Morphosedimentary features and recent depositional architectural model of the Cantabrian continental margin

The northeastern South China Sea margin created by the combined action of down-slope and along-slope processes: Processes, products and implications for exploration and paleoceanography

“…The overall seismic expression of this seismic facies and its relationship to other deposits share broad similarities with seismic reflection patterns of slope gullies that have been documented throughout the world oceans (e.g., Ercilla et al, 2008;Galís et Lonergan et al, 2013). As compared with the Taiwan canyon discussed above, slope gullies do not indent the shelf edge and has a much narrower width and a much shorter length, in which no significant deposits are found along the entire length of them ( Fig.…”

“…(Viana, 2008;Salles et al, 2010;Gong et al, 2013;He et al, 2013). Many previous studies have independently focused on the understanding of down-slope gravity-driven processes or along-slope bottom (contour) processes (e.g., Hernández-Molina et al, 2006;Mulder et al, 2008;Mutti et al, 2009;Ercilla et al, 2008;García et al, 2011;Talling et al, 2012). Because of this, the interplay of down-slope and along-slope processes represents a critical and yet little known topic in the study of deep-marine sedimentation (Hernández-Molina et al, 2006Rebesco et al, 2008;Brackenridge et al, 2013;Stow et al, 2013).…”

Occurrence of pockmarks on the Ortegal Spur continental margin, Northwestern Iberian Peninsula

“…2). The relative age of deposition has been established based on the correlation with published seismic data (Murillas et al, 1990;Ercilla et al, 2008;Iglesias, 2009): the AB and Unit OS1 are Mesozoic-Eocene in age, Unit OS2 is assigned to the Miocene, and Unit OS3 corresponds to Plio-Quaternary deposits. The AB is characterized by transparent seismic facies with discontinuous reflections showing dipping and folded reflectors with occasional anticline and syncline morphologies.…”

“…Only 4.2% of the overall catchment area of the Iberian Peninsula drains to the north coast, between the GaliciaAsturias border and the French border (Uriarte et al, 2004). Assuming that the whole time period of the deposits in the study area is Plio-Quaternary, and taking into account the sedimentation model that characterized the Spanish Iberian shelves during this period (Farrán and Maldonado, 1990;Ercilla et al, 1994Ercilla et al, , 2008Lobo et al, 2002, among others), the near-surface sediment layers correspond to low-stands, paleodeltaic distributary systems or shelf-margin deltas that developed during falling and low-stand periods of sea level. The volume of sediment flooring the Ortegal Spur is relatively small levels compared to river fans in which pockmarks related to biogenic fluids have been observed, such as the Po, Rhône, Ebro and Guadalquivir rivers (Baraza and Ercilla, 1996;Maestro et al, 2002;Orange et al, 2005;García-García et al, 2006).…”

Seismic geomorphological reconstructions of Plio-Pleistocene bottom current variability at Goban Spur

“…Since the lower Pliocene, it has been involved in the formation of large Contourite Depositional Systems (CDS) all along the NE Atlantic margin. From its most proximal to most distal location, this concerns the Gulf of Cadiz CDS , 2014Llave et al, 2006Llave et al, , 2011Toucanne et al, 2007;García et al, 2009;Hanquiez et al, 2010;Roque et al, 2012), the Ortegal CDS , the Le Danois CDS (Ercilla et al, 2008;Van Rooij et al, 2010) and the Porcupine CDS (Van Rooij et al, 2007Huvenne et al, 2009).…”