1. bookVolume 70 (2021): Issue 2 (December 2021)
Journal Details
First Published
14 Jul 2011
Publication timeframe
3 times per year
access type Open Access

Reconstruction of the last cretaceous anoxic event in the Tarfaya Laayoune basin (South of Morocco): Biostratigraphy and Paleoenvironment of the Oum Debaa Formation

Published Online: 30 Dec 2021
Page range: 97 - 123
Journal Details
First Published
14 Jul 2011
Publication timeframe
3 times per year

The Tarfaya-Laayoune coastal basin developed in a stable passive margin, where sedimentation occurred in shallow bays. During the Late Cretaceous, bituminous and phosphatic series were deposited in the shallow depression such as Sebkha Oum Debaa. In this work, the age of these Cretaceous layers are refined using a palynological approach and their paleoenvironments are described using organic geochemistry. Based on quantitative and qualitative palynological analyses, the sediments revealed a rich and diverse dinoflagellate cyst assemblage (65 taxa); among them 9 important biostratigraphic markers: Andalusiella inflata, Andalusiella ivoirensis, Andalusiella mauthei, Cerodinium diebelii, Cerodinium speciosum, Dinogymnium acuminatum, Odontochitina porifera, Trichodinium castanea, and Trithyrodinium evittii. According to the reported stratigraphic dinoflagellate taxa distribution, an age range of late Campanian to early Maastrichtian is herein proposed for the Oum Debaa Formation. This biostratigraphy update has been correlated to the Tethyan and Sub-Boreal domains. On the paleoenvironmental level, geochemical proxies have displayed an anoxic lagoon depositional which is dominated by an intermediate climate between hot / humid and arid with an often low paleoproductivity regime which induces redox conditions.


Abioui M., Ferry S., Grosheny D., Içame N., Robert E. & Benssaou M. (2019): The Cretaceous marine onlap on Palaeozoic deposits (Smara–Lâayoune Basin, South Morocco). Comparison with neighbouring regions. Comptes Rendus. – Geoscience 351(7): 498-507.10.1016/j.crte.2019.09.003 Search in Google Scholar

Albani A., Kuhnt W., Luderer F., Herbin J.P. & Caron M. (1999): Palaeoenvironmental evolution of the Late Cretaceous sequence in the Tarfaya Basin (southwest of Morocco). – Geological Society Special Publication 153(1): 223-240.10.1144/GSL.SP.1999.153.01.14 Search in Google Scholar

Ali S., Stattegger K., Liu Z., Khélifi N. & Kuhnt W. (2019): Paleoclimatic and paleoenvironmental reconstruction at Tarfaya Atlantic coastal basin (Morocco) based on clay mineral records from Upper Cretaceous to Quaternary. – Arabian Journal of Geosciences 12(1): 1-12.10.1007/s12517-018-4156-4 Search in Google Scholar

Almogi-Labin A., Bein A. & Sass E. (1993): Late Cretaceous upwelling system along the Southern Tethys Margin (Israel): Interrelationship between productivity, bottom water environments, and organic matter preservation. – Paleoceanography 8(5): 671-690.10.1029/93PA02197 Search in Google Scholar

Antonescu E., Foucher J.C. & Odin G.S. (2001): Chapitre C2c Les kystes de dinoflagellés de la carrière de tercis les bains (Landes, France). – Developments in Palaeontology and Stratigraphy 19(C): 235-252.10.1016/S0920-5446(01)80026-1 Search in Google Scholar

Antonescu E., Foucher J.C., Odin G.S., Schiøler P., Siegl-Farkas A. & Wilson G.J. (2001): Chapter C2d Dinoflagellate cysts in the Campanian-Maastrichtian succession of Tercis les Bains (Landes, France), a synthesis. – Developments in Palaeontology and Stratigraphy 19(C): 253-264.10.1016/S0920-5446(01)80027-3 Search in Google Scholar

Aquit M., Kuhnt W., Holbourn A., Chellai E., Stattegger K., Kluth O. & Jabour H. (2013): Late cretaceous paleoenvironmental evolution of the tarfaya atlantic coastal basin, SW morocco. – Cretaceous Research 45: 288-305.10.1016/j.cretres.2013.05.004 Search in Google Scholar

Aquit M., Kuhnt W., Holbourn A., Chellai E.H., Lees J.A., Kluth O. & Jabour H. (2017): Complete archive of late Turonian to early Campanian sedimentary deposition in newly drilled cores from the Tarfaya Basin, SW Morocco. – Bulletin of the Geological Society of America 129(1-2): 137-151.10.1130/B31523.1 Search in Google Scholar

Arthur M.A. & Natland J.H. (2011): Carbonaceous sediments in the North and South Atlantic: The role of salinity in stable stratification of early Cretaceous basins (pp. 375-401), American Geophysical Union (AGU).10.1029/ME003p0375 Search in Google Scholar

Aurisano R.W. (1989): Upper cretaceous dinoflagellate biostratigraphy of the subsurface Atlantic coastal plain of New Jersey and Delaware, U.S.A. – Palynology 13(1): 143-179.10.1080/01916122.1989.9989359 Search in Google Scholar

