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Departamento de Ciencias de la Tierra y del Medio Ambiente, Universidad de Alicante, Apdo. Correos 99, 03080 Alicante, Spain
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- PublicationRestrictedPrimeros datos bioestratigráficos de los grupos evaporíticos de la Cuenca de Fortuna (Cordillera Bética)(2007)
; ; ; ; ; ; ; ;Tent-Manclús, J. E.; Universidad de Alicante, Departamento de Ciencias de la Tierra y del Medio Ambiente. Apto. 99. 03080 San Vicente del Raspeig. Alicante ;Lancis, C.; Universidad de Alicante, Departamento de Ciencias de la Tierra y del Medio Ambiente. Apto. 99. 03080 San Vicente del Raspeig. Alicante ;Soria, J. M.; Universidad de Alicante, Departamento de Ciencias de la Tierra y del Medio Ambiente. Apto. 99. 03080 San Vicente del Raspeig. Alicante ;Dinarès-Turell, J.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione Roma2, Roma, Italia ;Estévez, A.; Universidad de Alicante, Departamento de Ciencias de la Tierra y del Medio Ambiente. Apto. 99. 03080 San Vicente del Raspeig. Alicante ;Caracuel, J. A.; Universidad de Alicante, Departamento de Ciencias de la Tierra y del Medio Ambiente. Apto. 99. 03080 San Vicente del Raspeig. Alicante ;Yébenes, A.; Universidad de Alicante, Departamento de Ciencias de la Tierra y del Medio Ambiente. Apto. 99. 03080 San Vicente del Raspeig. Alicante; ; ; ; ; ; The present work offers the first biostratigraphic calibration based on calcareous nannoplankton of the three evaporitic assemblages in the Rio Chicamo section. The A. primus FAD is registered at the upper part of the Sanel marls, above the lower gypsum, and bellow the Tale gypsum. The A. delicatus FAD, and the A. amplificus FAD occurs in the lower and upper part of the Chicamo Cycles, respectively, which allow to calibrate the Chicamo Cycles reversal as the chron C3Ar. The Tortonian/Messinian boundary is found at the Tale gypsum.112 21 - PublicationRestrictedThe Messinian–early Pliocene stratigraphic record in the southern Bajo Segura Basin (Betic Cordillera, Spain): Implications for the Mediterranean salinity crisis(2008-01-30)
; ; ; ; ; ; ; ; ;Soria, J. M.; Departamento de Ciencias de la Tierra y del Medio Ambiente, Universidad de Alicante, Apdo. Correos 99, 03080 Alicante, Spain ;Caracuel, J. E.; Departamento de Ciencias de la Tierra y del Medio Ambiente, Universidad de Alicante, Apdo. Correos 99, 03080 Alicante, Spain ;Corbí, H.; Departamento de Ciencias de la Tierra y del Medio Ambiente, Universidad de Alicante, Apdo. Correos 99, 03080 Alicante, Spain ;Dinarès-Turell, J.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione Roma2, Roma, Italia ;Lancis, C.; Departamento de Ciencias de la Tierra y del Medio Ambiente, Universidad de Alicante, Apdo. Correos 99, 03080 Alicante, Spain ;Tent-Manclús, J. E.; Departamento de Ciencias de la Tierra y del Medio Ambiente, Universidad de Alicante, Apdo. Correos 99, 03080 Alicante, Spain ;Viseras, C.; Departamento de Estratigrafía y Paleontología, Universidad de Granada, Campus de Fuente Nueva s/n, 18071 Granada, Spain ;Yébenes, A.; Departamento de Ciencias de la Tierra y del Medio Ambiente, Universidad de Alicante, Apdo. Correos 99, 03080 Alicante, Spain; ; ; ; ; ; ; The analysis of the Messinian and Pliocene stratigraphy of the southern Bajo Segura Basin (Betic Cordillera, Spain) has revealed three highstand sedimentary phases (Messinian I, Messinian II, and Pliocene) bounded by two lowstand erosional surfaces (intra-Messinian and end-Messinian unconformities). The Messinian I highstand phase is characterized by the progradation of coastal and shallow marine sandstones (La Virgen Fm) over slope and pelagic-basin marls (Torremendo Fm). After this first phase, a fall in sea level brought about the intra-Messinian unconformity, a subaerial erosional surface with local accumulations of karstic breccias and caliche-like carbonate crusts. The Messinian II highstand phase is represented by sandy beaches and muddy lagoons (Garruchal Fm) correlative with shallow marine evaporites (San Miguel Fm); this second phase records the intra-Messinian reflooding of the basin, which characterizes the salinity crisis in the marginal basins of the Mediterranean. A new sea-level fall resulted in the end-Messinian unconformity, of which the most significant feature is the presence of a broad palaeovalley, c. 200 m deep, which, along its course, completely eroded the deposits of the Messinian II phase and part of the deposits of the Messinian I phase. The Pliocene highstand phase begins with coastal and shallow marine conglomerates and sandstones (La Pedrera Fm) which fill the deep part of the above-mentioned palaeovalley. These bottom deposits evolved gradually upwards towards pelagic marls (Hurchillo Fm), over which shallow marine and coastal sandstones prograded (Rojales Fm). This third phase records the flooding of the basin at the beginning of the Pliocene, when the salinity crisis ended in the marginal basins of the Mediterranean. The combination of calcareous nannoplankton biostratigraphy and magnetostratigraphy has confirmed that both the end of the sedimentation of the Messinian I phase, as well as the two lowstand erosional surfaces (intra- and end-Messinian unconformities) and also the onset of the Pliocene phase occurred in the chron C3r (c. 5.9–5.2 Ma). Under the assumption of the classical model of a desiccated deep basin, either of the two aforementioned erosional surfaces, or even both, could be correlative with the evaporites deposited in the abyssal parts of the Mediterranean.221 30 - PublicationRestrictedNannoplankton and planktonic foraminifera biostratigraphy of the eastern Betics during the Tortonian (SE Spain)(2010)
; ; ; ; ; ; ;Lancis, C.; Universidad de Alicante, Departamento de Ciencias de la Tierra y del Medio Ambiente. Aptdo. 99. 03080 San Vicente del Raspeig, Alicante ;Tent-Manclús, J. E.; Universidad de Alicante, Departamento de Ciencias de la Tierra y del Medio Ambiente. Aptdo. 99. 03080 San Vicente del Raspeig, Alicante ;Soria, J. M.; Universidad de Alicante, Departamento de Ciencias de la Tierra y del Medio Ambiente. Aptdo. 99. 03080 San Vicente del Raspeig, Alicante ;Corbí, H.; Universidad de Alicante, Departamento de Ciencias de la Tierra y del Medio Ambiente. Aptdo. 99. 03080 San Vicente del Raspeig, Alicante ;Dinarès-Turell, J.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione Roma2, Roma, Italia ;Yébenes, A.; Universidad de Alicante, Departamento de Ciencias de la Tierra y del Medio Ambiente. Aptdo. 99. 03080 San Vicente del Raspeig, Alicante; ; ; ; ; The Serravallian-Tortonian boundary was a time of strong tectonic activity in the Betic Cordillera. The Early Tortonian sediments continue to be under debate because no clear fossil attributions are available. These sediments have been assigned an Early Tortonian age by indirect stratigraphic criteria or by the absence of fossil content older or younger in age. The present work documents the Les Moreres- Albatera composite section, probably the most complete section of the Tortonian age in the Betic Cordillera, despite a major time gap of about 1 Ma due to an intra-Tortonian tectonic event. The section has two limestone units at the bottom (El Castellà) and the top (Las Ventanas) and two intermediate marly units, the lower Les Moreres and the upper Galería de los Suizos divided by the Raya del Búho Conglomerate. The calcareous nannoplankton biozones from CN5b/NN7 to CN9a/NN11a (Okada & Bukry, 1980; Martini, 1971) have been identified, as have the planktonic foraminifera biozones from MMi9 to MMi12a (Lourens et al. 2004). The calcareous nannoplankton biostratigraphy has allowed the identification of a time gap that includes the upper part of the CN7/NN9 biozones to the lower part of the CN9a/NN11a (Okada &Bukry, 1980; Martini, 1971). The integrated palaeomagnetic and biostratigraphic study of Albatera section has allowed to calibrate the C4r.1r/C4n.2n chron boundary.262 37 - PublicationRestrictedLa sección de San Miguel de Salinas (Cuenca del Bajo Segura). Significado paleoambiental de las asociaciones de foraminíferos en relación con la Crisis de Salinidad del Messiniense(2009)
