Sedimentary architecture of a prograding oolitic-siliciclastic wedge: Response to changes in wave-base oscillation (Kimmeridgian, Iberian Basin)
Resumen: A detailed facies and sequential architectural analysis has been carried out along the wedge-shaped shallow marine cross-bedded oolitic-siliciclastic Ricla Member (Kimmeridgian, Northern Iberian Basin). The obtained results are based on fieldwork along the 4 × 1 km continuous outcrops with the use of high-resolution photomosaics and drone-made videos, which have led to a precise and extensive facies reconstruction. Three main facies that are laterally related (A to B to C) in down-dip direction have been differentiated, which correspond to the topset, foreset and bottomset parts of a sloping depositional surface. Sedimentation was controlled by sweeping drift and downwelling storm-induced currents causing avalanching processes, with the deep action of oscillatory currents. The sedimentary architecture consists in 5 successive units composed by several sub-units, arranged according to different stacking patterns, which reflect the sedimentary response to wave-base oscillations superimposed to the regressive part of a third-order transgressive-regressive cycle. The sedimentological features indicate that this unit, which has been previously interpreted as a dune complex fit with an infralittoral prograding wedge model, as it is observed in geographically close and stratigraphically similar units. The Ricla Member is therefore regarded as an example of a well-exposed grain-supported unit with broad potential application to other prograding grain-dominated lithosomes that do not conform to the traditional sand shoal model.
Idioma: Inglés
DOI: 10.1016/j.marpetgeo.2018.05.032
Año: 2018
Publicado en: MARINE AND PETROLEUM GEOLOGY 96 (2018), 113-127
ISSN: 0264-8172

Factor impacto JCR: 3.538 (2018)
Categ. JCR: GEOSCIENCES, MULTIDISCIPLINARY rank: 39 / 195 = 0.2 (2018) - Q1 - T1
Factor impacto SCIMAGO: 1.459 - Economic Geology (Q1) - Geology (Q1) - Stratigraphy (Q1) - Oceanography (Q1) - Geophysics (Q1)

Financiación: info:eu-repo/grantAgreement/ES/DGA/H54-Grupos Consolidados
Financiación: info:eu-repo/grantAgreement/ES/MINECO-FEDER/CGL2017-85038-P
Tipo y forma: Article (PostPrint)
Área (Departamento): Área Estratigrafía (Dpto. Ciencias de la Tierra)

Creative Commons You must give appropriate credit, provide a link to the license, and indicate if changes were made. You may do so in any reasonable manner, but not in any way that suggests the licensor endorses you or your use. You may not use the material for commercial purposes. If you remix, transform, or build upon the material, you may not distribute the modified material.


Exportado de SIDERAL (2020-01-17-21:59:13)

Este artículo se encuentra en las siguientes colecciones:
Articles



 Record created 2019-06-07, last modified 2020-01-17


Postprint:
 PDF
Rate this document:

Rate this document:
1
2
3
 
(Not yet reviewed)