El Ayyat A.M. (2015): Lithostratigraphy, sedimentology, and cyclicity of the Duwi Formation (late Cretaceous) at Abu Tartur plateau, Western Desert of Egypt: evidences for reworking and redeposition. – Arabian Journal of Geosciences 8(1): 99-124.10.1007/s12517-013-1169-x Search in Google Scholar

Begouën V., Masure E., Bellier J.P. & Debroas E.J. (1990): Premier inventaire des kystes de dinoflagellés des flyschs néocrétacés de la zone sous-pyrénéenne (France): biostratigraphie comparée et. – Comptes rendus de l’Académie des sciences 311(11): 1383-1389. Search in Google Scholar

El Beialy S.Y. (1995): Campanian-Maastrichtian palynomorphs from the Duwi (Phosphate) Formation of the Hamrawein and Umm El Hueitat mines, Red Sea Coast, Egypt. – Review of Palaeobotany and Palynology 85(3-4): 303-317.10.1016/0034-6667(94)00121-Y Search in Google Scholar

El Beialy S.Y., El Atfy H.S., Zavada M.S., El Khoriby E.M. & Abu-Zied R.H. (2010): Palynological, alynofacies, paleoenvironmental and organic geochemical studies on the Upper Cretaceous succession of the GPTSW-7 well, North Western Desert, Egypt. – Marine and Petroleum Geology 27(2): 370-385.10.1016/j.marpetgeo.2009.10.006 Search in Google Scholar

Beil S., Kuhnt W., Holbourn A.E., Aquit M., Flögel S., Chellai E.H. & Jabour H. (2018): New insights into Cenomanian paleoceanography and climate evolution from the Tarfaya Basin, southern Morocco. – Cretaceous Research 84: 451-473.10.1016/j.cretres.2017.11.006 Search in Google Scholar

Beilstein U. (1994): Mikrofloren (Sporomorphen, Dinophyceen) aus der regressiven Oberkreide des BenueTroges, Nigeria. Geologisches Institut der Universität zu Köln. Search in Google Scholar

Benalioulhaj N. (1991): Les formations a phosphates et a schistes bitumineux du bassin des oulad-abdoun et du bassin de timahdit; petrographie, mineralogie, geochimie et environnement de depot. Université Louis Pasteur (Strasbourg). Search in Google Scholar

Benalioulhaj S. & Trichet J. (1990): Comparative study by infrared spectroscopy of the organic matter of phosphate-rich (Oulad Abdoun basin) and black shale (Timahdit basin) series (Morocco). – Organic Geochemistry 16(4-6): 649-660.10.1016/0146-6380(90)90107-B Search in Google Scholar

Benammi M., Adnet S., Marivaux L., Yans J., Noiret C., Tabuce R. & Surault J. (2019): Geology, biostratigraphy and carbon isotope chemostratigraphy of the Palaeogene fossil-bearing Dakhla sections, southwestern Moroccan Sahara. Geological Magazine. Cambridge University Press. Search in Google Scholar

Blakey R.C. (2008): Gondwana paleogeography from assembly to breakup - A 500 m.y. odyssey. – Special Paper of the Geological Society of America 441: 1-28.10.1130/2008.2441(01) Search in Google Scholar

Boltenhagen E. (1977): Microplancton du Crétacé supérieur du Gabon. (Éditions du Centre national de la recherche scientifique, Ed.). Cah. Paléontol. Search in Google Scholar

Brebion P. & Ortlieb L. (1976): Nouvelles recherches géologiques et malacologiques sur le Quaternaire de la province de Tarfaya (Maroc méridional). – Geobios 9(5): 529-549.10.1016/S0016-6995(76)80023-X Search in Google Scholar

Brinkhuis H. (1994): Late Eocene to Early Oligocene dinoflagellate cysts from the Priabonian type-area (Northeast Italy): biostratigraphy and paleoenvironmental interpretation. – Palaeogeography, Palaeo-climatology, Palaeoecology 107(1-2): 121-163.10.1016/0031-0182(94)90168-6 Search in Google Scholar

Brinkhuis H., Bujak J.P., Smit J., Versteegh G.J.M. & Visscher H. (1998): Dinoflagellate-based sea surface temperature reconstructions across the Cretaceous-Tertiary boundary. – Palaeogeography, Palaeo-climatology, Palaeoecology 141(1-2): 67-83.10.1016/S0031-0182(98)00004-2 Search in Google Scholar

Brinkhuis H., Sengers S., Sluijs A., Warnaar J. & Williams G. (2003): Latest Cretaceous to earliest Oligocene, and Quaternary dinoflagellate cysts from ODP Site 1172, East Tasman Plateau. – Proceedings of the ocean drilling program (pp. 1-48), Scientific results.10.2973/odp.proc.sr.189.106.2003 Search in Google Scholar

Bujak J.P. (1984): Cenozoic dinoflagellate cysts and acritarchs from the Bering Sea and northern North Pacific, DSDP Leg 19. – Micropaleontology 30(2): 180-212.10.2307/1485717 Search in Google Scholar

Bujak J.P. & Williams G.L. (1985): Mesozoic and Cenozoic dinoflagellates. Plankton Stratigraphy (pp. 847-965). Search in Google Scholar

