The early/middle Eocene transition at the Ésera valley (South Central Pyrenees): Implications in Shallow Benthic Zones (SBZ)
DOI:
https://doi.org/10.1344/GeologicaActa2022.20.6Keywords:
Magnetostratigraphy, Larger benthic foraminifera, Calcareous nannofossils, Ypresian – Lutetian boundary, South-Central Pyrenean BasinAbstract
An integrated study including magnetostratigraphy, larger benthic foraminifera and calcareous nannofossil biostratigraphy is presented herein. This work was performed in shallow marine siliciclastics rich in larger foraminifera, around the Ypresian/Lutetian boundary in the Ésera valley (South-Central Pyrenees). Although the calcareous nannofossil content in the studied interval is low, not allowing a precise Y/L boundary to be recognised, the taxa found are enough to support the chronostratigraphic attribution.
Data obtained in the Ésera valley section has improved the knowledge of larger benthic foraminifera (Nummulites and Assilina) distribution through chron C21. SBZ 11 to SBZ 12 transition took place at the lowermost C21r, as shown in previous works. SBZ 12 assemblages extend into C21n, where the SBZ 12 to SBZ 13 boundary occurs. These data, obtained in shallow marine siliciclastic facies, with in situ fauna, results in a shift of the SBZ 12/SBZ 13 boundary to the Lower Lutetian, younger than previously believed. Accordingly, the Ypresian/Lutetian boundary occurs in SBZ 12.
References
Agnini, C., Muttoni, G., Kent, D.V., Rio, D., 2006. Eocene biostratigraphy and magnetic stratigraphy from Possagno, Italy: the calcareous nannofossil response to climatic variability. Earth and Planetary Science Letters, 241, 815-830.
Agnini, C., Fornaciari, E., Raffi, I., Catanzariti, R., Pälike, H., Backman, J., Rio, D., 2014. Biozonation and biochronology of Paleogene calcareous nannofossils from low and middle latitudes. Newsletters on Stratigraphy, 47, 131-181. DOI: http://doi.org/10.1127/0078‐0421/2014/0042
Allmendinger, R.W., Cardozo, N.C., Fisher, D., 2013. Structural geology algorithms: Vectors & Tensors. Cambridge, Cambridge University Press, 289pp.
Atkinson, C.D., 1986. Tectonic control on alluvial sedimentation as revealed by an ancient catena in the Capella Formation (Eocene) of Northern Spain. In: Wright, V.P. (ed.). Palaeosols: their Recognition and Interpretation. Oxford, Blackwells, 139-179.
Atkinson, C.D., Elliott, K.T., 1985. Patterns of sedimentation in the South Pyrenean Basin: a tectono-sedimentary model for molasse accumulation in a thrust sheet top basin. In: Allen, P.A.A., Homewood, P., Williams, G.D. (eds.). Abstracts of the International symposium on Foreland basins. Fribourg (Switzerland), International Association of Sedimentologists Thematic meeting, 32.
Aubry, M.P., 1995. From chronology to stratigraphy: interpreting the Lower and Middle Eocene stratigraphic record in the Atlantic Ocean. In: Berggren, W.A., Kent, D.V., Aubry, M.P., Hardenbol, J. (eds.). Geochronology, Time Scales and Global Stratigraphic Correlation. Society for Sedimentary Geology (SEPM) Special Publication, 54, 213-274.
Backman, J., 1986. Late Paleocene to middle Eocene calcareous nannofossil biochronology from Shatsky Rise, Walvis Ridge
and Italy. Palaeogeography, Palaeoclimatology, Palaeoecology, 57, 43-59.
Barnolas, A., Pujalte, V., 2004. La Cordillera Pirenaica. Definición, límites y división. In: Vera, J.A. (ed.). Geología de España.
Instituto Geológico y Minero de España, Sociedad Geológica de España, 233-241.
Barnolas, A., Samsó, J.M., Teixell, A., Tosquella, J., Zamorano, M., 1991. Evolución sedimentaria entre la cuenca de GrausTremp y la cuenca de Jaca-Pamplona. In: Colombo, F. (ed.). Libro-Guía Excursión 1. I Congreso del Grupo Español del
Terciario. Vic (Spain), EUMO Gràfic, 123pp.
