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Publications
Publications (110)
Portus was the main port of imperial Rome from the 2nd century AD to the 5th century AD, with an inner, hexagonal port (Trajan basin) and an outer port (Claudius basin) linked by a channel bounded by quays. Six sedimentary facies have been differentiated in the geological analysis of a core extracted in this channel, basically composed of poorly cl...
Gyrogonites of carophytes in the Doñana National Park: Their record in Pleistocene and Holocene sediments Characeans are an important group of aquatic macrophytes in the Doñana National Park. In this paper, we study the distribution of their gyrogonites in different environments of this protected area (temporary ponds, springs, streams, banks of th...
An integrated study including magnetostratigraphy, larger benthic foraminifera and calcareous nannofossil biostratigraphy is presented herein. This work was performed in shallow marine siliciclastics rich in larger foraminifera, around the Ypresian/Lutetian boundary in the Ésera valley (South-Central Pyrenees). Although the calcareous nannofossil c...
This paper analyzes the first systematic faunal record of the 1755 Lisbon tsunami in the Mediterranean. On the basis of sedimentological and paleontological features, the sedimentary record of a core collected in Gibraltar was divided into six sedimentary facies, with a paleoenvironmental evolution from a shallow marine paleoenviroment to an increa...
The Eocene Peñicas (Almería) and Harania (Málaga) stratigraphic sections from the Malaguide Complex (Betic Cordillera, South Spain) belonging to the Mesomediterranea Microplate from the westernmost Tethys (about-30° N and 0°–5°W according to the Eocene coordinates) have been studied. The Eocene sections cover the Cuisian to middle Lutetian deposits...
This paper presents the easternmost mineralogical and geochemical evidence of the 1755 Lisbon tsunami found in the Western Mediterranean. This multidisciplinary analysis of a sediment core obtained in Gibraltar (southern Iberian Peninsula) has allowed us to differentiate a tsunamiite from an old lagoon (The Inundation). This tsunamigenic layer has...
The multidisciplinary analysis (dating, texture, total mineralogy) of two deep cores collected in the Doñana National Park (SW Spain) allows to distinguish the main features of three tsunami deposits found in three different paleoenvironmental scenarios (TSU-1: inner area of an open lagoon; TSU-2: inner area of a restricted lagoon; TSU-3: outer are...
During the Neogene, the Betic Strait was one of the gateways that connected the Atlantic Ocean and the Mediterranean Sea. In this paper, we have analyzed the ostracod faunas of samples collected from sediments crossed by a long borehole in southwestern Spain. These sediments were deposited in the Betic strait just before the Messinian Salinity Cris...
A study of the paleoenvironmental evolution of the middle Eocene platforms recognized in the westernmost Tethys has been carried out in the well exposed middle Eocene succession from Sierra Espuña-Mula basin (Betic Cordillera, S Spain). Eight microfacies (Mf1 to Mf8) have been recognized, based mainly on fossil assemblages (principally larger benth...
This paper studies the benthic foraminifera from a continuous core extracted in the Doñana National Park (SW Spain). In this core, the foraminiferal assemblages confirm the presence of a Late Holocene lagoon (historically so-called Lacus Ligustinus) during the Roman period, about 2000 years ago. The more open, deepest areas of this lagoon were domi...
The elemental content-mainly trace elements-of samples from two boreholes (PLN, CM) with evidence of tsunamiites, located in the Doñana National Park (SW Spain), were studied. The geochemical variations of the REE, LILE, HFSE, and other elements (Al, Ti, S, Na, Br, Sc, Co, Cr) were interpreted according to the mineralogy present in the samples. The...
During the Roman period (3rd century BC-5th century AD), the areas located near the present-day mouth of the Guadalquivir River were occupied by a lagoon with marine connection, according to the paleoenvironmental interpretation of benthic foraminiferal assemblages obtained in a core extracted in the Doñana National Park. The inner zones of this la...
A multidisciplinar analysis of sediments collected in different environments of the Doñana National Park (Guadalquivir estuary, SW Spain) provides an overview of the textural, mineralogical and physico-chemical parameters that control the distribution of benthic foraminifera in this Biosphere Reserve. These microorganisms are absent in the fine qua...
