Paläontologische Zeitschrift

, 69:321 | Cite as

New radiolarians from the earliest Cretaceous of the Sultanate of Oman (Wahrah Formation, Jebel Buwaydah)

  • Wolfgang Kiessling


In a section from the central Oman Mountains (Wahrah Formation, Jebel Buwaydah) well preserved radiolarians were extracted. Stratigraphically they represent typical earliest Cretaceous species (Bernasian). Besides well known Tethyan species allowing an exact age determination, unknown morphotypes are common in some samples. Some of these represent new species, which are described herein. The composition and diversity of the faunas hints to a depositional environment in the lower bathyal.


Oman Early Cretaceous Berriasian Tithonian Radiolaria 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.


In einem Profil aus den zentralen Oman-Bergen (Wahrah Formation, Jebel Buwaydah) wurden gut erhaltene Radiolarien geborgen, die stratigraphisch in die unterste Kreide (Berriasien) einzuordnen sind. Neben gut bekannten, typisch tethyalen Arten, die eine genaue Datierung zulassen, treten in einigen Proben auch bisher unbekannte Morphotypen auf. Einige dieser Morphotypen repräsentieren sicher neue Arten, die hier beschrieben werden. Die Zusammensetzung und Diversität der Faunen spricht für einen Ablagerungsbereich im tieferen Bathyal.


