Fifth-order cyclicity and organic matter contents relationship (Lower Eocene, Pyrenees)


  • F. Calvet Universitat de Barcelona.
  • E. Playà Universitat de Barcelona.
  • J. Giménez-Montsant Universitat de Barcelona.
  • A. Permanyer Universitat de Barcelona.



Cherty-ostracode facies, Organic geochemistry, Cyclicity, Corones Formation, Eocene


The Upper Limestone Member of the Corones Formation of the Spanish Pyrenees consists of various units (Lower and the Upper Foraminifera Units, Shale Unit, Cherty-ostracode Unit, Ostracode Unit and Chara-ostracode Unit) and offers strong facies and lateral thickness (20 to 80 m) variations. Detailed facies analyses, fifth-order cycles and organic geochemical determinations in the central domain of the Corones platform carbonates (Cherty-ostracode Unit), lower Eocene in age, were carried out to establish a case of close relationship between variations in organic matter productivity and cyclicity with annual period. The Cherty-ostracode Unit displays a continuous and pervasive fifth-order cyclicity, represented by 5 cycles. Each cycle consists of a lower part (mollusc facies) and an upper part (laminated ostracode facies). The calculated fifth-order cycle period ranges from about 17,000 to 28,000 years, which falls within the Milankovitch Band. Variations in organic matter content related to these carbonate cycles have been established. The lower mollusc facies members show a low organic carbon content and Hydrogen Index (HI) below 0.6% in weight and 261, respectively. By contrast, the upper laminated ostracode facies members show high organic carbon contents (up to 2% in weight) and high HI (between 164 and 373), and are also characterized by important silicification processes (the content in chert is up to 30%). The organic geochemistry resulting from these organic rich levels reflects a contribution of algal marine input.

Author Biographies

F. Calvet, Universitat de Barcelona.

Departament de Geoquímica, Petrologia i Prospecció Geològica.

E. Playà, Universitat de Barcelona.

Departament de Geoquímica, Petrologia i Prospecció Geològica.

J. Giménez-Montsant, Universitat de Barcelona.

Departament de Geoquímica, Petrologia i Prospecció Geològica.

A. Permanyer, Universitat de Barcelona.

Departament de Geoquímica, Petrologia i Prospecció Geològica.


Aigner, T., 1982. Calcareous tempestites: strom dominated stratification. Upper Muschelkalk limestones (Middle Trias, SW Germany). In: Einsele, G., Seilacher, A. (eds.). Cyclic event stratification. Berlin, Springer-Verlag, 180-198.

Ainsworth, N.R., Burnett, R.D., Kontrovitz, M., 1990. Ostracod colour change by thermal alteration, offshore Ireland and Western UK. Marine and Petroleum Geology, 7, 288-297.

Anderson, R.Y., 1986. The varve microcosm: propagator of cyclic bedding. Paleoceanography, 1, 373-382.

Andrews, J.E., Walton, W., 1990. Depositional environments within Middle Jurassic oyster-dominated lagoons: an integrated litho-, bio- and palynofacies study of the Duntulm Formation (Great Estuarine Group, Inner Hebrides). Transactions of the Royal Society of Edinburgh: Earth Sciences, 81, 1-22.

Berger, A., 1988. Milankovitch theory and climate. Reviews of Geophysics, 26, 624-657.

Blumer, M., Guillart, R.R.L., Chase, T., 1971. Hydrocarbon of marine phytoplankton. Marine Biology, 8, 183.

Brasier, M.D., 1980. Microfossils. London, George Allen and Unwin, 193 pp.

Busquets, P., 1981. Estratigrafia i sedimentologia del Terciari prepirinenc entre els rius Llobregat i Fresser - Ter. Doctoral thesis. Universitat de Barcelona, 534 pp.

Carbonel, P., Mourguiart, Ph., Peypouquet, J.P., 1988. Le polymorphisme induit par l´environnement chez les ostracodes.`Role du rythme saisonnier. Strata, 4, 1-12.

Carbonel, P., Mourguiart, Ph., Peypouquet, J.P., 1990. The external mechanisms responsible for morphological variability in Recent Ostracoda: seasonality and biotope situation: an example from Lake Titicaca. In: Whatley, R., Maybury, C. (eds.). Ostracoda and Global Events. London, Chapman and Hall, 357-363.