The Doñana National Park is a Biosphere Reserve located within the estuary of the Guadalquivir River (SW Spain). It is mainly composed of extensive fluvio-tidal marshes partially protected by an elongated sandy spit. Three phases have been distinguished in the late Holocene evolution of this spit based on textural, geochemical, palaeontological and...
Estuaries are very sensitive ecosystems to human activities and the natural evolution of their drainage basins located upstream. Pollution derived from human activities, such as historical mining or recent industrial wastes, can significantly affect their environmental quality. This paper analyzes the silver and copper contents of four cores extrac...
The analysis of shell deposits eroded by a ebb-tide channel on Saltés Island (Tinto-Odiel estuary, SW Spain) resulted in the identification of a new shell midden, associated with the activity of a nearby Roman factory over the 4th-5th centuries CE. This midden differs from other old shell deposits (sandy tidal flats, cheniers, washover fans) in sev...
The southwestern Atlantic coast of the Iberian Peninsula presents an important Roman heritage that includes
numerous fish-salting workshops, with an industrial activity that went on for almost a millennium
(1st century BC-7th century AD). Nevertheless, a future broad research is still necessary to determine the
geologic substratum on which they are...
During the late Neogene, the Mediterranean Sea was connected with the Atlantic Ocean by two straits: the northern Betic Strait and the southern Rifian Strait. In this paper, we analyze the main palaeoenviromental changes produced in the western sector of the Betic Strait during the late Tortonian–middle Messinian (7.4–6 Ma). The temporal evolution...
El análisis multidisciplinar de un perfil descubierto por las tormentas invernales en el litoral del Parque Nacional de Doñana ha permitido reconstruir la evolución de su sector occidental durante el Holoceno superior. Se han definido 3 fases que reflejan el paso desde una marisma de aguas salobres (FA-1) a una laguna de aguas dulces transformada e...
Three zones are differentiated in the marine sector of the Guadalquivir estuary (SW Spain), according to a multidisciplinary analysis (water, sediment, foraminifera). Both salinities and pH increase from the innermost areas (zone 1: Ammonia tepida) to the mouth (zone 3: Ammonia beccarii), with an intermediate zone 2 (Ammonia beccarii-Triloculina tr...
Throughout most of the 19th and 20th centuries, studies of Paleogene stratigraphy carried out in the Iberian Peninsula lagged behind those of northern Europe. More recently, however, Iberian contributions on this topic have increased in both number and importance. This is highlighted by the definition of several global stratotype sections and point...
Fossil associations from the middle and upper Eocene (Bartonian and Priabonian) sedimentary succession of the Pamplona Basin are described. This succession was accumulated in the western part of the South Pyrenean peripheral foreland basin and extends from deep-marine turbiditic (Ezkaba Sandstone Formation) to deltaic (Pamplona Marl, Ardanatz Sands...
Synopsis of the PhD. Thesis of Toscano (2016) who studies marine vertebrates from the Neogene of the
province of Huelva (SW of Spain), in the passive margin of the Guadalquivir basin. They have been analyzed and
described almost 6000 fossils belonging to 115 taxa, including Holocephalans, Chondrichthyes, Osteichthyes, Sea Turtles, Birds, Mysticetes...
Synopsis of the PhD. Thesis of Toscano (2016) who studies marine vertebrates from the Neogene of the
province of Huelva (SW of Spain), in the passive margin of the Guadalquivir basin. They have been analyzed and
described almost 6000 fossils belonging to 115 taxa, including Holocephalans, Chondrichthyes, Osteichthyes, Sea Turtles, Birds, Mysticetes...
Carbonate lithofacies have been commonly used as paleoclimatic indicators although classifications of carbonate deposits based on temperature and climate ignore a wide spectrum of other controlling factors that should be taken into account in order to discriminate between warm and temperate marine paleoenvironments. Therefore, the analysis of other...
GONZÁLEZ-REGALADO, M.L., TOSQUELLA, J. ABAD, M., TOSCANO, A., RUIZ, F. (2013). Yacimientos fosilíferos del Neógeno de la Provincia de Huelva. Servicio de Publicaciones de la Universidad de Huelva, Huelva, 87 pp. ISBN: 978-84-15633-57-0
http://www.youtube.com/watch?v=dJKpYEdRkUk
GONZÁLEZ-REGALADO, M.L., TOSQUELLA, J., TOSCANO, A., ABAD, M., RUIZ, F. (2012). Virtualización de yacimientos del Plioceno de la provincia de Huelva: hacia una puesta en valor del Patrimonio Paleontológico en entornos educativos diferenciados I. En: Nuevos estándares en la innovación docente en Historia N...
http://www.youtube.com/watch?v=808qVTKgyKA
Virtualization of niebla formation sites (upper miocene) in the Huelvaprovince: valuating the paleontological heritage in differentiate educativesettings II
The paleontological heritage from the Neogene in the province of Huelva isone of the most important in Spain and it is considered a European reference...