  1. Baumgartner, P. O. 1984. A Middle Jurassic-Early Cretaceous low-latitude radiolarian zonation based on Unitary Associations and age of Tethyan radiolarites. - Eclogae Geologicae Helvetiae77: 729–37, Basel.Google Scholar
  2. — 1987. Age and genesis of Tethyan Jurassic Radiolarites. - Eclogae Geologicae Helvetiae80: 831–879, Basel.Google Scholar
  3. Béchennec, F.; Beurrier, M.; Rabu, D. & Hutin, G. 1986. Geological map of Bahla-sheet NF 40 - 7A, scale 1:100,000: Explanatory notes. -1–44, Orléans.Google Scholar
  4. Béchennec, F.; Le Métour, J.;Rabu, D.;Villey, M. &Beurrier, M. 1988. The Hawasina Basin: a fragment of a starved passive continental margin, thrust over the Arabian Platform during the obduction of the Samail Nappe. - Tectonophysics151: 323–343, Amsterdam.CrossRefGoogle Scholar
  5. Bernoulli, D. &Weissert, H. 1987. The upper Hawasina nappes in the Central Oman Mountains: Stratigraphy, palinspastics and nappe emplacement. - Geodynamica Acta1: 47–58, Paris.Google Scholar
  6. Blome, C. D. &Irwin, W. P. 1985. Equivalent radiolarian ages from ophiolitic terranes of Cyprus and Oman. -Geology13: 401–404, Boulder.CrossRefGoogle Scholar
  7. Carter, E.S.;Cameron, B.E.B. &Smith, P.L. 1988. Lower and Middle Jurassic radiolarian biostratigraphy and systematic paleontology, Queen Charlotte Islands, British Columbia. - Bulletin Geological Survey of Canada386: 1–109, Ottawa.Google Scholar
  8. Cooper, D. J. W. 1987. Hamrat Duru Group: revised stratigraphy of a Mesozoic deep-water passive margin in the Oman Mountains.- Geological Magazine124: 157–164, Cambridge.Google Scholar
  9. — 1990. Sedimentary evolution and palaeogeographical reconstruction of the Mesozoic continental rise in Oman: evidence from the Hamrat Duru Group. - [In:]Robertson, A.H.F.;Searle, M.P. &Ries, A. C. (eds.): The Geology and Tectonics of the Oman Region. - Geological Society Special Publication49: 161–187, London.Google Scholar
  10. Davis, A. G. 1950. The Radiolaria of the Hawasina series of Oman. - Proceedings of the Geological Association61: 206–217, Colchester.CrossRefGoogle Scholar
  11. De Wever, P. 1981. Hagiastridae, Patulibracchiidae et Spongodiscidae (radiolaires polycystines) du Lias de Turquie. -Revue de Micropaléontologie24: 27–50, Paris.Google Scholar
  12. - 1989. Radiolarians, radiolarites, and Mesozoic paleogeography of the circum-Mediterranean Alpine Belts. - [In:]Hein, J.R. & Obradovic, J. (eds.): Siliceous Deposits of the Tethys and Pacific Regions: 31–49, New York.Google Scholar
  13. De Wever, P.;Bourdillon-de Grissac, Ch. &Béchennec, F. 1990. Permian to Cretaceous radiolarian biostratigraphic data from the Hawasina Complex, Oman Mountains. - [In:]Robertson, A. H. F.;Searle, M. P. &Ries, A. C. (eds.): The Geology and Tectonics of the Oman Region. - Geological Society Special Publication49: 225–238, London.Google Scholar
  14. De Wever, P.;Bourdillon-De Grissac, C. &Beurrier, M. 1988. Radiolaires sénoniens de la nappe de Samail (Oman). - Revue de Micropaléontologie31: 176–179, Paris.Google Scholar
  15. De Wever, P. &Riedel, W. 1979. EURORAD 1978: Recherches actuelles sur les Radiolaires en Europe. -Annales de la Société Géologique du Nord98: 205–222, Lille.Google Scholar
  16. Dyer, R. & Copestake, P. 1989. A review of Late Jurassic to earliest Cretaceous radiolaria and their biostratigraphic potential to petroleum exploration in the North Sea. - [In:]Batten, D.J. & Keen, M. C. (eds.): Northwest European Micropalaeontology: 214–235, Chichester (Ellis Horwood). Foreman, H. 1973. Radiolaria from DSDP Leg 20. - Initial Reports of the Deep Sea Drilling Project 20: 249–305, Washington.Google Scholar
  17. Glennie, K. W.;Boeuf, M. G. A.;Hughes Clarke, M. W.;Moody-Stuart, M.;Pilaar, W. F. H. &Reinhardt, B. M. 1974. Geology of the Oman Mountains. - Verhandelingen van het Koninklijk Nederlands geologisch mijnbouwkundig Genootschap31: 1–423, Delft.Google Scholar
  18. Goričan, Š. 1994. Jurassic and Cretaceous radiolarian biostratigraphy and sedimentary evolution of the Budva Zone (Dinarides, Montenegro). - Mémoires de Géologie (Lausanne)18: 1–177, Lausanne.Google Scholar
  19. Haeckel, E. 1881. Entwurf eines Radiolarien-Systems auf Grand von Studien der Challenger-Radiolarien. - Jenaische Zeitschrift für Naturwissenschaften15: 418–472, Jena.Google Scholar
  20. ICZN [International Code of Zoological Nomenclature] 1985. Adopted by the 20th General Assembly of the International Union of Biological Sciences. 338 p.Google Scholar
  21. Jud, R. 1994. Biochronology and Systematics of Early Cretaceous Radiolaria of the Western Tethys. - Mémoires de Géologie (Lausanne)19: 1–147, Lausanne.Google Scholar
  22. Kato, Y. &Iwata, K. 1989. Radiolarian biostratigraphic study of the pre-Tertiary system around the Kamikawa Basin, Central Hokkaido, Japan. - Journal of the Faculty of Science, Hokkaido University, (4)22: 425–452, Sapporo.Google Scholar
  23. Minoux, L. & Janjou, D. 1986. Geological map of ’Ibri - sheet NF 40-2F, scale 1:100,000: Explanatory notes. - 1–53, Orléans.Google Scholar
  24. Misík, M.;Jablonsky, J.;Ozvoldová, L. &Halásová, E. 1991. Distal turbidites with pyroclastic material in Malmian radiolarites of the Pieniny Klippen Belt (Western Carpathians). - Geologica Carpathica42: 341–360, Bratislava.Google Scholar