Barnolas, A., Payros, A., Samsó, J.M., 2004. La Cuenca surpirenaica desde el Ilerdiense medio al Priaboniense. In: Vera, J.A. (ed.). Geología de España. Instituto Geológico y Minero de España, Sociedad Geológica de España, 313-320.
Barnolas, A., Larrasoaña, J.C., Pujalte, V., Schmitz, B., Sierro, F.J., Mata, M.P., van der Berg, B.C.J., Pérez-Asensio, J.N., Salazar,
A., Salvany, J.M., Ledesma, S., García-Castellanos, D., Civis, J., Cunha, P., 2019. Alpine Foreland Basins. In: Quesada, C., Oliveira, J.T. (eds.). The Geology of Iberia: A Geodynamic Approach. Springer Nature, 4, 7-59.
Beamud, E., Garcés, M., Muñoz, J.A., Cabrera, Ll., Almar, Y., 2004. Distribución de las rotaciones paleomagnéticas en la cuenca de Graus-Tremp durante el Terciario. Geotemas, 6(4), 283-285.
Bentham, P., Burbank, D.W., 1996. Chronology of Eocene foreland basin evolution along the western oblique margin of the
South-Central Pyrenees. In: Friend, P.F., Dabrio, C.J. (eds.). Tertiary basins of Spain. Cambridge, Cambridge University Press, 144-152.
Bernaola, G., Orue-Etxebarria, X., Payros, A., DinarèsTurell, J., Tosquella, J., Apellaniz, E., Caballero, F., 2006. Biomagnetostratigraphic analysis of the Gorrondatxe section (Basque Country, Western Pyrenees): Its significance for the
definition of the Ypresian/Lutetian boundary stratotype. Neues Jahrbuch für Geologie und Paläontologie Abhandlungen, 241, 67-109.
Bingham, C., 1974. An antipodally symmetric distribution on the sphere. The Annals of Statistics, 2(6), 1201-1225.
de Boer, P.L., Pragt, J.S.J., Oost, A.P., 1991. Vertically persistent sedimentary facies boundaries along growth anticlines and climate-controlled sedimentation in the thrust-sheet-top South Pyrenean Tremp-Graus Foreland Basin. Basin Research, 3(2), 63-78.
Bown, P.R., 2005. Paleogene calcareous nannofossils from the Kilwa and Lindi areas of coastal Tanzania: Tanzania Drilling Project Sites 1 to 10. Journal of Nannoplankton Research, 27, 21-95.
Bown, P.R., Young, J.R., 1998. Techniques. In: Bown, P.R. (ed.). Calcareous Nannofossil Biostratigraphy. British Micropaleontological Society Publications Series, London, Kluwer Academic Press, 16-28.
Cardozo, N., Allmendinger, R.W., 2013. Spherical projections with OSXStereonet. Computers & Geosciences, 51(0), 193-205.
Chanvry, E., Deschamps, R., Joseph, Ph., Puigdefàbregas, C., Poyatos-Moré, M., Serra-Kiel, J., Garcia, D., Teinturier, S., 2018. The influence of intrabasinal tectonics in the stratigraphic evolution of piggyback basin fills: Towards a model from the Tremp-Graus-Ainsa Basin (South-Pyrenean Zone, Spain). Sedimentary Geology, 377, 34-62.
Costa, E., Garcés, M., López-Blanco, M., Serra-Kiel, J., Bernaola, G., Cabrera, L., Beamud, E., 2013. The Bartonian–Priabonian
marine record of the eastern South Pyrenean foreland basin (NE Spain): a new calibration of the larger foraminifers and calcareous nannofossil biozonation. Geologica Acta, 11(2), 177-193. DOI: http://dx.doi.org/10.1344/105.000001779
Crumeyrolle, Ph., 1987. Stratigraphie physique et sédimetation des systèmes de dépôt de la séquence de Santa Liestra (Eocéne sud-pyrénéen, Pyrénées Aragonaises, Espagne). Thèse. Université de Bordeaux III, unpublished, 216pp.
Crumeyrolle, P., Mutti, E., 1986. Stratigraphy and sedimentology of Santa Liestra shelf depositional systems; South-Pyrenean Eocene basin, Province of Huesca, Spain. Comptes Rendus de l’Académie des Sciences, Serie, 2(7), 581-584.
Cuevas-Gozalo, M.C., 1989. Sedimentary facies and sequential architecture of tide-influenced alluvial deposits. Geologica Ultraiectina, 61, 152pp.
