous algae from Central Iran (Taft formation, south of Aliabad, near Yazd). Facies, 58: 605-636.##
Bucur, I.I., Majidifard, M.R., Senowbari-Daryan, B., 2013. Early Cretaceous calcareous benthic microfossils from the Eastern Alborz and Western Kopet Dagh (Northern Iran) and their stratigraphic significance. Acta Palaeontologica Romaniae, 9: 23-37.##
Bucur, I. I., Schlagintweit, F., Rashidi K., Saberzadeh, B., 2016. "Morelletpora turgida (Radoičić, 1975 non 1965) a Tethyan calcareous green alga (Dasycladales): taxonomy, stratigraphy and paleaogeography." Cretaceous Research 58:168–182.##
Bucur, I.I., Yarahmadzahi, H., Mircescu, C.V., 2018. "The Lower Cretaceous Tirgan Formation in the Gelian section (Kopet dagh, North Iran): microfacies, microfossils, and their biostratigraphic significance." Acta Palaeontologica Romaniae 15(1): 13–33.##
Carras, N., Conrad, M.A., Radoičić, R., 2006. Salpingoporella, a common genus of Mesozoic Dasycladales (calcareous green algae). Review Paleobiology 25:457–517##
Carević, I., Taherpour Khalil Abad, M., Ljubović-Obradović, D., Vaziri, S.H., Mirković, M., Aryaei, A.A., Stejić, P., Ashouri, A.R., 2013. Comparisons between the Urgonian platform carbonates from eastern Serbia (Carpatho- Balkanides) and northeast Iran (Kopet-Dagh Basin): Depositional facies, microfacies, biostratigraphy, palaeoenvironments and palaeoecology. Cretaceous Research, 40: 110–130.##
Conrad, M.A., Peybernès B., 1976. "Hauterivian-Albian Dasycladaceae from the Urgonian limestones in the French and Spanish Eastern Pyrenees." Geologica Romana 15: 175–197, 116 figs##
Conrad, M.A., Schlagintweit F., Bucur, I. I., 2009. "Piriferella somalica (Dasycladaceae, calcareous green algae) from Tithonian deposits in the Northern Calcareous Alps – Synonymy followed by an emendation of Piriferella Sokač 1996 and Similiclypeina Bucur 1993 " Annali dell’Università di Ferrara, Sez. Museologia Scientifica e Naturalistica Volume speciale, IFAA - 6th Regional Symposium – Milan, Italy 2009.##
De Castro, P., 1997. Introduzione allo studio in sezione sottile delle dasicladali fossili. Quad Acad Pontaniana 22: 1–261.##
Deloffre, R., Génot P., 1982. "Les algues Dasycladales du Cénozoïque." Bull. Cent. Rech. Explor.-Prod. Elf-Aquitaine Mém. 4: 247 pp.##
Deloffre, R., 1989. "Nouvelle taxonomie des Algues Dasycladales - New taxonomy of Dasycladale Algae." Bull. Centres Rech. Explor.-Prod. Elf Aquitaine 12: 165–217.##
Dragastan, O., 1999. Early Cretaceous algae of Aliman (south Dobrogea): a revision and description of two new species from east Carpathians. Acta Palaeontologica Romaniae, 2: 125–137.##
Elliott, G.F., 1963. "Problematical microfossils from the Cretaceous and Palaeocene of the Middle East." Palaeontology 6, Part 2: 293-300, 292 pls.##
Elliott, G.F., 1977. A consideration of the tribe Thyrsoporelleae, dasyclad algae, PALAENTOLOGY, 20: 705–714.##
Gheiasvand, M., Föllmi, K.B., Arnaud Vanneau, A., Adatte, T., Spangenberg, J.E., Ghaderi, A., Ashouri, A.R., 2019.##
New stratigraphic data for the Lower Cretaceous Tirgan Formation, Kopet-Dagh Basin, NE Iran. Arabian Journal of Geosciences, 12(5), DOI: 10.1007/s12517-019-4248-9.##
Granier, B., 1994. "The genus Actinoporella (GUMBEL in ALTH, 1881) and its representatives. A review." Beiträge zur Paläontologie 19: 113–127.##
Granier, B., Deloffre R., 1993. "Inventaire critique des algues Dasycladales fossiles - II° partie- Les algues Dasycladales du Jurassique et du Crétacé." Revue de Paléobiologie 12(1): 19–65.##
Granier, B., Hofmann F., 2002. Un guide pour la collection de Julius Pia. 2ème partie. Research advances in calcareous algae and microbial carbonates, Cluj-Napoca, August 29 - September 5, 2001, Cluj University Press.##
Granier, B., Bucur, I.I., 2019. "Le genre Bakalovaella BUCUR, 1993 (Dasycladeae, Dasycladaceae), et description de son plus ancien représentant crétacé." Carnets de Géologie / Notebooks on Geology 19(1): 1–19.##
Granier, B., Dias-Brito, D., Bucur I.I., Tibana P., 2013. "Brasiliporella, a new mid-Cretaceous dasycladacean genus: the earliest record of the Tribe Batophoreae." Facies 59: 207–220.##
Granier, B., Dias-Brito, D., Bucur, I.I., 2013. A new mid-Cretaceous Neomeris (dasycladacean alga) from the Potiguar Basin, Brazil. Facies, 59: 221–230.##
Granier, B., Toland, C., Gèze, R., Azar, D., Maksou