Lithostratigraphic variability and boundaries of a Givetian reef unit (Cantabrian Zone, Spain)
DOI:
https://doi.org/10.21701/bolgeomin/136.4/001Keywords:
Givetian, Frasnian, Reef, CantabrianAbstract
The Portilla Formation represents one of the major Devonian reef developments of the Cantabrian Zone and is overlain by the (mainly) siliciclastic succession of the Nocedo Formation. There is no agreement concerning the definition of the Portilla-Nocedo boundary, and several subdivisions occur in the literature. In this paper, we investigate the lithostratigraphic variability of the reefal succession and the stratigraphical consequences of the various subdivisions. The review supports the merger of the reefal limestone succession as one stratigraphic unit, the Portilla Formation, and rejects the separation of the Valdoré Limestone as a basal reefal development of the overlying Nocedo Formation.
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References
Barrois, C. (1882). Recherches sur les terrains anciens des Asturias et de la Galice. Memoire la Societé géologique du Nord, 2 (1), 630 pp.
Bereskin, S.R. (1978). Subdivisión estratigráfica de la Caliza de Candás. Devónico del Noroeste de España. Boletín del Instituto de Estudios Asturianos. Suplemento de Ciencias, 23, 1-13.
Brouwer, A. (1964). Deux facies dans les Devonien des Montagnes Cantabrique Meriodionales. Brevoria Geologica Asturica, 4, 3-10.
Comte, P. (1938). Le facies du devonien superieur dans la Cordilliere Cantabrique. Courier Real l'Académie des Sciencies, 202, 337-339.
Comte, P. (1959). Recherches sur le terrains ancients de la cordillera Cantabrique. Memorias del Instituto Geológico y Minero de España, 60, 1-440.
Fernández Martínez, J.C. (1994). An example of reef development in the Middle Devonian (Candás Fm., Givetian) in the Cantabrian Mountains (NW Spain). Courier Forschungsinstitut Senckenberg, 172, 103-110.
Fernández, L.P., Fernández-Martinez, E., García Ramos, J.C., Méndez-Bedía, I. & Soto, F. (1997). A sequential approach to the study of reefal facies in the Candás and Portilla Formations (Middle Devonian) of the Cantabrian Zone (NW Spain). Boletin de la Real Sociedad Española de Historia Natural Section Geologia, 92(1-4), 23-33.
Frankenfeld, H. (1979). Kurstenbewegungen und Faziesentwicklung im Kantabrischen Gebirge (Nordspanien) vom Ende der Devonriffe (Givet/Frasne) bis zum Tournai. PhD thesis, Eberhard-Karls Universität Tübingen, 109 pp.
García Alcalde J.L., Menendez-Alvarez, I.R., García-Lopez, S. & Soto, F. (1985). El Devónico superior y el Carbonífero inferior del synclinal de Beberino (Pola de Gordón, Leon, NO, de España (1985). X Congreso International Estr. Geol. Carbon. Compte Rendu X Congreso International de Estratigrafía y Geología del Carbonífero, 1, 375-386.
García Alcalde, J.L., Carls, P., Alonso, M.V.P., Sanz López, J., Soto, F., Truyols-Massoni, M. & Valenzuela-Rios, J.I. (2002). Devonian. In: Gibbons, W. and Moreno, T. (eds), The Geology of Spain. The Geological Society, London, Bath (UK), 67-93. https://doi.org/10.1144/GOSPP.6
García Alcalde, J.L. (1995). L'évolution paléogéographique pré-Varisque de la zone Cantabrique septentrionale (Espagne). Revista Española de Paleontología, 10(1), 9-29. https://doi.org/10.7203/sjp.24084
García Alcalde, J.L. (1996). El Devónico del dominio Astur-Leonés en la zona Cantábrica (N de España). Revista Española de Paleontología, Extraordinario, 58-71. https://doi.org/10.7203/sjp.23926
García Alcalde, J.L. (2012). Prodúctidos Productidina y Strophalosiidina (Brachiópodos Articulados) del Devónico de la Cordillera Cantábrica (N de España). Universidad de Oviedo, Trabajos de Geología, 32, 10-62.
García Alcalde, J.L. (2010).Braquiópodos Devónicos de la Cordillera Cantábrica (N de España). 9) Pentamerelloides n.gen. (Pentameridina Clorindoidea) del Givetiense medio. Trabajos de Geología. 30, 421-431.
