El surco calcarenítico intraplataforma de Desamendiorigen y evolución (Aptiense inferior, Aralar-Navarra)
- Millán Sánchez, María Isabel
- Agirrezabala Mundiñano, Luis M.
- Fernández Mendiola, Pedro Angel
- García Mondéjar, Joaquín
ISSN: 1576-5172
Year of publication: 2005
Issue Title: XV Congreso Nacional de Sedimentología y IV Coloquio de Estratigrafía y Paleogeografía del Pérmico y Triásico de España
Issue: 8
Pages: 73-76
Type: Article
More publications in: Geotemas (Madrid)
Abstract
The Sagastarri limestones from the Lower Aptian of Aralar Mountains (eastern Basque-Cantabrian region, northern Spain), mainly consist of rudist, coral and orbitolinid micrites (Urgonian facies). In Desamendi area, a calcarenitic lithosome 1 km wide and 172 m thick, within the Sagastarri unit, shows lateral changes to two platform micritic limestones, through indentation, with clinoforms up to 20 m in relief. Vertical section measurements reveal a local thickness increase from West to East. Calcarenites are interpreted to fill a sysedimentary trhrough created by local differences in subsidence rates.