; ; ; ; ; ; ; ; ;Corbí, H.; Departamento Ciencias de la Tierra y del Medio Ambiente, Universidad de Alicante, Apdo. 99, San Vicente del Raspeig, 03080 Alicante ;Caracuel, J. E.; Departamento Ciencias de la Tierra y del Medio Ambiente, Universidad de Alicante, Apdo. 99, San Vicente del Raspeig, 03080 Alicante ;Dinarès-Turell, J.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione Roma2, Roma, Italia ;Lancis, C.; Departamento Ciencias de la Tierra y del Medio Ambiente, Universidad de Alicante, Apdo. 99, San Vicente del Raspeig, 03080 Alicante ;Pina, J. A.; Departamento Ciencias de la Tierra y del Medio Ambiente, Universidad de Alicante, Apdo. 99, San Vicente del Raspeig, 03080 Alicante ;Soria, J. M.; Departamento Ciencias de la Tierra y del Medio Ambiente, Universidad de Alicante, Apdo. 99, San Vicente del Raspeig, 03080 Alicante ;Tent-Manclús, J. E.; Departamento Ciencias de la Tierra y del Medio Ambiente, Universidad de Alicante, Apdo. 99, San Vicente del Raspeig, 03080 Alicante ;Yébenes, A.; Departamento Ciencias de la Tierra y del Medio Ambiente, Universidad de Alicante, Apdo. 99, San Vicente del Raspeig, 03080 Alicante; ; ; ; ; ; ; In the composite section of San Miguel de Salinas the following synthems are represented: MI (preevaporitic Messinan), MII (syn-evaporitic Messinian) and P (post-evaporitic Pliocene). The foraminiferal assemblages of these synthems have been studied in order to reveal the palaeoenvironmental changes related to the Mediterranean Salinity Crisis. The change between MI and MII synthems is characterized by the reduction of the foraminiferal biodiversity. Synthem MII records palaeoenvironmental stress related to the evaporitic deposition during the Salinity Crisis. Synthem P marks an abrupt increase of the foraminiferal biodiversity in coincidence with the Pliocene reflooding of the Mediterranean Sea.123 25 - PublicationRestrictedThe Bajo Segura Basin (SE Spain): implications for the Messinian Salinity Crisis in the Mediterranean margins(2008-12)
; ; ; ; ; ; ; ;Soria, J. M.; Departamento de Ciencias de la Tierra y del Medio Ambiente, Universidad de Alicante, Apdo. Correos 99, 03080 Alicante, Spain ;Caracuel, J. E.; Departamento de Ciencias de la Tierra y del Medio Ambiente, Universidad de Alicante, Apdo. Correos 99, 03080 Alicante, Spain ;Corbí, H.; Departamento de Ciencias de la Tierra y del Medio Ambiente, Universidad de Alicante, Apdo. Correos 99, 03080 Alicante, Spain ;Dinarès-Turell, J.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione Roma2, Roma, Italia ;Lancis, C.; Departamento de Ciencias de la Tierra y del Medio Ambiente, Universidad de Alicante, Apdo. Correos 99, 03080 Alicante, Spain ;Tent-Manclús, J. E.; Departamento de Ciencias de la Tierra y del Medio Ambiente, Universidad de Alicante, Apdo. Correos 99, 03080 Alicante, Spain ;Yébenes, A.; Departamento de Ciencias de la Tierra y del Medio Ambiente, Universidad de Alicante, Apdo. Correos 99, 03080 Alicante, Spain; ; ; ; ; ; The analysis of the Messinian and Pliocene stratigraphy of the Bajo Segura Basin (a marginal basin of the western Mediterranean) has revealed three synthems deposited in a high sea-level context: T-MI (late Tortonian-Messinian), MII (Messinian), and P (early Pliocene), bounded by two lowstand erosional surfaces (intra-Messinian and end-Messinian unconformities). With respect to the salinity crisis, we propose the following series of events: 1) pre-evaporitic or pre-crisis phase (T-MI synthem); 2) first sea-level fall and subaerial exposure (intra-Messinian unconformity), possibly related to the precipitation of the Lower Evaporites; 3) syn-evaporitic phase (MII synthem), recorded both by selenitic gypsum (Upper Evaporites) as well as by lagoon deposits (Lago-Mare); 4) second sea-level fall and