Calvert S.E. & Pedersen T.F. (2007): Chapter Fourteen Elemental Proxies for Palaeoclimatic and Palaeoceanographic Variability in Marine Sediments: Interpretation and Application: Developments in Marine Geology, v. 1, pp. 567-644. Search in Google Scholar

Choubert G. (1946): Géologie-Sur L’age Des Regs Quaternaires du Sud marocain et de l’apparition de Labbevillien au Maroc. Comptes Rendus Hebdomadaires Des Sciences De L’Academie Des Sciences 223(22): 911-912. Search in Google Scholar

Choubert G., Faure-Muret A. & Hottinger L. (1966): Apercu geologique du bassin cotier de Tarfaya. (Service Géologique du Maroc, Ed.). Search in Google Scholar

Einsele G. & Von Rad U. (1979): Facies and paleoenvironment of Lower Cretaceous sediments at DSDP Site 397 and in the Aaiun Basin (Northwest Africa). – Initial Rep. of the Deep Sea Drilling Project 47(1): 559-77. Search in Google Scholar

Einsele G. & Wiedmann J. (1982): Turonian black shales in the Moroccan coastal basins: first upwelling in the Atlantic Ocean? Geology of the northwest African continental margin, pp. 396-414. Search in Google Scholar

El-Shafeiy M., Birgel D., El-Kammar A., El-Barkooky A., Wagreich M., Mohamed O. & Peckmann J. (2014): Palaeoecological and post-depositional changes recorded in Campanian-Maastrichtian black shales, Abu Tartur plateau, Egypt. – Cretaceous Research 50: 38-51.10.1016/j.cretres.2014.03.022 Search in Google Scholar

El-Shafeiy M., Birgel D., El-Kammar A., El-Barkooky A., Wagreich M., Tahoun S. & Peckmann, J. (2017): Integrated palaeo-environmental proxies of the Campanian to Danian organic-rich Quseir section, Egypt. – Marine and Petroleum Geology 86: 771-786.10.1016/j.marpetgeo.2017.06.025 Search in Google Scholar

Ela N.M.A., Tahoun S.S. & Raafat A. (2019): The Cretaceous (Barremian-Maastrichtian) palynostratigraphy and palynofacies of the Drazia-1 well, North Egypt. Search in Google Scholar

Eshet Y., Almogi-Labin A. & Bein A. (1994): Dinoflagellate cysts, paleoproductivity and upwelling systems: A Late Cretaceous example from Israel. – Marine Micropaleontology 23(3): 231-240.10.1016/0377-8398(94)90014-0 Search in Google Scholar

Fabre S., Lézin C. & Lebedel V. (2018): Paleoceanographic significance of cerium anomalies during the oae 2 on the NW African margin. – Journal of Sedimentary Research 88(11): 1284-1299.10.2110/jsr.2018.66 Search in Google Scholar

Fensome R.A. & Williams G.L. (2004): The Lentin and Williams index of fossil dinoflagellates. Search in Google Scholar

Firth J.V. (1987): Dinoflagellate biostratigraphy of the maastrichtian to danian interval in the U.S. Geological survey Albany core, Georgia, U.S.A. – Palynology 11(1): 199-216. Search in Google Scholar

Föllmi K.B. (2012): Early Cretaceous life, climate and anoxia: Cretaceous Research, v. 35, pp. 230-257. Search in Google Scholar

François R. (1988): A study on the regulation of the concentrations of some trace metals (Rb, Sr, Zn, Pb, Cu, V, Cr, Ni, Mn and Mo) in Saanich Inlet Sediments, British Columbia, Canada: Marine Geology, v. 83, pp. 285-308.10.1016/0025-3227(88)90063-1 Search in Google Scholar

Garzon S. Warny S. & Bart P.J. (2012): A palynological and sequence-stratigraphic study of Santonian-Maastrichtian strata from the Upper Magdalena Valley basin in central Colombia. – Palynology 36(suppl. 1): 112-133.10.1080/01916122.2012.675147 Search in Google Scholar

Ghassal B.I., Littke R., Sachse V., Sindern S. & Schwarzbauer J. (2016): Depositional environment and source rock potential of Cenomanian and Turonian sedimentary rocks of the Tarfaya Basin, Southwest Morocco. – Geologica Acta 14(4): 419-441. Search in Google Scholar

Goudie A. (2013): Arid and Semi-Arid Geomorphology. Cambridge University Press.10.1017/CBO9780511794261 Search in Google Scholar

Habib D., Olsson R.K., Liu C. & Moshkovitz S. (1996): High-resolution biostratigraphy of sea-level low, biotic extinction, and chaotic sedimentation at the Cretaceous-Tertiary boundary in Alabama, north of the Chicxulub. – Geological Society of America Special Paper 307: 243-252.10.1130/0-8137-2307-8.243 Search in Google Scholar

Hartwig A., di Primio R., Anka Z. & Horsfield B. (2012): Source rock characteristics and compositional kinetic models of Cretaceous organic rich black shales offshore southwestern Africa. – Organic Geochemistry 51: 17-34.10.1016/j.orggeochem.2012.07.008 Search in Google Scholar