ABAD, M., RUIZ, F., MARTIN-CLOSAS, C., TOSQUELLA, J., TOSCANO, A., GONZÁLEZ-REGALADO, M.L. (2011). A singular Miocene paleobotanic record in deltaic sequences of Nord-betic Corridor (Guadalquivir Basin, South of Spain). En: Abstract Book RCMNS-RCANS Colloquium. Climate changes, biovents and geochronology in the Atlantic and Mediterranean over the l...
The GSSP for the base of the Lutetian Stage (early/ middle Eocene boundary) is defined at 167.85 metres in the Gorrondatxe sea-cliff section (NW of Bilbao city, Basque Country, northern Spain; 43º22'46.47" N, 3º 00' 51.61" W). This dark marly level coincides with the lowest occurrence of the calcareous nannofossil Blackites inflatus (CP12a/b bounda...
The GSSP for the base of the Lutetian Stage (early/middle Eocene boundary) is defined at 167.85 metres in the Gorrondatxe sea-cliff section (NW of Bilbao city, Basque Country, northern Spain; 43°22'46.47"N, 3°00'51.61" W). This dark marly level coincides with the lowest occurrence of the calcareous nannofossil Blackites inflatus (CP12a/b boundary),...
An integrated bio-, magneto- and cyclostratigraphic study of the Ypresian/Lutetian (Early/Middle Eocene) transition along the Otsakar section resulted in the identification of the C22n/C21r chron boundary and of the calcareous nannofossil CP12a/b zonal boundary; the latter is the main correlation criterion of the Lutetian Global Stratotype Section...
This paper analyzes evidences of predation observed in ostracod populations collected in the southwestern Spanish shelf (0–70 m depth). Examination of seventy-two samples and almost 17,300 specimens allowed recovering more than 135 bored valves and carapaces. Percentages of bored specimens are very low (< 2%), with the highest values in isolated sa...
If the ongoing phenomenon of global warming prevails, three main consequences are expected in tropical seas: a higher sea level, a reduction in coral reefs and more intense cyclones. What will shallow-marine carbonate systems be like? Insights can be gained from the Pyrenean Urbasa–Andia Formation, a transgressive heterozoan-like foralgal (larger f...
In addition to the mapping, a comprehensive stratigraphic study of outcropping Late Cretaceous, Paleocene, and Early Eocene series was carried out. This study was supported by analyses of the larger foraminifera faunas included in these series as dating and correlation tools and by magnetostratigraphic studies. Special attention was paid to the Pal...
Postcranial remains of Sirenia from the early Middle Eocene (late Lutetian) Urbasa-Andia Formation of Navarre (Western Pyrenees) are described. The material consists of two partial atlas vertebrae, one humerus and several dorsal ribs (from Arrasate, Urbasa plateau), and partial dorsal ribs (from Lezaun, Andia plateau). The morphology of the fossils...
Cretaceous charophytes and Palaeocene larger foraminifera are facies-linked microfossils used to perform
biostratigraphic correlation between distant basins, in Eurasia (charophytes) or the whole Tethys (larger
foraminifera). The capability of these organisms for dispersal and colonization is analysed and appears to
be dependent both on palaeoecolo...
The Gorrondatxe section, a prospective Lutetian Global Stratotype Section and Point (GSSP), has recently been used as the master reference section to reassess the correlation between Eocene magnetostratigraphic and calcareous planktonic biostratigraphic scales. However, the exact calibration of some events remained ill defined, as they were thought...
The Ilerdian Stage was created by Hottinger and Schaub in 1960 to accommodate a significant phase in the evolution of larger foraminifera not recorded in the northern European basins, and has since been adopted by most researchers working on shallow marine early Paleogene deposits of the Tethys domain. One of the defining criteria of the stage is a...