subaerial exposure (end-Messinian unconformity), characterized by deeply incised palaeovalleys; and 5) postevaporitic or post-crisis phase (P synthem), which coincides with the definitive restoration of open marine conditions in the basin. A combined biostratigraphic and magnetostratigraphic study revealed that all the events linked to the salinity crisis (from the end of the pre-evaporitic phase to the beginning of the post-evaporitic phase) occurred within the chron C3r (c. 5.9-5.2 Ma).181 35 - PublicationRestrictedNannoplankton biostratigraphic calibration of the evaporitic events in the Neogene Fortuna Basin (SE Spain)(2010)
; ; ; ; ; ; ; ; ;Lancis, C.; Universidad de Alicante, Departamento de Ciencias de la Tierra y del Medio Ambiente, Apto. 99, 03080 San Vicente del Raspeig, Alicante, Spain ;Tent-Manclús, J.; Universidad de Alicante, Departamento de Ciencias de la Tierra y del Medio Ambiente, Apto. 99, 03080 San Vicente del Raspeig, Alicante, Spain ;Soria, J.; Universidad de Alicante, Departamento de Ciencias de la Tierra y del Medio Ambiente, Apto. 99, 03080 San Vicente del Raspeig, Alicante, Spain ;Caracuel, J.; Universidad de Alicante, Departamento de Ciencias de la Tierra y del Medio Ambiente, Apto. 99, 03080 San Vicente del Raspeig, Alicante, Spain ;Corbí, H.; Universidad de Alicante, Departamento de Ciencias de la Tierra y del Medio Ambiente, Apto. 99, 03080 San Vicente del Raspeig, Alicante, Spain ;Dinarès-Turell, J.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione Roma2, Roma, Italia ;Estévez, A.; Universidad de Alicante, Departamento de Ciencias de la Tierra y del Medio Ambiente, Apto. 99, 03080 San Vicente del Raspeig, Alicante, Spain ;Yébenes, A.; Universidad de Alicante, Departamento de Ciencias de la Tierra y del Medio Ambiente, Apto. 99, 03080 San Vicente del Raspeig, Alicante, Spain; ; ; ; ; ; ; The Fortuna Basin is an example of a marginal Mediterranean basin with evaporitic sedimentation during the Late Tortonian and Messinian. This basin shows an early restriction event before the main Messinian Salinity Crisis (MSC) that allows the Tortonian Salinity Crisis (TSC) to be proposed as a tectonic uplift event isolating the eastern Betic basins. Four evaporitic events are present in the central part of the Fortuna Basin, from bottom to top: Los Baños Marls Formation (composed by Fenazar Conglomerate Bed, Lower Gypsum Member [Mb] and Sanel Mb), Tale Gypsum Formation (Fm), Chicamo Diatomites and Gypsum Cycles Fm, and Rambla Salada Gypsum Fm. The present work documents the first biostratigraphic dating based on calcareous nannoplankton of these events. The lowest occurrence (LO) of Amaurolithus primus is registered at the upper part of the Sanel Mb, below the Tale Gypsum Fm. The LOs of Amaurolithus delicatus and Reticulofenestra rotaria, which mark the base of the Messinian, occur in the lower part of the Chicamo Cycles Fm, above the Tale Gypsum Fm, the Triquetrorhabdulus rugosus-Nicklithus amplificus integrate form and the LO of Nicklithus cf. amplificus in the upper part of the Chicamo Cycles Fm. Taking into account these results, a new calibration of the available magnetostratigraphic data is presented: the Chicamo Cycles Fm were formed during the reverse chron C3Ar and the Tortonian-Messinian boundary should be found within the Tale Gypsum Fm or near the top of the Sanel Mb. The onset of the TSC, the first restriction phase of the Fortuna Basin, is represented by the Fenazar Conglomerate Bed, bottom of the Los Baños Fm, and not by the Tale Gypsum Fm, as previously considered.186 25 - PublicationRestrictedThe Tortonian salinity crisis in the Fortuna Basin (southeastern Spain): Stratigraphic record, tectonic scenario and chronostratigraphy(2008-07)