Harwood R.J. (1977): Oil and Gas Generation by Laboratory Pyrolysis of Kerogen. AAPG Bulletin 61(12): 20822102. Search in Google Scholar

Le Heron D.P., Khoukhi Y., Paris F., Ghienne J.F. & Le Herissé A. (2008): Black shale, grey shale, fossils and glaciers: Anatomy of the Upper Ordovician-Silurian succession in the Tazzeka Massif of eastern Morocco. – Gondwana Research 14(3): 483-496.10.1016/j.gr.2008.02.006 Search in Google Scholar

Ionnides N.S. (1986): Dinoflagellate cysts from Upper Cretaceous-Lower Tertiary sections, Bylot and Devon Islands. Arctic Archipelago. – Bull. Geol. Surv. Can 371: 1-99. Search in Google Scholar

Keller G., Adatte T., Berner Z., Chellai E.H. & Stueben D. (2008): Oceanic events and biotic effects of the Cenomanian-Turonian anoxic event, Tarfaya Basin, Morocco. – Cretaceous Research 29(5-6): 976-994.10.1016/j.cretres.2008.05.020 Search in Google Scholar

Kirsch K. (1991): Dinoflagellatenzysten aus der Oberkreide des Helvetikums und Nordultrahelvetikums von Oberbayern. – Geowissenschaftliche Abhandlungen, Reihe A. Geol. Paläontol 22: 1-306. Search in Google Scholar

Kjellström G. (1973): Maastrichtian microplankton from the Höllviken Borehole No.1 in Scania, southern Sweden. Sveriges Geologiska Undersökning, Serie C, 67(8): 1-59. Search in Google Scholar

Kolonic S., Sinninghe J.S., Bottcher M.E., Kuypers M.M.M., Kuhnt W., Beckmann B., Scheeder G., et al. (2002): Geochemical Characterization Of Cenomanian/Turonian Black Shales From The Tarfaya Basin (Sw Morocco). Relationships Between Palaeoenvironmental Conditions And Early Sulphurization Of Sedimentary Organic Matter. – Journal of Petroleum Geology 25(3): 325-350. Search in Google Scholar

Kuhnt W., Chellai E.H., Holbourn A., Luderer F., Thurow J., Wagner T., Albani A.E., et al. (2001): Morocco Basin’s sedimentary record may provide correlations for Cretaceous paleoceanographic events worldwide. – Eos, Transactions American Geophysical Union 82(33): 361-361.10.1029/01EO00223 Search in Google Scholar

Kuhnt W., Luderer F., Nederbragt S., Thurow J. & Wagner T. (2005): Orbital-scale record of the late Cenomanian-Turonian oceanic anoxic event (OAE-2) in the Tarfaya Basin (Morocco). – International Journal of Earth Sciences 94(1): 147-159.10.1007/s00531-004-0440-5 Search in Google Scholar

Kuhnt W. & Moullade M. (1991): Quantitative analysis of Upper cretaceous abyssal agglutinated foraminiferal distribution in the North Atlantic : Paleoceanographjic implications. – Revue de Micro-paléontologie 34(4): 313-349. Search in Google Scholar

Kurita H. & McIntyre D.J. (1995): Paleocene dinoflagellates from the turtle mountain formation, southwestern Manitoba, Canada. – Palynology 19(1): 119-136.10.1080/01916122.1995.9989455 Search in Google Scholar

Landman N.H., Johnson R.O. & Edwards L.E. (2004): Cephalopods from the Cretaceous/Tertiary boundary interval on the Atlantic Coastal Plain, with a description of the highest ammonite zones in North America. Part 2. – Bulletin of the American Museum of Natural History 287: 1-107.10.1206/0003-0090(2004)287<0001:CFTTBI>2.0.CO;2 Search in Google Scholar

Lebedel V., Lézin C., Andreu B., Ettachfini E.M., & Grosheny D. (2015) : The upper Cenomanian-lower Turonian of the Preafrican Trough (Morocco): Platform configuration and palaeoenvironmental conditions. – Journal of African Earth Sciences 106: 1-16.10.1016/j.jafrearsci.2015.03.001 Search in Google Scholar

Lebedel V., Lezin C., Andreu B., Wallez M.J., Ettachfini E.M. & Riquier L. (2013): Geochemical and palaeoecological record of the Cenomanian–Turonian Anoxic Event in the carbonate platform of the Preafrican Trough, Morocco. – Palaeogeography, Palaeoclimatology, Palaeoecology 369: 79-98.10.1016/j.palaeo.2012.10.005 Search in Google Scholar

Lecointre G. (1949): Sur le Quaternaire des environs de Casablanca. – Bulletin de la Société Géologique de France 5(7-9): 585-594.10.2113/gssgfbull.S5-XIX.7-9.585 Search in Google Scholar

Lentin J.K. (1993): Fossil dinoflagellates: index to genera and species 1993 edition. – Amer. Assoc. Stratigraphic Palynologists, Contribution Series 28. Retrieved May 2, 2020 (https://ci.nii.ac.jp/naid/10009322336) Search in Google Scholar

Lentin J.K. & Williams G.L. (1985): Fossil dinoflagellates: index to genera and species, 1985 edition. Canadian Technical Report of Hydrography and Ocean Sciences, no.60. Search in Google Scholar