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.
García-López, S. & Sanz-López, J. (2002a). Devonian to Lower Carboniferous conodont biostratigraphy of the Bernesga Valley section (Cantabrian Zone, NW Spain). In: García- López, S. and Bastida, F. (eds), Paleozoic conodonts from northern Spain. Cuadernos del Museo Geominero, 1, Madrid, 163-205.
García-López, S. & Sanz-López, J. (2002b). The Palaeozoic succession and conodont biostratigraphy of the section between Cape Peñas and Cape Torres (Cantabrian coast NW Spain). In: García-López, S. and Bastida, F. (eds), Paleozoic conodonts from northern Spain. Cuadernos del Museo Geominero, 1, Madrid, 126-156.
International Commission on Stratigraphy, Stratigraphic Guide, Chapter 5 Lithostratigraphic Units. https://stratigraphy.org/guide/litho.
Ménendez Bedía, I., Soto, F. & Esperanza, F.M. (1994). Devonian reef types in the Cantabrian Mountains (NW Spain) and their faunal composition. Courier Forschungsinstitut Senckenberg,172, 161-183.
Mohanti, M. (1972). The Portilla Formation (Middle Devonian) of the Alba syncline, Cantabrian Mountains, prov. León, northwestern Spain: carbonate facies and rhynchonellid palaeontology. Leidse Geologische Mededelingen, 48, 135-205.
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.
Reijers, T.J.A. (1972). Facies and diagenesis of the Devonian Portilla limestone Formation between the river Esla and the Embalse de la Luna, Cantabrian Mountains, Spain. Leidse Geologische Mededelingen, 47, 163-217.
Reijers, T.J.A. (1973). Stratigraphy, sedimentology and paleogeography of Eifelian, Givetian and Frasnian strata between the river Porma and the Embalse de la Luna, Cantabrian Mountains, Spain. Geologie en Mijnbouw, 52, 115-124.
Reijers T.J.A. (1974). Hing movements influencing deposition during the Upper Devonian in the Esla area of the Cantabrian Mountains, Spain. Geologie en Mijnbouw, 53, 13-21.
Reijers, T. J. A. (1980). Sedimentary mechanisms in Spanish Devonian carbonates. Geologie en Mijnbouw, 59, 87-96.
Sanchez de la Torre, L. (1977). Guía de las sesiones de campo. Formaciones detríticas y carbonatadas del Devónico medio y superior de la Cordillera Cantabrica. VIII congreso nacional de sedimentología (Oviedo-León, julio 1977), 54 pp.
Ten Have, A.H.M. (1979). Stratigrafie en facies van de Devonische Portilla kalksteen formatie in het Somiedo-Luna gebied, Cantabrisch Gebergte, NW Spanje. Leiden University, Internal Report, 120 pp.
Truyols, J., Arbizu, M., García-Alcalde, J.L., García-López, S., Méndez-Bedía, I., Soto, F. & Truyols Massoni, M. (1990). The Asturian-Leonese Domain (Cantabrian Zone). In: Dallmeyer, R. D. and Martínez García, E. (eds), Pre-Mesozoic geology of Iberia, 10-19, Berlin-Heidelberg (Springer).
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
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.
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(3), 313-339. https://doi.org/10.1127/zdgg/2017/0104
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(4), 931-961. https://doi.org/10.21701/bolgeomin.128.4.004
Van Loevezijn, G.B.S. (2020). Forebulge dynamics and sedimentary response of an initial Variscan foreland basin; the Upper Devonian of the southern Cantabrian Mountains, N Spain. Zeitschrift der Deutschen Gesellschaft für Geowissenschaften, 171(3), 249-276. https://doi.org/10.1127/zdgg/2020/0200
Van der Baan, D. (1970). Stratigrafie van de Portilla Formatie in het oostelijke Esla gebied. Leiden University, Internal Report, 38 pp.
Van Staalduinen, C.J. (1973). Geology of the area between the Luna and Torío rivers, southern Cantabrian Mountains, NW Spain. Leidse Geologische Mededelingen, 49, 167-205.
Wheeler, H.E. & Mallory, V.S. (1953). Designation of stratigraphic units. Bulletin American Association of Petroleum Geology, 234, 2361-2365. https://doi.org/10.1306/5CEADD9D-16BB-11D7-8645000102C1865D
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