Cayeaux, L., 1929. Les roches sedimentaires de France-roches siliceuses. Paris, Imprimerie Nationale, 744 pp.

Choi, D.R., Ginsburg, R.N., 1982. Siliciclastic foundations of Quaternary reefs in the Southernmost Belize Lagoon, British Honduras. Geological Society of America Bulletin, 93, 116-126.

Debeney, J.P., Peypouquet, J.P., Pages, J., 1990. Variation saisonnière des populations d’Ostracodes de la Ria sursalée de la Casamance (Sénégal). Geobios, 23, 699-713.

Eley, B.E., Jull, R.K., 1982. Chert in the Middle Silurian Fossil Hill Formation of Manitoulin Island, Ontario. Bulletin of Canadian Petroleum Geology, 30, 208-215.

Espitalié, J., Deroo, G., Marquis, F., 1985/86. La pyrolyse Rock Eval et ses applications. Revue de l’Institut Français du Pé trole, Part I (1985), 40, 563-578; Part II (1985), 40, 755-784; Part III (1986), 41, 73-89.

Espitalié, J., Laporte, J.L., Madec, M., Marquis, F., Leplat, P., Paulet, J., Boutefeu, A., 1977. Méthode rapide de caractérisation des roches mères, de leur potentiel pétrolier et de leur degré d’évolution. Revue de l’Institut Français du Pétrole, 32, 23-42.

Estévez, A., 1973. La vertiente meridional del Pirineo Catalán al N del curso medio del Río Fluviá. Doctoral thesis. Universidad de Granada, 519 pp.

Fischer, A.G., 1964. The Lofer cyclothems of the Alpine Triassic. Kansas Geological Survey Bulletin, 169, 107-149.

Fischer, A.G., Herbert, T., 1986. Stratification rhythms: ItaloAmerican studies in the Umbrian facies. Memorie della Società Geologica Italiana, 31, 45-51.

Fischer, A.G., Bottjer, D.J., 1991. Orbital forcing and sedimentary sequences. Journal of Sedimentary Petrology, 61, 1063-1069.

Fischer, A.G., Roberts, LL.T., 1991. Ciclicity in the Green River Formation (Lacustrine Eocene) of Wyoming. Journal of Sedimentary Petrology, 61, 1146-1154.

Gao, G., Land, L.S., 1991. Nodular chert from the Arbuckle Group, Slick Hills, SW Oklahoma: a combined field, petrographic and isotopic study. Sedimentology, 38, 857-870.

Geeslin, J.H., Chafetz, H.S., 1982. Ordovician Aleman ribbon cherts: an example of silicification prior to carbonate lithification. Journal of Sedimentary Petrology, 52, 1283-1293.

Gelpi, E., Scheider, H., Mann, J., Oró, T., 1970. Hydrocarbons of geochemical significance in microscope algae. Phytochemistry, 9, 603-612.

Gich, M., 1969. Las unidades litostratigráficas del Eoceno prepirenaico del Ripollés Oriental. Acta Geologica Hispanica, 8, 120-124.

Giménez, J., 1993. Análisis de cuenca del Eoceno inferior de la Unidad Cadí (Pirineo Oriental). El sistema deltaico y de plataforma carbonática de la Formación Corones. Doctoral thesis. Universitat de Barcelona, 344 pp.

Giménez, J., Calvet, F., 1990. Seasonal control into ostracoderich facies in the lower Eocene, southeastern Pyrenees, Spain. 13th International Sedimentological Congress, Nottingham, Abstracts, p.190.

Giménez-Montsant, J., Salas, R., 1997. Subsidence analysis in trust tectonics. Application to the southeastern Pyrenean foreland. Tectonophysics, 282, 331-352.

Giménez-Montsant, J., Calvet, F., Tucker, M.E., 1999. Silica diagenesis in Eocene shallow-water platform carbonates, southern Pyrenees. Sedimentology, 46(6), 969-984.

Han, J., Calvin, M., 1969. Hydrocarbon ditributions os algae and bacteria and microbiological activity in sediments. Proceedings of the National Academy of Sciences of the United States of America, 64, 436-443.

Hottinger, L., 1961. Recherches sur les Alveolines du Paleocène et de l’ Eocène. Memoires de la Societé Paleontologique Suisse, LXXV-LXXVII, 243 pp.