Dinarès-Turell, J., 1992. Paleomagnetisme a les unitats sudpirinenques superiors. Implicacions estructurals. PhD Thesis. Barcelona (Spain), Universitat de Barcelona, unpublished, 462pp.
van Eden, J.G., 1970. A reconnaissance of deltaic environment in the Middle Eocene of the South-Central Pyrenees, Spain. Geologie en Mijnbouw, 49(2), 145-157.
Fisher, R.A., 1953. Dispersion on a sphere. Proceedings of the Royal Society A, 217, 295-305.
Garcés, M., López-Blanco, M., Valero, L., Beamud, E., Muñoz, J.A., Oliva-Urcía, B., Vinyoles, A., Arbués, P., Cabello, P., Cabrera, Ll., 2020. Paleogeographic and sedimentary evolution of the South-Pyrenean foreland basin. Marine and Petroleum Geology, 113, 104105. DOI: https://doi.org/10.1016/j.marpetgeo.2019.104105
Garrido-Mejías, A., 1968. Sobre la estratigrafía de los conglomerados de Campanué (Santa Liestra) y formaciones superiores del Eoceno (extremo occidental de la Cuenca Tremp-Graus, Pirineo Central, provincia de Huesca. Acta Geologica Hispanica, 3(2), 39-43.
Hallock, P., 1985. Why are larger foraminifera large? Paleobiology, 11, 195-208.
Hallock, P., 1999. Symbiont-bearing foraminifera. In: Gupta, B.K.S. (ed.). Modern Foraminifera. Amsterdam, Kluwer Academic, 123-139.
Hohenegger, J., Yordanova, E., Nakano, Y., Tatzreiter, F., 1999. Habitats of larger foraminifera on the upper reef slope of Sesoko Island, Okinawa, Japan. Marine Micropaleontology, 36, 109-168.
Honegger, L., Adatte, T., Spangenberg, J.E., Rugenstein, J.K.C., Poyatos-Moré, M., Puigdefàbregas, C., Chanvry, E., Clark, J., Fildani, A., Verrechia, E., Kouzmanov, K., Harlaux, M., Castelltort, S., 2020. Alluvial record of an early Eocene hyperthermal within the Castissent Formation, the Pyrenees, Spain. Climate of the Past, 16, 227-243.
Hottinger, L., 1960. Recherches sur les Alvéolines du Paléocène et de l’Eocène. Mémoires suisses de paléontologie, 75/76, 243pp.
Hottinger, L., 1974. Alveolinids, Cretaceous-Tertiary. Larger Foraminifera. Esso Production Research-European Laboratories, A. Schudel & Co. AG. Riehen/Basle, 84pp, 106pls.
Hottinger, L., Drobne, K., 1988. Alveolines tertiaires: quelques problèmes liés à la conception de l’espèce. Revue de Paléobiologie, 2 (Volume Spéciale), 665-681.
Hottinger, L., Schaub, H., 1964. Le synchronisme des biozones basé sur les Nummulites, Assilines et Alveolines. Mémoires Bureau Recherche Géologique et Minière, 28, 625-629.
Kapellos, Ch., Schaub, H., 1973. Zur Korrelation von Biozonierungen mit Grossforaminiferen und Nannoplakton im Paläogen der Pyrenäen. Eclogae geologicae Helvetiae, 66(3), 687-737.
Kirschvink, J.L., 1980. The least-squares line and plane and the analysis of paleomagnetic data. Geophysical Journal of the Royal Astronomical Society, 62, 699-718.
Langer, M.R., Hottinger, L.C., 2000. Biogeography of selected `larger’ foraminifera. Micropaleontology, 46, 105-127.
Larrasoaña, J.C., Parés, J.C., Pueyo, E.L., 2003. Stable Eocene magnetization carried by magnetite and magnetic iron sulphides in marine marls (Pamplona-Arguis Formation, southern Pyrenees, N Spain). Studia Geophysica Geodetica, 47, 237-254.
Larrasoaña, J.C., Gonzalvo, C., Molina, E., Monechi, S., Ortiz, S., Tori, F., Tosquella, J., 2008. Integrated magnetobiochronology of the Early/Midlle Eocene transition at Agost (Spain): Implications for defining the Ypresian/Lutetian boundary stratotype. Lethaia, 41, 395-415.
