Frasnian (Upper Devonian) lithostratigraphy of the Bernesga Valley (Cantabrian Mountains, NW Spain)

Loevezijn, Gerard van

doi:10.14746/logos.2025.31.2.09

Abstract

Sequence stratigraphic units are defined in terms of changes in relative sea level, and not on the compositional similarity of the lithology of the rock units. Sequence boundaries were used to support the formal definitions of the Gordón Member and the Millar Member of the Frasnian Nocedo Formation (Cantabrian Mountains). Therefore, each member consists of a broad range of lithologies. In this study each sequence of the Nocedo Formation is subdivided into formal lithological units and from each unit the stratigraphic characteristics and spatial distribution pattern is presented. Within one sequence the lithological units have gradational contacts, and their lateral distribution is consistent and complementary, allowing the understanding of the palaeogeographic picture of the region.

References

Aramburu C., Méndez-Bedia I., Arbizu M. & García-López S., 2004. Zona Cantábrica. Estratigrafía. La sequential preorogénica. [In:] Vera J.A. (Ed.): Géologia de España. SGE-IGME, Madrid, 27–34.
Search in Google Scholar Back to article
Burchette T.P. & Wright P., 1992. Carbonate ramp depositional systems. Sedimentary Geology 79, 3–57. https://doi.org/10.1016/0037-0738(92)90003-A
Search in Google Scholar Back to article
Comte P., 1959. Recherches sur les terrains anciens de la cordillaire Cantabrique [Research on ancient terrains of the Cantabrian mountain range]. Memorias del Instituto Geológico y Minero de España 60, 1–440.
Search in Google Scholar Back to article
Einsele G., 2000. Sedimentary basins, evolution, facies and sediment budget. 2^nd edition, Springer, Berlin, 792 pp. https://doi.org/10.1007/978-3-662-04029-4
Search in Google Scholar Back to article
Frankenfeld H., 1984. Deckenbewegungen im Namur des östlichen Kantabrisches Gebirges und die damit verbundenen Vorstellung über die Paläogeographie der Namur und Prä-Namur Schichten [Nappe movements in the Namur of the eastern Cantabrian Mountains and the associated ideas about the paleogeography of the Namur and Pre-Namur strata]. Zeitschrift der Deutschen Geologischen Gesellschaft 135, 223–241.
Search in Google Scholar Back to article
García Alcalde J.L., 2012. Prodúctidos Productidina y Strophalosiidina (Braquiópodos Articulados) del Devónoco de la Cordillera Cantábrica (N de España). Universidad de Oviedo, Trabajos de Geología 32, 10–62.
Search in Google Scholar Back to article
García-López S., 1987. Los conodontos y su aplicación al estudio de las divisiones cronostratigráficas mayores del Devónico Asturleonés (España). Publicaciones Especiales del Boletín Geológico y Minero de España 1–112.
Search in Google Scholar Back to article
García-López S. & Sanz-López J., 2002. Devonian to Lower Carboniferous conodont biostratigraphy of the Bernesga Valley section (Cantabrian Zone, NW Spain). [In:] S. García-López & F. Bastida (Eds): Paleozoic conodonts from northern Spain. Cuadernos del Museo Geominero 1, Madrid, 163–205.
Search in Google Scholar Back to article
Jelby M.E., Grundvåg S.A., Helland-Hansen W.A., Olaussen S. & Stemmerik L., 2020. Tempestite facies variability and storm-depositional processes across a wide ramp: Towards a polygenetic model for hummocky cross-stratification. Sedimetology 67, 742–781. https://doi.org/10.1111/sed.12671
Search in Google Scholar Back to article
Keller M., Bahlburg H., Reuther C.D. & Weh A., 2007. Flexural to broken foreland basin evolution as a result of Variscan collisional events in northwestern Spain. [In:] R.D. Hatcher, M.P. Carlson, J.H. McBride & J.R. Martínez Catalan (Eds): 4-D Framework of the Continental Crust. Geological Society of America, Memoir, 200, 1–22. https://doi.org/10.1130/2007.1200(25)
Search in Google Scholar Back to article
Nichols G., 2009. Sedimentology and stratigraphy 2nd ed., Wiley-Blackwell, Chichester, 419 pp.
Search in Google Scholar Back to article
Raven J.G.M., 1983. Conodont biostratigraphy and depositional history of the Middle Devonian to Lower Carboniferous in the Cantabrian Zone (Cantabrian Mountains, Spain). Leidse Geologische Mededelingen 52, 265–339.
Search in Google Scholar Back to article
Reineck H.E. & Singh J.B., 1975. Depositional sedimentary environments. Springer, Berlin, 439 pp.
Search in Google Scholar Back to article