Kilenyi, T.I., 1969. The problems of ostracod ecology in the Thames Estuary. In: Neale, J.W. (ed). The Taxonomy, Morphology and Ecology of Recent Ostracoda. Edinbourgh, Oliver and Boyd, 251-267.

Kilenyi, T.I., 1971. Some basic questions in the palaeoecology of ostracods. In: Oertli, H.J. (ed.). Colloque sur la Paléoécologie des Ostracodes. Bulletin Centre de Recherches, Societé Nationale Pétrole d’Aquitaine, 5, 31-44.

Kontrovitz, M., 1975. A study of the differential transportation of ostracodes. Journal of Paleontology, 49, 937-941.

López, M., 1991. Estratigrafía y sedimentología del sector occidental del abanico costero de Sant Llorenç del Munt al este de Sant Vicenç de Castellet (Eoceno, Cuenca de Antepaís Surpirenaica). Master Dissertation Thesis. Universitat de Barcelona, 135 pp.

Maliva, R.G., Siever, R., 1989. Chertification histories of some Late Mesozoic and Middle Palaeozoic platform carbonates. Sedimentology, 36, 907-926.

Mey, P.H.W., Nagtegaal, P.J.C., Roberti, K.J., Hartevelt, J.J.A., 1968. Lithostratigraphic subdivision of post-hercynian deposits in the south-central Pyrenees, Spain. Leidse Geologische Mededelingen, 41, 221-228.

Meyers, W.J., 1977. Chertification in the Mississippian Lake Valley Formation, Sacramento Mountains, New Mexico. Sedimentology, 24, 75-105.

Muñoz, J.A., 1985. Estructura alpina i herciniana a la vora sud de la zona axial del Pirineu oriental. Doctoral thesis. Universitat de Barcelona, 305 pp.

Muñoz, J.A., Martínez, A., Vergés, J., 1986. Thrust sequences in the eastern Spanish Pyrenees. Journal of Structural Geology, 8, 399-405.

Muñoz, J.A., Casas, J.M., Martínez, A., Vergés, J., 1988. An introduction to the structure of the Southeastern Pyrenees. The Ter-Freser cross-section. Symposium on the Geology of the Pyrenees and Betics, Barcelona, Excursion guidebook, 85 pp.

Namy, J.N., 1974. Early diagenetic chert in the Marble Falls Group (Pennsylvanian) of Central Texas. Journal of Sedimentary Petrology, 44, 1262-1268.

Oehler, J.H., 1975. Origin and distribution of silica lephispheres in porcelanite from the Monterey Formation of California. Journal of Sedimentary Petrology, 45, 252-257.

Oertli, H.J., 1971. The aspect of ostracode faunas- A possible new tool in petroleum sedimentology. In: Oertli, H.J. (ed.). Colloque sur la Paléoécologie des Ostracodes. Bulletin Centre de Recherches, Societé Nationale Pétrole d’Aquitaine, 5, 137-151.

Parnell, J., 1988. Significance of lacustrine cherts in the environment pf source-rocks deposition in the Orcadian Basin, Scotland. In: Fleetm, A.J., Kelts, K., Talbot, H.R. (eds.). Lacutrine Petroleoun Source Rocks. Special Publication Geological Society of London, 40, 205-217.

Peypouquet, J.P., 1971. La distinction des biocenoses, thanatocenoses, paleothanatocenoses: problème fonamental sur une plateforme continentale. Bulletin de l’Institut de Géologie du Bassin Aquitaine, 11, 191-208.

Peypouquet, J.P., Carbonel, P., Ducasse, O., Farmer, M., Lete, C., Mourguiart, Ph., 1988. Le polymorphisme induit par l’environnement chez les ostracodes son interet pour l’ evolution. Strata, 4, 13-19.

Pokorny, V., 1978. Ostracodes. In: Haq, B.U., Boersma, A. (eds.). Introduction to marine micropaleontology. New York, Elsevier, 109-149.

Puigdefàbregues, C., Muñoz, J.A., Marzo, M., 1986. Thrust belt development in the eastern Pyrenees and related depositional sequences in the southern foreland basin. International Association of Sedimentologists, Special Publication, 8, 229-246.

Pujadas, J., Casas, J.M., Muñoz, J.A., Sábat, F., 1989. Thrust tectonics and paleogene syntectonic sedimentation in the Empordà area, souhteastern Pyrenees. Geodinamica Acta, 3, 195-206.