López-Olmedo, F., Ardèvol, L., 2016. Hoja nº 251 (Aren) del Mapa geológico de España a escala 1:50.000 (MAGNA). Madrid, Instituto Geológico y Minero de España (IGME).
Lowrie, W., 1990. Identification of ferromagnetic minerals in a rock by coercitivity and unblocking temperature properties. Geophysical Research Letters, 17(2), 159-162.
Luterbacher, H., Ali, J., Brinkhuis, H., Gradstein, F., Hooker, J., Monechi, S., Ogg, J., Powell, J., Röhl, U., Sanfilippo, A., 2005. The Paleogene period. In: Gradstein, F.M., Ogg, J.G., Smith, A.G. (eds.). A Geologic Time Scale 2004. Cambridge (U.K.), Cambridge University Press, 384-408.
Martini, E., 1971. Standard Tertiary and Quaternary calcareous nannoplankton zonation. In: Farinacci, A. (ed.). Proceedings of the Second International Conference of Planktonic Microfossils. Edizioni Tecnoscienza, 2, 739-785.
Mochales, T., Barnolas, A., Pueyo, E.L., Casas, A.M., Serra-Kiel, J., Samsó, J.M., Ramajo, J., Sanjuán, J., 2012. Chronostratigraphy of the Boltaña anticline and the Ainsa Basin (Southern Pyrenees). Geological Society of America (GSA) Bulletin, 124(7-8), 1229-1250.
Molina, E., Angori, E., Arenillas, I., Brinkhuis, H., Crouch, E.M., Luterbacher, H., Monechi, S., Schmitz, B., 2003. Correlation between the Paleocene/Eocene boundary and the Ilerdian at Campo, Spain. Revue de Micropaléontologie, 46, 95-109.
Molina, E., Alegret, L., Apellaniz, E., Bernaola, G., Caballero, F., Dinarès-Turell, J., Hardenbol, J., Heilmann-Clausen, C., Larrasoaña, J.C., Luterbacher, H., Monechi, S., Ortiz, S., Orue-Etxebarria, X., Payros, A., Pujalte, V., Rodríguez-Tovar, F.J., Tori, F., Tosquella, J., Uchman, A., 2011. The Global Stratotype Section and Point (GSSP) for the base of the Lutetian Stage at the Gorrondatxe section, Spain. Episodes, 34(2), 86-108.
Muñoz, J.A., Beamud, E., Fernández, O., Arbués, P., Dinarès-Turell, J., Poblet, J., 2013. The Ainsa Fold and thrust oblique zone of the central Pyrenees: Kinematics of a curved contractional system from paleomagnetic and structural data. Tectonics, 32, 1142-1175.
Mutti, E., Remacha, E., Sgavetti, M., Rosell, J., Valloni, R., Zamorano, M., 1985. Stratigraphy and Facies Characteristics of the Eocene Hecho Group Turbidite Systems, South-Central Pyrenees. International Association of Sedimentologists, 6th. Europen Regional Meeting, Excursion Guidebook, 12, 519-576.
Mutti, E., Séguret, M. Sgavetti, M., 1988. Sedimentation and deformation in the Tertiary sequences of the southern Pyrenees. Nice, American Association of Petroleum Geologists (AAPG). Mediterranean Basins Conference and Exhibition, Field-Trip Guidebook, 7, 169pp.
Nijman, W., 1998. Cyclicity and basin axis shift in a piggyback basin: towards modelling of the Eocene Tremp-Ager Basin, South Pyrenees, Spain. The Geological Society of London, 134 (Special Publications), 135-162.
Nijman, W., Nio, S.D., 1975. The Eocene Montañana delta (Tremp-Graus Basin, provinces of Lérida and Huesca, Southern Pyrenees, N. Spain). In: Rosell, J., Puigdefabregas, C. (eds.). The sedimentary evolution of the Paleogene South Pyrenean Basin. Nice (France), IXth International Congress, International Association of Sedimentologists (IAS), Excursion Guidebook, 19, 56pp.
Nijman, W., Puigdefabregas, C., 1989. The Second Stage of the Foreland Basin. In: Marzo, M., Puigdefabregas, C. (eds.). Alluvial deposits of the successive foreland basin stages and their relation to the Pyrenean thrust sequences. Guidebook Series of the 4th International Conference on Fluvial Sedimentology, Publicacions del Servei Geològic de Catalunya, 30-62.