Lewis J., Dodge J. & Powell A. (1990): 18. Quaternary dinoflagellate cysts from the upwelling system offshore Peru, Hole 686b, odp leg 1121. – Proceedings of the Ocean Drilling Program, scientific results (Vol. 112, pp. 323-328).10.2973/odp.proc.sr.112.162.1990 Search in Google Scholar

Lindner A. & Querol R. (1971): Mapa geologico del Sahara español 1: 200 000. (M. Instituto Geologico y Minero de España, Ed.). Search in Google Scholar

Littler K., Robinson S.A., Bown P.R., Nederbragt A.J., and Pancost R.D. (2011): High sea-surface temperatures during the Early Cretaceous Epoch: Nature Geoscience, v. 4, pp. 169-172. Search in Google Scholar

Lüning S., Kolonic S., Belhadj E.M., Belhadj Z., Cota L., Barić G. & Wagner T. (2004): Integrated depositional model for the Cenomanian-Turonian organic-rich strata in North Africa. – Earth-Science Reviews 64(1-2): 51-117.10.1016/S0012-8252(03)00039-4 Search in Google Scholar

Marheinecke U. (1992): Monographie der dinocysten, acritarcha und chlorophyta des Maastrichtium von Hemmoor (Niedersachsen). – Palaeontographica Abteilung B 227: 1-173. Search in Google Scholar

Masure E. (1985): Kystes de dinoflagellés. Le Campanien stratotypique: étude lithologique et micro-paléontologique. – Géologie Méditerranéenne 10(3-4): 41-57. Search in Google Scholar

Masure E., Rauscher R., Dejax J., Schuler M. & Ferre B. (1998): Cretaceous-Paleocene palynology from the Côte d’Ivoire-Ghana transform margin, sites 959-962. – Proceedings of the Ocean Drilling Program (pp. 253-276).10.2973/odp.proc.sr.159.040.1998 Search in Google Scholar

Masure E. & Tea J. (1996): The dinoflagellate Andalusiella: emendation of the genus, revision of species, A. ivoirensis Masure, Tea and Yao, sp. nov. – Review of Palaeobotany and Palynology 91(1-4): 171-186.10.1016/0034-6667(95)00061-5 Search in Google Scholar

May F. (1980): Dinoflagellate cysts of the Gymnodiniaceae, Peridiniaceae, and Gonyaulacaceae from the Upper Cretaceous Monmouth Group, Atlantic Highlands. – Palaeontogr. B: 10-116. Search in Google Scholar

McIntyre D.J. (1999): Campanian to Paleocene dinoflagellate assemblages from the Turtle Mountain core hole, Manitoba, western Canada. – Canadian Journal of Earth Sciences 36(5): 769-774.10.1139/e98-011 Search in Google Scholar

Meinhold G., Howard J.P., Strogen D., Kaye M.D., Abutarruma Y., Elgadry M., Thusu B., et al. (2013): Hydrocarbon source rock potential and elemental composition of lower Silurian subsurface shales of the eastern Murzuq Basin, southern Libya. – Marine and Petroleum Geology 48: 224-246.10.1016/j.marpetgeo.2013.08.010 Search in Google Scholar

Meister C., Piuz A., Cavin L., Boudad L., Bacchia F., Ettachfini E.M. & Benyoucef M. (2017): Late Cretaceous (Cenomanian-Turonian) ammonites from southern Morocco and south western Algeria. – Arabian Journal of Geosciences 10(1): 1-46.10.1007/s12517-016-2714-1 Search in Google Scholar

Motzer W.E., (2016): Chemistry, geochemistry, and geology of chromium and chromium compounds, in Chromium (VI) Handbook: CRC Press, pp. 23-91. Search in Google Scholar

Myers K.J., & Wignall P.B., (1987): Understanding Jurassic Organic-rich Mudrocks—New Concepts using Gamma-ray Spectrometry and Palaeoecology: Examples from the Kimmeridge Clay of Dorset and the Jet Rock of Yorkshire, in Marine Clastic Sedimentology: Springer Netherlands, pp. 172-189. https://link.springer.com/chapter/10.1007/978-94-009-3241-8_9. Checked September 2020. Search in Google Scholar

Nøhr-Hansen H. (1996): Upper Cretaceous dinoflagellate cyst stratigraphy, onshore West Greenland. – Grønlands Geologiske Undersøgelse Bulletin 170: 104.10.34194/bullggu.v170.6730 Search in Google Scholar

Nøhr-Hansen H. (2012): Palynostratigraphy of the Cretaceous-lower Palaeogene sedimentary succession in the Kangerlussuaq Basin, southern East Greenland. – Review of Palaeobotany and Palynology 178: 59-90.10.1016/j.revpalbo.2012.03.009 Search in Google Scholar

Nguidi M.A., Mouflih M., Benbouziane A., Kocsis L., El Ouariti S., El Boukhari H., Aquit M., & Yazami O.K. (2021): Lithofacies analysis, sedimentary dynamics and genesis of Maastrichtian-Eocene phosphorites of BouCraa deposit (Southern Morocco): Journal of African Earth Sciences, v. 177, pp. 104-161. Search in Google Scholar