The Early/Middle Eocene (Ypresian/Lutetian) transition is represented by a hiatus in many North European sections, including those in which the classic stratotypes were originally defined. However, the Global Stratotype Section and Point of the Lutetian Stage, which is still pending definition, should be placed at a globally correlatable event incl...
The Gorrondatxe section, a prospective Lutetian Global Stratotype Section and Point (GSSP), has recently been used as the master reference section to reassess the correlation between Eocene magnetostratigraphic and calcareous planktonic biostratigraphic scales. However, the exact calibration of some events remained ill defined, as they were thought...
In this paper, we present an integrated study of a 115-m-thick section that spans the Ypresian/Lutetian boundary at Agost (Betic Cordillera, SE Spain). Our study includes magnetostratigraphic results and biostratigraphic and palaeoenvironmental data derived from planktic foraminifera, small and larger benthic foraminifera, and calcareous nannofossi...
Thirteen Lower–Middle Eocene (Ypresian–Lutetian) successions, including the Gorrondatxe section in the western Pyrenees, show biomagnetostratigraphic correlation schemes that do not agree with the current standard framework. The main discrepancy concerns the position of the boundary between planktonic foraminiferal Zones P9 (=E7, approximately) and...
Thirteen Lower–Middle Eocene (Ypresian–Lutetian) successions, including the Gorrondatxe section in the western Pyrenees, show biomagnetostratigraphic correlation schemes that do not agree with the current standard framework. The main discrepancy concerns the position of the boundary between planktonic foraminiferal Zones P9 (=E7, approximately) and...
One of the Paleogene Stage boundaries still needing official definition is the Ypresian/Lutetain (Early- Middle Eocene) boundary. With the aim of contributing to attain this definition, a high-resolution multidisciplinary study, including physical stratigraphy (lithostratigraphy, sequence stratigraphy and magnetostratigraphy) and biostratigraphy (c...
The Gorrondatxe beach section is part of a 2300 m thick lower Ypresian upper Lutetian deep-water marine succession and contains the most extensive Ypresian/Lutetian boundary interval so far reported. The entire 700 m thick upper-most Ypresian-lower Lutetian succession shows a good magnetic signal and is rich in well-preserved calcareous planktonic...
Numerous and large vertically extensive specimens of Conichnus conicus are described from the Tortonian deposits of the central Guadalquivir Basin (SW Spain). These burrowing structures form a low bioturbation index of the ichnofabric, which allows one to infer the original depositional setting. Both ichnological and sedimentological features sugge...
This paper analyzes the lithostratigraphic features and the ostracode associations of the Tortonian deposits located in the western and central sectors of the Guadalquivir basin (S Spain). Eight facies associations are defined (FA-1 to FA-8), being deposited in fluvial to upper bathyal paleoenvironments. The ostracofaune confirms the Tortonian age...
Sirenian vertebrae and ribs have been recently discovered from two Middle Eocene localities of the Pamplona Basin, Navarre (western Pyrenees). These outcrops correspond to different lower Bartonian lithostratigraphic units: the lower part of the Pamplona Marl Formation (Uztarrotz site) and the upper part of the Ardanatz Sandstone (Ardanatz site). T...
Along the northwestern foreland margin of the Guadalquivir Basin, Southern Spain, various deltaic systems were developed during the Tortonian as a result of the interplay between the sea level fluctuations and the continental sediment supply. Three sectors were distinguished with distinct characteristics of the depositional environments, as recorde...
The central sector of the northern foreland margin of the Guadalquivir Basin shows good examples of transgressive erosion surfaces, recognisable along all its extension. In the studied area (Villanueva del Rio y Minas, Sevilla) theses surfaces allow us to identify different erosion levels and various morphological structures linked to such surfaces...
The analysis of the ostracod assemblages collected in the lower glauconitic horizon of the Arcillas de Gibraleon Formation permits to delimitate two levels: a) Basal level, with the presence of infralittoral, outer platform and even bathyal species, indicative of a condensed section with the evolution from subaerial environments to outer platform e...
The Guadalquivir foreland basin, located between the Iberian basement northward and tho Betic orogen to the South, represents the western sector of the earlier foredeep basin of the Betic Cordillera. Along the northern foreland margin, the sedimentary fill of this basin includes a Tortonian Basal Transgressive Complex (BTC), composed of five intern...