Norris, R.D., Wilson, P.A., Blum, P., and the Expedition 342, 2014. Proceedings. IODP, 342: college Station, TX (Integrated Ocean Drilling Program). DOI: 10.2204/iodp.proc.342.2014
Okada, H., Bukry, D., 1980. Supplementary modification and introduction of code numbers to the low latitude cocolith biostratigraphic zonation (Bukry 1973, 1975). Marine Micropaleontology, 5, 321-325.
Oliva-Urcia, B., Pueyo, E.L., 2019. Paleomagnetism in structural geology and tectonics. In: Mukherjee, S. (ed.). Teaching methodologies in structural geology and tectonics. Heidelberg, Springer, 55-121 (67pp). ISBN: 978-981-13-2781-0.1
Opdyke, M.D., Channell, J.E., 1996. Magnetic stratigraphy. Academic press, 64, 346pp.
Oron, S., Abramovich, S., Almogi-Labin, A., Woeger, J., Erez, J., 2018. Deep related adaptations in symbiotic bearing benthic foraminifera: New insights from a field experiment on Operculina ammonoides. Scientific reports, 8:9560. DOI: 10.1038/s41598-018-27838-8
Orue-Etxebarria, X., Payros, A., Bernaola, G., Dinarès-Turell, J., Tosquella, J., Apellaniz, E., Caballero, F., 2006. The Ypresian/Lutetian boundary at the Gorrondatxe beach section (Basque Country, W Pyrenees). Climate and Biota of the Early Paleogene. Bilbao, Mid Conference Field Excursion Guidebook, 36pp.
Orue-Etxebarria, X., Payros, A., Caballero, F., Molina, E., Apellaniz, E., Bernaola, G. (eds.), 2009. The Ypresian/Lutetian transition in the Gorrondatxe Beach (Getxo, Western Pyrenees): Review, recent advances and future prospects. Getxo, 25-27 september 2009, International Workshop on the Ypresian/Lutetian Boundary Stratotype, 215pp. ISBN: 978-84-692-44876
Payros, A., Orue-Etxebarria, X., Pujalte, V., 2006. Covarying sedimentary and biotic fluctuations in Lower-Middle Eocene Pyrenean deep-sea deposits: Palaeoenvironmental implications. Palaeogeography, Palaeoclimatology, Palaeoecology, 234(2-4), 258-276.
Payros, A., Bernaola, G., Orue-Etxebarria, X., Dinarès-Turell, J., Tosquella, J., Apellaniz, E., 2007. Reassessment of the Early–Middle Eocene biomagnetochronology based on evidence from the Gorrondatxe section (Basque Country, western Pyrenees). Lethaia, 40, 183-195.
Payros, A., Orue-Etxebarria, X., Bernaola, G., Apellaniz, E., Dinarès-Turell, J., Tosquella, J., Caballero, F., 2009a. Characterization and astronomically calibrated age of the first occurrence of Turborotalia frontosa in the Gorrondatxe section, a prospective Lutetian GSSP: implications for the Eocene time scale. Lethaia, 42, 255-264.
Payros, A., Tosquella, J., Bernaola, G., Dinarès-Turell, J., OrueEtxebarria, X., Pujalte, V., 2009b. Filling the North European Early/Middle Eocene (Ypresian/Lutetian) boundary gap: Insights from the Pyrenean continental to deep-marine record. Palaeogeography, Palaeoclimatology, Palaeoecology, 280, 313-332.
Payros, A., Dinarès-Turell, J., Bernaola, G., Orue-Etxebarria, X., Apellaniz, E., Tosquella, J., 2011. On the age of the Early/Middle Eocene boundary and other related events: cyclostratigraphic refinements from the Pyrenean Otsakar section and the Lutetian GSSP. Geological Magazine, 148, 442-460.
Perch-Nielsen, K., 1985. Cenozoic calcareous nannofossils. In: Bolli, H.M., Saunders, J.B., Perch-Nielsen, K. (eds.). Plankton Stratigraphy. Cambridge, Cambridge University Press, 427-554.