Nzoussi-Mbassani P., Khamli N., Disnar J.R., Laggoun-Défarge F. & Boussafir M. (2005): Cenomanian-Turonian organic sedimentation in North-West Africa: A comparison between the Tarfaya (Morocco) and Senegal Basins. – Sedimentary Geology 177(3-4): 271-295.10.1016/j.sedgeo.2005.03.008 Search in Google Scholar

Oboh-Ikuenobe F.E., Yepes O. & Gregg J.M. (1998): Palynostratigraphy, Palynofacies, and thermal maturation of Cretaceous – Paleocene sediments from The Côte D’ivoire-Ghana Transform Margin. In: Mascle M., Lohmann J. & Moullade G.P. [Ed.] Proceedings of the Ocean Drilling Program.10.2973/odp.proc.sr.159.016.1998 Search in Google Scholar

Pellicer R. (2016): Improvement of biostratigraphic and paleoenvironmental reconstruction tools based on cretaceous dinoflagellate cysts from the tethys and the atlantic: Paris VI, 262 p. https://tel.archives-ouvertes.fr/tel-01691423. Checked May 2020. Search in Google Scholar

Pirrie D., Crame J.A., Lomas S.A. & Riding J.B. (1997): Late Cretaceous stratigraphy of the Admiralty Sound region, James Ross Basin, Antarctica. – Cretaceous Research 18(1): 109-137.10.1006/cres.1996.0052 Search in Google Scholar

Pletsch T., Erbacher J., Holbourn A.E.L., Kuhnt W., Moullade M., Oboh-Ikuenobede F.E., Söding E., et al. (2001): Cretaceous separation of Africa and South America: The view from the West African margin (ODP Leg 159). – Journal of South American Earth Sciences 14(2): 147-174.10.1016/S0895-9811(01)00020-7 Search in Google Scholar

Powell A.J., Dodge J.D. & Lewis J. (1990): 17. Late Neogene To Pleistocene Palynological Facies Of The Peruvian Continental Margin Upwelling, Leg 1121. – Proceedings of the Ocean Drilling Project, Scientific Results, 112: 297-321. Search in Google Scholar

Prauss M.L. (2015): Marine palynology of the Oceanic Anoxic Event 3 (OAE3, Coniacian - Santonian) at Tarfaya, Morocco, NW Africa - transition from preservation to production controlled accumulation of marine organic carbon. – Cretaceous Research 53: 19-37.10.1016/j.cretres.2014.10.005 Search in Google Scholar

Premaor E., de Souza P.A., Arai M. & Helenes J. (2010): Palinomorfos do Campaniano (Cretáceo Superior) da Bacia de Pelotas, Rio Grande do Sul: Implicações bioestratigráficas e paleoambientais. – Pesquisas em Geociencias 37(1): 63-79.10.22456/1807-9806.17723 Search in Google Scholar

Price L.C., Pawlewicz M.J. & Daws T.A. (1999): Organic metamorphism in the California petroleum basins; Chapter A, Rock-Eval and vitrinite reflectance: https://pubs.er.usgs.gov/publication/b2174A. Checked May 2020. Search in Google Scholar

Rachidi M., Neuweiler F. & Kirkwood D. (2009): Diagenetic-Geochemical Patterns and Fluid Evolution History Of A Lower Jurassic Petroleum Source Rock, Middle Atlas, Morocco. – Journal of Petroleum Geology 32(2): 111-128.10.1111/j.1747-5457.2009.00439.x Search in Google Scholar

Racka M., Marynowski L., Filipiak P., Sobstel M., Pisarzowska A., & Bond D.P.G. (2010): Anoxic Annulata Events in the Late Famennian of the Holy Cross Mountains (Southern Poland): Geochemical and palaeontological record: Palaeogeography, Palaeoclimatology, Palaeoecology, v. 297, pp. 549-575. Search in Google Scholar

Radmacher W., Tyszka J., Mangerud G. & Pearce M.A. (2014): Dinoflagellate cyst biostratigraphy of the Upper Albian to Lower Maastrichtian in the southwestern Barents Sea. Marine and Petroleum Geology 57: 109-121.10.1016/j.marpetgeo.2014.04.008 Search in Google Scholar

Rakociński M., Zatoń M., Marynowski L., Gedl P., & Lehmann J. (2018): Redox conditions, productivity, and volcanic input during deposition of uppermost Jurassic and Lower Cretaceous organic-rich siltstones in Spitsbergen, Norway: Cretaceous Research, v. 89, pp. 126-147.10.1016/j.cretres.2018.02.014 Search in Google Scholar

Ratschiller L.K. (1970): Lithostratigraphy of the northern Spanish Sahara. Museo tridentino di scienze naturali. Search in Google Scholar

Rauscher R. & Doubinger J. (1981): Palynostratigraphic Results In The Phosphatic Maestrichtian Of Morocco. – Comptes Rendus De L’Academie Des Sciences 293(4): 321-324. Search in Google Scholar