Rodríguez Fernández L.R., García Alcalde J.L. & Menéndez-Álvarez J.R., 1985. La sucesión del Devónico Superior y Carbonífero Inferior en el sinclinal de Alba (León, NO de España) [The Upper Devonian and Lower Carbon-iferous succession in the Alba syncline (León, NW Spain)]. Compte Rendu X Congreso International de Estratigrafía y Geología del Carbonífero 1, 133–146.
Search in Google Scholar Back to article
Rupke, J., 1965. The Esla Nappe, Cantabrian Mountains (Spain). Leidse Geologische Mededelingen 32, 1–74.
Search in Google Scholar Back to article
Schlager W., 2005. Carbonate sedimentology and sequence stratigraphy. Society for Sedimentary Geology, Concepts in Sedimentology and Paleontology 8, 200 pp. https://doi.org/10.2110/csp.05.08
Search in Google Scholar Back to article
Smeenk Z., 1983. Devonian trilobites of the southern Cantabrian Mountains (northern Spain) with a systematic description of the Asteropyginae. Leidse Geologische Mededelingen 52, 383–440.
Search in Google Scholar Back to article
Staines H.R.E., 1985. Field geologist’s guide to lithostrati-graphic nomenclature in Australia. Australian Journal of Earth Sciences 32, 83–106.
Search in Google Scholar Back to article
Van Loevezijn G.B.S., 1986. Stratigraphy and facies of the Nocedo, Fueyo and Ermita formations (Upper Devonian to lowermost Carboniferous) in León, N Spain. Scripta Geologica 81, 1–116.
Search in Google Scholar Back to article
Van Loevezijn G.B.S., 1988. Upper Devonian to Lowermost Carboniferous concretion types and their stratigraphic significance (Cantabrian Mountains, N Spain). Trabajos de Geología 17, 57–66.
Search in Google Scholar Back to article
Van Loevezijn G.B.S., 2022. Soft-sediment deformation structures in Frasnian and Famennian tempestites and related sediments (southern Cantabrian Mountains, Spain). Zeitschrift der Deutschen Gesellschaft für Geowissenschaften 173, 403–423. https://doi.org/10.1127/zdgg/2022/0324.
Search in Google Scholar Back to article
Van Loevezijn G.B.S., 2024. Stratigraphic architecture of the Gordón Member, and its paleogeographic implications (Frasnian, Cantabrian Mountains, Spain). Boletín Geológico y Minero 135. https://doi.org/10.21701/bolgeomin/135.2/002
Search in Google Scholar Back to article
Van Loevezijn G.B.S. & Raven J.G.M., 2017. Frasnian carbonate shoals and sequence stratigraphy of the Upper Devonian series from the southern Cantabrian Mountains, northern Spain. Boletín Geológico y Minero 128, 931–961. https://doi.org/10.21701/bolgeomin.128.4.004
Search in Google Scholar Back to article
Van Loevezijn G.B.S. & Raven J.G.M., 2020. Facies patterns and depositional processes of two Frasnian mixed siliciclastic-carbonate systems in the Cantabrian Mountains, NW Spain. Geologos 26, 1–23. https://doi.org/10.2478/logos-2020-0001
Search in Google Scholar Back to article
Van Loevezijn G.B.S. & Raven J.G.M., 2021. The Upper Devonian of the river Sil area: a stratigraphic correlation between León and Asturias, northern Spain. Boletín Geológico y Minero 132, 325–354. https://doi.org/10.21701/bolgeomin.132.3.005
Search in Google Scholar Back to article
Van Loevezijn G.B.S. & Van Loevezijn Peña A.L.M., 2017. Facies cycles and sequences in the Upper Devonian of the Bernesga area. Zeitschrift der Deutschen Gesellschaft für Geowissenschaften 168, 313–339. https://doi.org/10.1127/zdgg/2017/0104
Search in Google Scholar Back to article
Van Loevezijn G.B.S., Raven J.G.M. & Pol W., 1986. The Crémenes Limestone, a late Frasnian biostrome in the Cantabrian Mountains (northwestern Spain). Neues Jahrbuch für Geologie und Paläontologie, Monatshefte 10, 599–612.
Search in Google Scholar Back to article
Weil A.B., Gutiérrez-Alonso G. & Wicks D., 2013. Investigating the kinematics of local thrust sheet rotation in the limb of an orocline: a paleomagnetic and structur al analysis of the Esla tectonic unit, Cantabrian–Asturian Arc, NW Iberia. International Journal of Earth Science 102, 43–60. https://doi.org/10.1007/s00531-012-0790-3
Search in Google Scholar Back to article
Zeller M., Verwer K., Eberli G.G., Massafero, J.L., Schwartz E. & Spalletti L., 2015. Depositional controls on mixed carbonate-siliciclastic cycles and sequences on gently inclined shelf profiles. Sedimentology 62, 2009–2037. https://doi.org/10.1111/sed.12215
Search in Google Scholar Back to article

Frasnian (Upper Devonian) lithostratigraphy of the Bernesga Valley (Cantabrian Mountains, NW Spain)

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