Pocovi, A., Pueyo Anchuela, Ó., Pueyo, E.L., Casas-Sainz, A.M., Román Berdiel, M.T., Gil Imaz, A., Ramajo Cordero, J., Mochales, T., García Lasanta, C., Izquierdo, E., Parés, J.M., Sánchez, E., Soto Marín, R., Oliván, C., Rodríguez Pintó, A., Oliva-Urcia, B., Villalaín, J.J., 2014. Magnetic fabrics in the Central-Western Pyrenees: an overview. In: Almqvist, B., Henry, B., Jackson, M., Werner, T., Lagroix, F. (eds.). ASM in deformed rocks a tribute to Graham J. Borradaile. Tectonophysics, 629, 303-318.
Poyatos-Moré, M., 2014. Physical Stratigraphy and Facies Analysis of the Castissent Tecto-Sedimentary Unit (SouthCentral Pyrenees, Spain). Ph.D. Thesis. Cerdanyola del Vallès, Universitat Autònoma de Barcelona, 282pp.
Pueyo, E.L., Millán, H., Pocovı, A., 2002. Rotation velocity of a thrust: a paleomagnetic study in the External Sierras (Southern Pyrenees). Sedimentary Geology, 146(1-2), 191-208.
Pueyo-Anchuela, Ó., Casas-Sainz, A.M., Pueyo, E.L., PocovíJuan, A., Gil-Imaz, A., 2013. Analysis of the ferromagnetic contribution to the susceptibility by low field and high field methods in sedimentary rocks of the Southern Pyrenees and Northern Ebro foreland basin (Spain). Terra Nova, 25(4), 307-314.
Pujalte, V., Baceta, J.I., Schmitz, B., Orue-Etxebarria, X., Payros, A., Bernaola, G., Apellaniz, E., Caballero, F., Robador, A., Serra-Kiel, J., Tosquella, J., 2009. Redefinition of the Ilerdian Stage (early Eocene). Geologica Acta, 7(1-2), 177-194.
Ramón, M.J., Pueyo, E.L., Oliva-Urcia, B., Larrasoaña, J.C., 2017. Virtual directions in paleomagnetism: A global and rapid approach to evaluate the NRM components. Frontiers in Earth Science, 5, 8. DOI: 10.3389/feart.2017.00008
Renema, W., Troelstra, S.R., 2001. Larger foraminifera distribution on a mesotrophic carbonate shelf in SW Sulawesi (Indonesia). Palaeogeography, Palaeoclimatology, Palaeoecology, 175, 125-146.
Robador, A., Zamorano, M., 2013. Hoja nº 212 (Campo) del Mapa geológico de España a escala 1:50.000 (MAGNA). Madrid, Instituto Geológico y Minero de España (IGME). Rodríguez-Pintó, A., Pueyo, E.L., Serra-Kiel, J., Samsó, J.M., Barnolas, A., Pocoví, A., 2012. Lutetian magnetostratigraphic calibration of larger foraminifera zonation (SBZ) in the Southern Pyrenees: The Isuela Section. Palaeogeography, Palaeoclimatology, Palaeoecology, 333-334, 107-120.
Rodríguez-Pintó, A., Pueyo, E.L., Serra-Kiel, J., Barnolas, A., Samsó, J.M., Pocoví, A., 2013. The Ypresian–Lutetian boundary in the Southwestern Pyrenean Basin; magnetostratigraphy from the San Pelegrín section. Palaeogeography, Palaeoclimatology, Palaeoecology, 370, 13-29.
Rodríguez-Pintó, A., Sanchez, E., Barnolas, A., Serra-Kiel, P., Samsó, J.M., Mochales, T., Pueyo, E.L., Scholger, R., 2017. Magnetostratigraphic data from lower part of Gabardiella section: Early - Middle Eocene, Southern Pyrenees. MAGIBER (Comisión de Paleomagnetismo de la Sociedad Geológica de España), X Valle del Grío, Universidad de Zaragoza, 30-33. ISBN: 978-84-16723-40-9
Rumpff, D., de Boer, P.L., 1985. A canyon-like marl filled depression in the Eocene Perarrúa fan-delta complex, S. Pyrenees, Spain. 6th International Association of Sedimentologists, European Regional Meeting Abstracts, 661-663.
Samsó, J.M., 1988. Estudi sedimentològic i biostratigràfic de la Formació St Esteve del Mall (Eocè, Conca de Tremp-Graus). Tesi de Llicenciatura. Barcelona, Universitat de Barcelona, Facultat de Geologia, unpublished, 540pp.