; ; ; ; ; ; ; ;Tent-Manclús, J. E.; Departamento de Ciencias de la Tierra y del Medio Ambiente, Universidad de Alicante, Apto. 99, 03080 San Vicente del Raspeig, Alicante, Spain ;Soria, J. M.; Departamento de Ciencias de la Tierra y del Medio Ambiente, Universidad de Alicante, Apto. 99, 03080 San Vicente del Raspeig, Alicante, Spain ;Estévez, A.; Departamento de Ciencias de la Tierra y del Medio Ambiente, Universidad de Alicante, Apto. 99, 03080 San Vicente del Raspeig, Alicante, Spain ;Lancis, C.; Departamento de Ciencias de la Tierra y del Medio Ambiente, Universidad de Alicante, Apto. 99, 03080 San Vicente del Raspeig, Alicante, Spain ;Caracuel, J. E.; Departamento de Ciencias de la Tierra y del Medio Ambiente, Universidad de Alicante, Apto. 99, 03080 San Vicente del Raspeig, Alicante, Spain ;Dinarès-Turell, J.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione Roma2, Roma, Italia ;Yébenes, A.; Departamento de Ciencias de la Tierra y del Medio Ambiente, Universidad de Alicante, Apto. 99, 03080 San Vicente del Raspeig, Alicante, Spain; ; ; ; ; ; The Neogene Fortuna and Bajo Segura basins are located on the northeastern end of the Trans-Alborán Shear Zone (TASZ), on the eastern Betic cordillera. The stratigraphic study of the infilling of these basins has shown two major sedimentary discontinuities. The first one, represented by an erosive surface separating open marine marls from an overlying coastal conglomeratic unit, is linked to the onset of the activity along the TASZ, which in this area indicates the beginning of the Abanilla Thrust emplacement. In the Fortuna Basin, the Tortonian salinity crisis, registered over this older first discontinuity, was therefore related to tectonic processes of the eastern portion of the cordillera and consequently would not have an expression in the western basins. The age of the Tortonian Salinity Crisis has been established with nannofossil biostratigraphy as Latest Tortonian at a somewhat lower stratigraphic position than previously recognized. The second sedimentary discontinuity was developed in relation with the known Mediterranean-wide Messinian salinity crisis.170 26 - PublicationRestrictedEstratigrafía y biomagnetoestratigrafía del Messiniense en la sección del Garruchal (Cuenca del Bajo Segura). Implicaciones para la crisis de salinidad del Mediterráneo(2007)
; ; ; ; ; ; ; ;Soria, J. M.; Departamento de Ciencias de la Tierra y del Medio Ambiente. Universidad de Alicante. Apdo. Correos 99, 03080 Alicante. ;Caracuel, J. E.; Departamento de Ciencias de la Tierra y del Medio Ambiente. Universidad de Alicante. Apdo. Correos 99, 03080 Alicante. ;Corbi, H.; Departamento de Ciencias de la Tierra y del Medio Ambiente. Universidad de Alicante. Apdo. Correos 99, 03080 Alicante. ;Dinarès-Turell, J.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione Roma2, Roma, Italia ;Lancis, C.; Departamento de Ciencias de la Tierra y del Medio Ambiente. Universidad de Alicante. Apdo. Correos 99, 03080 Alicante. ;Tent-Manclús, J. E.; Departamento de Ciencias de la Tierra y del Medio Ambiente. Universidad de Alicante. Apdo. Correos 99, 03080 Alicante. ;Yébenes, A.; Departamento de Ciencias de la Tierra y del Medio Ambiente. Universidad de Alicante. Apdo. Correos 99, 03080 Alicante.; ; ; ; ; ; The Messinian and Pliocene stratigraphic record in the Garruchal section (Bajo Segura Basin) has been divided into three allostratigraphic units, whose timing were established through combined calcareous nannoplankton biostratigraphy and magnetostratigraphy. The T-MI Unit (late Tortonian – Messinian) recorded the pre-evaporitic marine sedimentation (pre-Messinian salinity crisis deposits). This Unit is limited at the top by the intra-Messinian unconformity, representing a subaerial erosive phase related to a first major sea-level fall. The MII Unit (late Messinian) is characterized by lagoonal sedimentation, related to the socalled Lago Mare episode of the Mediterranean. At the top of this MII Unit is located the end-Messinian unconformity, caused by a second major sea-level fall. Over this unconformity lies the P Unit (early Pliocene), represented by marine deposit which marks a transgression, and the subsequent final of the Messinian salinity crisis.138 27