  25. Parona, C.F. 1890. Radiolarie nei noduli selciosi del calcare giurese du Cittiglio presso Laveno. - Bollettino délia Società geologica Italiana9: 132–175, Rome.Google Scholar
  26. Pessagno, E. A. 1972. Cretaceous Radiolaria. Part I: The Phaseliformidae, new family, and other Spongo- discacea from the Upper Cretaceous portion of the Great Valley Sequence. Part II: Pseudo- aulophacidae Riedel from the Cretaceous of California and the Blake-Bahama Basin (Joides LEG 1). - Bulletins of American Paleontology61/270: 269–314, New York.Google Scholar
  27. — 1976. Radiolarian zonation and stratigraphy of the Upper Cretaceous portion of the Great Valley Sequence, California Coast Ranges. - Micropaleontology, Special Publication2: 1–95, New York.Google Scholar
  28. — 1977. Upper Jurassic Radiolaria and radiolarian biostratigraphy of the California Coast Ranges. -Micropaleontology23: 56–113, New York.CrossRefGoogle Scholar
  29. Pessagno, E. A. & Blome, C. D. 1986. Faunal affinities and tectonogenesis of Mesozoic rocks in the Blue Mountain Province of eastern Oregon and western Idaho. - [In:] Geology of the Blue Mountains region of Oregon, Idaho and Washington. - U.S. Geological Survey Professional Papers1435: 65- 78, Washington.Google Scholar
  30. Pessagno, E. A.;Blome, C. D.;Hull, D. M. &Six, W. M. 1993. Jurassic radiolaria from the Josephine ophiolite and overlying strata, Smith River subterrane (Klamath Mountains), northwestern Cali- fornia and southwestern Oregon. - Micropaleontology39: 93–166, New York.CrossRefGoogle Scholar
  31. Pessagno, E. A.;Longoria, J. E.;Macleod, N. &Six, W. M. 1987. Studies of North American Jurassic Radiolaria; Part I, Upper Jurassic (Kimmeridgian-upper Tithonian) Pantanelliidae from the Taman Formation, east-central Mexico: Tectonostratigraphic, chronostratigraphic, and phylogenetic im- plications. - Cushman Foundation for Foraminiferal Research, Special Publication23: 1–51, Washington.Google Scholar
  32. Pessagno, E. A. &Newport, R. L. 1972. A technique for extracting Radiolaria from radiolarian cherts. -Micropaleontology18: 231–234, New York.CrossRefGoogle Scholar
  33. Riedel, W. R. &Sanfilippo, A. 1974. Radiolaria from the southern Indian Ocean, DSDP Leg 26. - Initial Reports of the Deep Sea Drilling Project26: 771–814, Washington.Google Scholar
  34. Robertson, A. H. F. &Searle, M. P. 1990. The northern Oman Tethyan continental margin: stratigraphy, structure, concepts and controversies. - [In:]Robertson, A.H.F.;Searle, M.P. &Ries, A. C. (eds.): The Geology and Tectonics of the Oman Region. - Geological Society Special Publication49: 3–5, London.Google Scholar
  35. Roth, P. H. 1986. Mesozoic paleoceanography of the North Atlantic and Tethys Oceans. - [In:]Summerhayes, C. P. &Shackleton, N. J. (eds.): North Atlantic Palaeoceanography. - Geological Society Special Publication21: 299–320, London.Google Scholar
  36. Schaaf, A. 1981. Late Early Cretaceous Radiolaria from Deep Sea Drilling Project Leg 62. - Initial Reports of the Deep Sea Drilling Project62: 419–470, Washington.Google Scholar
  37. Schaaf, A. &Thomas, V. 1986. Les radiolaires campaniens de Wadi Ragmi (nappe de Semail, Oman); un nouveau repère chronologique de l’obduction omanaise. - Comptes rendus de l’Académie des Sciences, (II)303: 1593–1598, Paris.Google Scholar
  38. Steiger, T. 1992. Systematik, Stratigraphie und Palökologie der Radiolarien des Oberjura-Unterkreide- Grenzbereiches im Osterhorn-Tirolikum (Nördliche Kalkalpen, Salzburg und Bayern). - Zitteliana19: 1–188, München.Google Scholar
  39. Takahashi, K. 1991. Radiolaria: Flux, ecology, and taxonomy in the Pacific and Atlantic. - Ocean Biocoenosis Series3: 1–303, Massachusetts.Google Scholar
  40. Takahashi, K. &Honjo, S. 1981. Vertical flux of Radiolaria: A taxon-quantitative sediment trap study from the western tropical Atlantic. - Micropaleontology27: 140–190, New York.CrossRefGoogle Scholar
  41. Thurow, J. 1988. Cretaceous Radiolarians of the North Atlantic Ocean: ODP Leg 103 (Sites 638, 640, and 641) and DSDP Legs 93 (Site 603) and 47b (Site 398). - Proceedings of the Ocean Drilling Program, Scientific Results103: 379–418, Washington.Google Scholar
  42. Tippit, P. R. 1981. The biostratigraphy and taxonomy of Mesozoic radiolaria from the Samail ophiolite and Hawasina complex (Oman). - 396 pp., unpublished Ph. D. thesis, University of Texas at Dallas.Google Scholar
  43. Tippit, P. R.;Pessagno, E. A. Jr. &Smewing, J. D. 1981. The biostratigraphy of sediments in the volcanic unit of the Samail Ophiolite. - Journal of Geophysical Research86: 2756–2762, Washington.CrossRefGoogle Scholar
  44. Winterer, E. L. &Bosellini, A. 1981. Subsidence and Sedimentation on Jurassic Passive Continental Margin, Southern Alps, Italy. - Bulletin of the American Association of Petroleum Geologists65: 394–421, Tulsa.Google Scholar
  45. Wu, H.-R. &Li, H.-S. 1982. Radiolaria from the olistostrome of the Zongzhuo Formation, Gyangze, Southern Xizang (Tibet). - Acta Palaeontologica Sinica21: 64–72, Bejing.Google Scholar
  46. Yang, Q. 1993. Taxonomic studies of Upper Jurassic (Tithonian) Radiolaria from the Taman Formation, east-central Mexico. -Palaeoworld [special issue]3: 1–164, Nanjing.Google Scholar

Copyright information

© E. Schweizerbart’sche Verlagsbuchhandlung 1995

Authors and Affiliations

  • Wolfgang Kiessling
    • 1
  1. 1.Institut für PaläontologieErlangen

Personalised recommendations