Schaub, H., 1951. Stratigraphie und Paläontologie des Schlierenflysches. Abhandlungen der Schweizerischen Paläontologischen Gesellschaft, 68, 222pp.
Schaub, H., 1966. Ueber die Grossforaminiferen im Untereocaen von Campo Ober-Aragonien). Eclogae Geologicae Helvetiae, 59, 355-377.
Schaub, H., 1973. La sección de Campo (Prov. de Huesca). XIII Coloquio Europeo de Micropaleontología, España, Comisión Nacional de Geología – Empresa Nacional Adaro de Investigaciones Mineras Sociedad Anónima, Madrid, Imprenta Pablo López, 151-170.
Schaub, H., 1981. Nummulites et Assilines de la Téthys Paléogène. Taxinomie, phylogénese et biostratigraphie. Mémoires suisses de paléontologie, 104-105-106, 236pp, 97pl.
Schaub, H., 1992. The Campo section (NE Spain), a Tethyan parastratotype of the Cuisian. Neues Jahrbuch für Geologie und Paläontologie, Abhandlungen, 186, 63-70.
Schneider, C., Speijer, R.P., 2009. Recalibration of the Tethyan shallowbenthic zonation across the Paleocene-Eocene boundary: the Egyptian record. Geologica Acta, 7(1-2), 195-214.
Séguret, M., 1972. Étude tectonique des nappes et séries décollées de la partie centrale du versant sud des Pyrénées - Caractère synsédimentaire, rôle de la compression et de la gravité. Montpellier, Publications de l’Université des Sciences et Techniques du Languedoc, Série géologie structurale, 2, 155pp.
Serra-Kiel, J., Hottinger, L., Caus, E., Ferràndez, C., Jauhri, A.K., Less, G., Pavlovec, R., Pignatti, J., Samsó, J.M., Schaub, H., Sirel, E., Strougo, A., Tosquella, J., Zakrevskaya, E., 1998. Larger foraminiferal biostratigraphy of the Tethyan Paleocene and Eocene. Bulletin de la Société géologique de France, 169(2), 281-299.
Speijer, R.P., Pälike, H., Hollis, C.J., Hooker, J.J., Ogg, J.G., 2020. The Paleogene Period (GTS 2020). In: Gradstein, F.M., Ogg, J.G., Schmitz, M.D., Ogg, G.M. (eds.). Geologic Time Scale 2020. Amsterdam, Elsevier, 2, 1087-1140. DOI: 10.1016/B978-0-12-824360-2.00028-0
Teixell, A., Zamorano, M., Ramírez, J.I., 2016. Hoja nº 250 (Graus) del Mapa geológico de España a escala 1:50.000 (MAGNA).
Madrid, Instituto Geológico y Minero de España (IGME).
Tori, F., Monechi, S., 2013. Lutetian calcareous nannofossil events in the Agost section (Spain): Implications toward a revision of the middle Eocene biomagnetostratigraphy. Lethaia, 46, 293-307. DOI: https://doi.org/10.1111/let.12008
Tosquella, J., 1995. Els Nummulitinae del Paleocè-Eocè Inferior de la Conca Sudpirinenca. PhD Thesis. Barcelona, Universitat de Barcelona, unpublished, 581pp.
Tosquella, J., Serra-Kiel, J., 1998. Los Nummulítidos (Nummulites y Assilina) del Paleoceno Superior-Eoceno Inferior de la Cuenca Pirenaica: Sistemática. Acta Geologica Hispanica, 31(1-3), 37-159.
van der Voo, R., 1990. The reliability of paleomagnetic data. Tectonophysics, 184(1), 1-9.
Westerhold, T., Röhl, U., Frederichs, T., Agnini, C., Raffi, I., Zachos, J.C., Wilkens, R.H., 2017. Astronomical calibration of the Ypresian time scale: Implications for seafloor spreading rates and the chaotic behavior of the solar system? Climate of the Past, 13, 1129-1152.
Young, J.R., Bown, P.R., 1997. Proposals for a revised classification system for calcareous nannoplankton. Journal of Nannoplankton Research, 19(1), 15-47.
Zijderveld, J.D.A., 1967. AC Demagnetization of Rocks: Analysis of Results. In: Runcorn, S.K., Creer, K.M., Collinson, D.W. (eds.). Methods in Palaeomagnetism. Amsterdam, Elsevier, 254-286.
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