Razmjooei M.J., Thibault N., Kani A., Dinarès-Turell J., Pucéat E., Shahriari S. & Radmacher W. (2018): Integrated bio- and carbon-isotope stratigraphy of the Upper Cretaceous Gurpi Formation (Iran): A new reference for the eastern Tethys and its implications for large-scale correlation of stage boundaries. – Cretaceous Research 91: 312-340.10.1016/j.cretres.2018.07.002 Search in Google Scholar

Riding J.B., Keating J.M., Snape M.G., Newham S. & Pirrie D. (1992): Preliminary Jurassic and Cretaceousdinoflagellate cyst stratigraphy of the James Ross Island area, Antarctic Peninsula. – Newsletters on Stratigraphy, pp. 19-39.10.1127/nos/26/1992/19 Search in Google Scholar

Riegel W. & Sarjeant W.A.S. (1982): Dinoflagellate cysts from the Upper Cretaceous of southern Spain: new morphological and taxonomic observations - Résultats de votre recherche - Bases bibliographiques Pascal et Francis. – Neues Jahrbuch für Geologie und Paläontologie, Abhandlungen 162(3): 286-303. Search in Google Scholar

Rjimati E., Id Sahara M., Amzahrou M., Essalmani B., Mustaphi H., Zemmouri A. & Benlkhedim A. (2002): Carte Géologique Sebkhat Oum Deba’, 1:100 000. (N. et mémoires n°494 Edition du service géologique du Maroc). Search in Google Scholar

Rjimati E., Michard A. & Saddiqi O. (2011): Anti-Atlas occidetal et provinces sahariennes. – Notes mémoires du Serv. Géologique n°561: pp. 1-95. Search in Google Scholar

Rjimati E. & Zemmouri A. (2009): Carte géologique du Maroc au 1/100 000-Feuille de Laâyoune-NG 28XXIII-2- Notice explicative. Notes et mémoires du Service Géologique n°492 bis. Search in Google Scholar

Robinson V.D. & Engel M.H. (1993): Characterization of the Source Horizons Within the Late Cretaceous Transgressive Sequence of Egypt: Chapter 7, 33: 101-117.10.1306/St37575C7 Search in Google Scholar

Roncaglia L. & Corradini D. (1997): Correlation of key dinoflagellate events with calcareous nannoplankton and planktonic foraminiferal zones in the Solignano Formation (Maastrichtian, Late. – Review of Palaeobotany and Palynology 97(1-2): 177-196.10.1016/S0034-6667(96)00070-X Search in Google Scholar

Sachse V.F., Heim S., Jabour H., Kluth O., Schümann T., Aquit M. & Littke R. (2014): Organic geochemical characterization of Santonian to Early Campanian organic matter-rich marls (Sondage No. 1 cores) as related to OAE3 from the Tarfaya Basin, Morocco. Marine and Petroleum Geology. Elsevier Ltd.10.1016/j.marpetgeo.2014.02.004 Search in Google Scholar

Sachse V.F., Littke R., Heim S., Kluth O., Schober J., Boutib L. & Jabour H. (2011) Petroleum source rocks of the Tarfaya Basin and adjacent areas, Morocco. – Organic Geochemistry 42(3): 209-227.10.1016/j.orggeochem.2010.12.004 Search in Google Scholar

Schrank E. (1987): Palaeozoic and Mesozoic palynomorphs from northeast Africa (Egypt and Sudan) with special reference to Late Cretaceous pollen. – Berl. Geowiss. Abh. A 75: 249-310. Search in Google Scholar

Schrank E. & Mia I. (1995): Cretaceous (Aptian-Maastrichtian) palynology of foraminifera-dated wells (KRM1, AG-18) in northwestern Egypt. – Mitt Mus Natkd Berl, Geowiss Reihe 1: 144-167. Search in Google Scholar

Slimani H. (1995): Les Dinokystes des craies du Campanien au Danien à Hallembaye et Turnhout (Belgique), et à Beutenaken (Pays-Bas): Biostratigraphie et systematique. Research Unit Palaeontology, Ghent University. Search in Google Scholar

Slimani H. (2001a): New species of dinoflagellate cysts from the Campanian-Danian chalks at Hallembaye and Turnhout (Belgium) and at Beutenaken (the Netherlands). – Journal of Micropalaeontology (Vol. 20).10.1144/jm.20.1.1 Search in Google Scholar

Slimani H. (2001b): Les kystes de dinoflagellés du Campanien au Danien dans la région de Maastricht (Belgique et PaysBas) et de Turnhout (Belgique): biozonation et corrélation avec d’autres régions en Europe occidentale. – Geol. Palaeontol 35: 161-201. Search in Google Scholar

Slimani H., Louwye S., Dusar M. & Lagrou D. (2011): Connecting the Chalk Group of the Campine Basin to the dinoflagellate cyst biostratigraphy of the Campanian to Danian in borehole Meer (northern Belgium). Geologie en Mijnbouw. – Netherlands Journal of Geosciences 90(2-3): 129-164.10.1017/S0016774600001074 Search in Google Scholar

Sluijs A., Pross J. & Brinkhuis H. (2005): From greenhouse to icehouse: organic-walled dinoflagellate cysts as paleoenvironmental indicators in the Paleogene. – Earth-Science Reviews 68(3-4): 281-315.10.1016/j.earscirev.2004.06.001 Search in Google Scholar

