http://hdl.handle.net/11703/120177 Fri, 06 Mar 2026 04:57:18 GMT 2026-03-06T04:57:18Z http://hdl.handle.net/11703/120685 Título : La colección de macroforaminíferos Josep Serra Kiel: realzando la dimensión científica del patrimonio paleontológico mueble; The Josep Serra Kiel larger foraminifera collection: remarking the scientific dimension of the palaeontological heritage Nota : Departamento de Paleontología del Museu de Ciències Naturals de Barcelona (MCNB) recibió el pasado 2018 parte de la colección personal micropaleontológica del Dr. Josep Serra Kiel, eminente investigador y profesor de la Universidad de Barcelona. Esta colección está compuesta de material geológico que contiene una gran diversidad de foraminíferos bentónicos complejos del Eoceno medio al Mioceno inferior de Dhofar (Omán) y de la Isla de Socotra (Yemen). Consta de 200 números de registros con material diverso, con más de 1.000 rocas, 456 láminas delgadas, y 32 levigados con los que se han realizado varios estudios científicos de impacto internacional y en los que se han llegado a identificar 92 especies distintas. El mayor exponente del valor científico de esta colección lo constituye el material tipo, ya que en dichos estudios se han descrito nueve especies nuevas y cinco géneros nuevos. La colección micropaleontológica del MCNB ha aumentado cualitativa y cuantitativamente con la donación J. Serra Kiel, reforzando su papel en el escenario del patrimonio paleontológico mueble por su gran utilidad en futuros estudios y proyectos geológicos y museológicos. Palabras clave: colecciones, foraminíferos, J. Serra Kiel, micropaleontología, patrimonio paleontológico mueble.; In 2018 the Museu de Ciències Naturals de Barcelona received part of the personal micropalaeontological collection of Dr. Josep Serra-Kiel, who was an renowned researcher and professor at the Universitat de Barcelona (Spain). This collection is composed of geological material that contains a great diversity of larger foraminifera from the middle Eocene to the lower Miocene of Dhofar (Oman) and Socotra Island (Yemen). The collection has 200 register numbers of different type of materials, namely, 1000 rocks, 456 thin sections, and 32 levigated samples, that have been objective of several studies of international impact, which identified up to 92 different species. The most important and remarkable part of this collection is the type material, as 9 new species and 5 new genera have been described in those studies. The micropalaeontological collection of the MCNB has increased qualitatively and quantitativelu with the donation of the J. Serra Kiel collection, strengthening its role in the the paleontological heritage scenario because of its usefulness in future geological and museological studies and projects. Keywords: collections, Foraminifera, J. Serra Kiel, micropalaeontology, movable palaeontological heritage. Tue, 01 Jan 2019 00:00:00 GMT http://hdl.handle.net/11703/120685 2019-01-01T00:00:00Z http://hdl.handle.net/11703/127815 Título : The chronology and rotational kinematics in the South-Eastern Jaca Basin (Southern Pyrenees): Las Bellostas section Nota : Despite the large number of magnetostratigraphic studies in the South Pyrenean Basin aiming to calibrate the basin chronostratigraphy and the biostratigraphic scales, the South Eastern Jaca Basin remains unexplored from this perspective, and its relation with the Ainsa Basin is not fully understood. In this work we contribute with new magnetostratigraphic data from the 950m thick Las Bellostas section, located in the northern hinge of the Balzes anticline. Well-proven primary signal (positive fold test and two pseudo-antiparallel polarities) supported by numerous primary data in the surroundings allow us building a reliable local polarity sequence of eight magnetozones (from R1 to N4). Additionally, seven new biostratigraphic samples (Nummulites and Assilina) in the lower part of the section (marine environment) allows tightening the section to the Geomagnetic Polarity Time Scale (GPTS) and proposing a refined age model for the southeastern Jaca Basin. The section starts in the Boltaña Fm., of Cuisian age (Shallow Benthic Zone, SBZ11), is followed by a sedimentary gap from C22n to C20n as witnessed by biostratigraphic data (SBZ11 underneath the hiatus and SBZ16 just atop). The deltaic Sobrarbe Fm can be tracked until the C19n (Late Lutetian). From this point (200m) until the top of the section (950m), at least, the entire C18n chron can be recognized within the molassic Campodarbe Fm (C18n.2n-C18n.1r and C18n.1n) (Bartonian) equivalent to the West to the prodeltaic Arguis marls Fm. The Middle Cusian (SBZ11) to Middle Lutetian (SBZ15) stratigraphic hiatus is, in part, enhanced by the structural position at the hinge of the Balzes anticline. These new chronostratigraphic constraints help refining the W-E and N-S stratigraphic relationships in the eastern Jaca Basin and in the Ainsa Basin. This section also allows us to accurately refine the kinematics of the rotational activity in the eastern External Sierras. The significant difference in magnetic declination along the section and neighboring paleomagnetic data from the Balzes anticline (from ≈70º clockwise at the base of the stratigraphic section to non-significant at the top) together with the new age model for the Eastern Jaca Basin help characterizing the rotational activity of