Magnetostratigraphy and lithostratigraphy of the Laño vertebrate-site: Implications in the uppermost Cretaceous chronostratigraphy of the Basque-Cantabrian Region

Show simple item record Corral, José Carmelo Pueyo Morer, Emilio Luis Berreteaga, Ana Rodríguez Pintó, Adriana Sánchez, E. Pereda Suberbiola, Xavier 2020-11-16T07:44:42Z 2020-11-16T07:44:42Z 2016-01
dc.identifier.citation Cretaceous Research, 2016, vol. 57, 473-489 es_ES
dc.identifier.issn 0195-6671
dc.description.abstract Here we present the magnetostratigraphic dating of the Laño locality (Condado de Treviño, northern Iberian Peninsula), one of the most noteworthy Campanian-Maastrichtian vertebrate sites of Europe. A composite section of 75 m thickness (Laño quarry) constructed from multiple, overlapping profiles and a continuous one (Faido) have been sampled for magnetostratigraphy. Thermal demagnetization techniques were systematically applied to 161 standard specimens and allowed characterizing the characteristic remanent magnetism, mostly carried out by magnetite. The palaeomagnetic signal is slightly scattered due to variety of lithologies, but the primary character can be guaranteed, since the normal and reverse directions are pseudo antiparallel; 346, 28 (α95: 11.9°, k: 5.3) and 175, −35 (α95: 16.4°, k: 4.6). Reliable samples allowed us to build the local polarity sequence made of eight magnetozones that has been used to correlate to the Global Polarity Time Scale. The age of the lower part of the Laño-village succession is basal late Campanian (Hoplitoplacenticeras marroti ammonite zone) and fits with the long reversed zone that must correlate to Chron C33r. The pattern of magnetozones allows tracking the section up to C30r at the upper part of the profile. In this correlation, the Laño vertebrate site is regarded as latest Campanian in age as it falls within the C32n (≈72–73.5 Ma). The combined lithostratigraphic and magnetostratigraphic analyses have yielded additional conclusions regarding the vertebrate assemblages that are representative of the Late Campanian of the Iberian Peninsula, in addition to highlight an older occurrence in Europe of some vertebrate groups such as salamandrid lissamphians and anguid lizards (or amphisbaenians). es_ES
dc.description.sponsorship Museo de Ciencias Naturales de Álava, España es_ES
dc.description.sponsorship Unidad de Zaragoza, Instituto Geológico y Minero de España, España es_ES
dc.description.sponsorship Departamento de Estratigrafía y Paleontología, Universidad del País Vasco, España es_ES
dc.description.sponsorship Departamento de Ciencias de la Tierra, Universidad de Zaragoza, España es_ES
dc.description.sponsorship Departamento de Física, Universidad de Burgos, España es_ES
dc.language.iso en es_ES
dc.publisher Elsevier es_ES
dc.publisher Academic Press es_ES
dc.rights Acceso abierto es_ES
dc.subject magnetostratigraphy es_ES
dc.subject lithostratigraphy es_ES
dc.subject Campanian es_ES
dc.subject Maastrichtian es_ES
dc.subject Basque-Cantabrian basin es_ES
dc.subject Northern Spain es_ES
dc.title Magnetostratigraphy and lithostratigraphy of the Laño vertebrate-site: Implications in the uppermost Cretaceous chronostratigraphy of the Basque-Cantabrian Region es_ES
dc.type Postprint es_ES
dc.relation.publisherversion es_ES
dc.identifier.doi es_ES
dc.coverage.spatialStudy Condado de Treviño, España, Cuenca Vasco-Cantábrica es_ES

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