Smith S.A., Levy M.G. & Noga E.J. (1992): Development of an enzyme-linked immunosorbent assay (ELISA) for the detection of antibody to the parasitic dinoflagellate Amyloodinium ocellatum in Oreochromis. – Veterinary parasitology 42: 145-155.10.1016/0304-4017(92)90110-U Search in Google Scholar

Soncini M.J. & Rauscher R. (1988): Association de dinokystes du Maastrichtien superieur phosphate au Maroc. Bulletin des Centres de recherches exploration-production Elf-Aquitaine 12(1): 427-450. Search in Google Scholar

Stover L., Brinkhuis H., Damassa S.P., de Verteuil L., Helby R.J., Monteil E., Partridge A.D., et al. (1996): Mesozoic-Tertiary dinoflagellates, acritarchs and prasinophytes. Palynology: principles and applications 2. Search in Google Scholar

Suttner L.J. & Dutta P.K., (1986): Alluvial sandstone composition and paleoclimate, I. Framework mineralogy.: Journal of Sedimentary Petrology, v. 56, pp. 329-345. Search in Google Scholar

Tahoun S.S., Deaf A.S. & Ied I.M. (2018): The use of cyclic stratigraphic pattern of peridinioid and gonyaulacoid dinoflagellate cysts in differentiating potential thick monotonous carbonate reservoirs: A possible. – Marine and Petroleum Geology 96: 240-253.10.1016/j.marpetgeo.2018.05.030 Search in Google Scholar

Tahoun S.S. & Ied I.M. (2019): A Cretaceous dinoflagellate cyst palynozonation of northern Egypt. – Palynology 43(3): 394-410.10.1080/01916122.2018.1449029 Search in Google Scholar

Tea-Yassi J., Digbehi Z.B., Yao K.R. & Glohi B.V. (1999): Etude de quelques palynomorphes du cretace superieur du bassin offshore de cote d’Ivoire: Implications biostratigraphiques et paleoenvironmentales. – Journal of African Earth Sciences 29(4): 783-798.10.1016/S0899-5362(99)00129-3 Search in Google Scholar

Tissot B.P. & Welte D.H. (1984): Petroleum formation and occurrence. Springer Science & Business Media. Tourtelot H.A. (1979): Black shale - its deposition and diagenesis. – Clay and Clay Minerals 27(5): 313-321.10.1346/CCMN.1979.0270501 Search in Google Scholar

Tyson R.V. (1993): Palynofacies Analysis. – Applied Micropalaeontology (pp. 153-191).10.1007/978-94-017-0763-3_5 Search in Google Scholar

Tyson R.V. (1995). Abundance of Organic Matter in Sediments: TOC, Hydrodynamic Equivalence, Dilution and Flux Effects. – Sedimentary Organic Matter (pp. 81–118).10.1007/978-94-011-0739-6_5 Search in Google Scholar

Von Rad U. & Wissmann G. (1982): Cretaceous-Cenozoic History of the West Saharan Continental Margin (NW Africa): Development, Destruction and Gravitational Sedimentation, pp. 106-131. Springer, Berlin, Heidelberg.10.1007/978-3-642-68409-8_7 Search in Google Scholar

Wall D., Dale B., Lohmann G. P. & Smith W.K. (1977): The environmental and climatic distribution of dinoflagellate cysts in modern marine sediments from regions in the North and South Atlantic Oceans and adjacent seas. – Marine Micropaleontology 2(C): 121-200.10.1016/0377-8398(77)90008-1 Search in Google Scholar

Wignall P.B., (1994): Black shales: Oxford University Press. Search in Google Scholar

Williams G.L., Brinkhuis H., Pearce M.A., Fensome R.A. & Weegink J.W. (2004): Southern Ocean and global dinoflagellate cyst events compared: index events for the Late Cretaceous–Neogene. Proceedings of the Ocean Drilling Program (pp. 1-98).10.2973/odp.proc.sr.189.107.2004 Search in Google Scholar

Wilson G. (1971): Observations on European Late Cretaceous Dinoflagellae Cysts. Proceedings II Planktonic Conference (pp. 1259-1275). Rome. Search in Google Scholar

Yepes O. (2001): Maastrichtian-danian dinoflagellate cyst biostratigraphy and biogeography from two equatorial sections in Colombia and Venezuela. – Palynology 25(1): 217-249. Search in Google Scholar

Zouhri S., Gingerich P.D., Elboudali N., Sebti S., Noubhani A., Rahali M. & Meslouh S. (2014): New marine mammal faunas (Cetacea and Sirenia) and sea level change in the Samlat Formation, Upper Eocene, near Ad-Dakhla in southwestern Morocco. – Comptes Rendus 13(7): 599-610.10.1016/j.crpv.2014.04.002 Search in Google Scholar

Zouhri S., Khalloufi B., Bourdon E., De Lapparent, De Broin F., Rage J.C., M’Haïdrat L., Gingerich P.D.(2018): Marine vertebrate fauna from the late Eocene Samlat Formation of Ad-Dakhla, southwestern Morocco. – Geological Magazine 155(7): 1596-1620.10.1017/S0016756817000759 Search in Google Scholar

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