Read, J.F, 1995. Overwiew of carbonate platform sequences, cycle stratigraphy and reservoirs in greenhouse and icehouse worlds. In: Read, J.K., Kerans, C., Weber, L.J. (eds.). Milankowitch sea level changes, cycles and reservoirs on carbonate platforms in greenhouse and ice-house worlds. Tulsa, SEPM Short Course Notes, 35, 1-95.

Reyment, R.A., 1960. Studies on Nigerian Upper Cretaceous and Lower Tertiary Ostracoda. Part 1: Senonian and Maestrichtian Ostracoda. Stockholm Contributions in Geology, 7, 1-238.

Ripepe, M., Roberts, LL.T., Fischer, A.G., 1991. Enso and sunspot cycles in varved Eocene oil shales from image analysis. Journal of Sedimentary Petrology, 61, 1155-1163.

Santisteban, C., Taberner, C., 1988. Sedimentary models of siliciclastic deposits and coral reefs interrelation. In: Doyle, L.J., Roberts, H.H. (eds.). Carbonate - Clastic Transitions. Amsterdam, Elsevier, 35-76.

Sclater, J.G., Christie, P.A.F., 1980. Continental stretching: an explanation of the post Mid-Cretaceous subsidence of the central North Sea basin. Journal of Geophysical Research, 85, 3711-3739.

Serra-Kiel, J., Hottinger, L., Drobne, K., Ferrández, C., Less, G., Jauhri, A.K., Pignatti, J., Samsó, J.M., Schaub, H., Sirel., E., Tambareau, Y., Tosquella, J., Zakrevskaya, E., 1998. Benthic Foraminifera from Paleocene and Eocene. In: De Graciansky, P.C., Hardenbol, J., Jacquin, T., Vail, P.R. (eds.). Mesozoic-Cenozoic Sequence Stratigraphy of Western European Basins. SEPM Special Publications, 60, p. 767.

Simoneit, B.R.T., Vucher, U.T., Grimalt, J.O., 1984. Organic matter along the sedimentary sequences of the moroccan continental margin. Leg. 70, sites 545 and 547. Initial Reports Deep Sea Drilling Project, LXXIX, 807-824.

Solé Sabaris, L., 1958. El Eoceno del alto valle del Ter. Guía III Congreso Instituto Estudios Pirenaicos, Girona (Spain), 7-9.

Tankard, A.J., 1986. On the depositional response to thrusting and lithospheric flexure: examples from the Appalachian and Rocky Mountain basins. In: Allen, P.A., Homewood, P. (eds.). Foreland Basins. International Association of Sedimentologists, Special Publication, 8, 369-392.

Tosquella, J., Samsó, J.M., 1996. Bioestratigrafía y litoestratigrafía del Paleoceno Superior-Eoceno Inferior del sector oriental de la Cuenca Surpirenainca. Acta Geologica Hispanica, 31(1-3), 3-21.

Vergés, J., Martínez, A., 1988. Corte compensado del Pirineo oriental: Geometría de las cuencas de antepaís y edades de emplazamiento de los mantos de corrimiento. Acta Geologica Hispanica, 23, 95-105.

Vergés, J., Marzo, M., Santaeulària, T., Serra-Kiel, J., Burbank, D.W., Muñoz, J.A., Giménez-Montsant, J., 1998. Quantified vertical motions and tectonic evolution of the SE Pyrenean foreland basin. In: Mascle, A., Puigdefàbregas, C., Luterbacher, H.P., Fernàndez, M. (eds.). Cenozoic Foreland Basins of Western Europe. Bath, Geological Society of London Special Publications, 134, 107-134.

Wheatley, R.C., 1988. Population structure of ostracods: some general principles for the recognition of palaeoenvironments. In: De Deckker, P., Colin, J.P., Peypouquet, J.P. (eds.). Ostracoda in the Earth Sciences. Amsterdam, Elsevier, 245-256.

Wheatley, R.C., Wall, D.R., 1969. A preliminary account of the ecology and distribution of recent ostracoda in the Southern Irish Sea. In: Neale, J.W. (ed.). The Taxonomy, Morphology and Ecology of Recent Ostracoda. Edinbourgh, Oliver and Boyd, 268-298.