the Balzes thrust sheet. The rotation took place between chrons C20r (Middle Lutetian; 45Ma) and C17 (Lower Priabonian 37-38Ma) in agreement to nearby structures (Boltaña, Pico del Aguila anticlines) but clearly diachronic to western ones (Santo Domingo anticline). Besides, the rotational activity seems to follow a linear and continuous pattern (velocity 9-11º/Ma, R: 0.83-0.96) in contrast to closer structures that show two distinct rotational velocities (i.e. Boltaña). These new data still let open the debate on the rotational kinematics along the South Pyrenean basal thrust. Fri, 23 Sep 2022 00:00:00 GMT http://hdl.handle.net/11703/127815 2022-09-23T00:00:00Z http://hdl.handle.net/11703/127808 Título : Los Hippurites del Barranc del Racó, microfacies y fauna asociada (Maastrichtiense Superior, sur de la provincia de Valencia) Nota : El Cretácico superior, en el flanco 5 de la Sierra de La Solana, en el Barranc deis Albarcers y Barrane del Racó, cerca del Mas del Racó al W de Hocairent, presenta un nivel formado por un thicket de rudistas con Hippurites radiosas des Moulins y Hippurites cornucopiae Defrance, junto a equinidos, como Pygopyrina darderí (Lambert), corales coloniales como Actinacis sp. y Procladocora sp., y solitarios, en una matriz biomicrítica con abundantes foraminíferos, ostrácodos y dasicladales (Neomeris sp.) y localmente siliciclastos. La base del thicker está formada por una biosparita de foraminíferos que presenta rellenos geopetales y «silto vadoso. El techo del thicket está formado por una biomierosparita a biomicrita dc foraminíferos con abundante fauna de bivalvos y equinidos, con ejemplares completos o muy fragmentados. La asociación de foraminíferos, igual en el thicket que en su base y techo, está formada por Siderolites calcitrapoides Lamarck, Acervulina aif. ogormani (Douvdlé), Orbitoides media d’Orbigny, Orbitoides tissoti Schlumberger, Orbitoides apiculata Schlumberger, Hellenocyclina beotica Reichel, Omphalocyclus macroporus (Lamarck), miliólidos y rotálidos. Las microfacies indican un medio marino protegido, más o menos restringido, los tipos de procesos diagenéticos observados sugieren que este medio se vio rápidamente afectado por condiciones metedrico-vadosas y la fauna determina una edad Maastrichtiense superior.; The Upper Cretaceous of the southern flank of Sierra de La Solana, at Barrane deis Albarcers and Barranc del Racó, around Mas del Raed, west of Bocairent, presents a level formed by a rudists thicket with hippurites radiosus des Moulins and Hippurites cornucopiae Defrance, together with echinoids like Pygopyrina darderi (Lambert), colonial corals like Actinacis sp. and Procladocora sp. and solitary ones, in a biomicritic matrix containing abundant foraminifera, ostracodes and dasycladaleans (Neorneris sp.) and sporadic siliciclasts. The base of the thieket is formed hy a foraminiferal biosparite presenting geopetal infillings and vadose silt. The top of the thicket is formed by a foraminiferal biomicrosparite-biomicrite with an abundant fauna of bivalves and ecbinoids, complete or very fragmented. The foraminiferal association, dic same in the thicket as in its base and top, is formed by Siderolites calcitrapoides Lamarck, Acervulina aff. ogorman¡ (Douvillé), Orbitoides media d’Orbigny, Orbitoides tissoti Schlumberger, Qrbitoldes apiculata Schlumberger, Ilellenocyclina beotica Reichel, Omphalocyclus macroporus (Lamarck), miliolids and rotalids. Microfacies indicate a protected, more or less restricted, marine environment, the type of diagenetic processes suggest that this cnvironment quickly undergone a meteoric-vadose condition and the fauna is charactcristic of Late Maastrichtian age. Sat, 01 Jan 1994 00:00:00 GMT http://hdl.handle.net/11703/127808 1994-01-01T00:00:00Z http://hdl.handle.net/11703/120692 Título : Micropalaeontology, biostratigraphy, and depositional setting of the mid-Cretaceous Derdere Formation at Derik, Mardin, south-eastern Turkey Nota : The micropalaeontology of the mid-Cretaceous Derdere Formation (Mardin Group) from outcrops close to the town of Derik in south-eastern Turkey is described here. In thin sections from the carbonates that form the majority of this formation, rich and diverse micropalaeontological assemblages are present. These include larger benthonic foraminifera, planktonic foraminifera, and other microfossils, including calcareous algae. Alveolinid foraminifera are particularly common and include a new species – Simplalveolina mardinensis. In contrast to some previous studies, the majority of the section can be demonstrated to be Cenomanian (notably middle Cenomanian) in age with no confirmation of extension into the Albian or Turonian. Deposition took place on a carbonate ramp within a range of discrete deposition settings ranging from peritidal to outer ramp. A notable feature is the small-scale (a few metres) shallowing-up cycles within the inner-ramp facies that may be allocyclic or autocyclic in origin. Three major deepening events are recognised within the succession, characterised by more open marine microfauna and microfacies. These occur at the base of the formation, within the mid-Cenomanian lower part, and towards the top of the formation. These may correlate with three Cenomanian deepening phases seen in other parts of the Arabian Plate. Thu, 05 Nov 2020 00:00:00 GMT http://hdl.handle.net/11703/120692 2020-11-05T00:00:00Z