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Resultats globals: 10 registres trobats en 0.02 segons.
Articles, 10 registres trobats
Articles 10 registres trobats  
1.
26 p, 7.1 MB Shifts in the Ediacaran to Lower Ordovician sedimentary zircon provenances of Northwest Gondwana : the Pyrenean files / Padel, Maxime (Bureau de Rercherche Géologique et Minière) ; Clausen, Sébastien (University of Lille) ; Poujol, Marc (University of Rennes) ; Álvaro, Jose Javier (Consejo Superior de Investigaciones Científicas. Instituto de Geociencias)
Detrital zircon grains from Cambrian-Lower Ordovician sandstones and quartzites sampled in the Pyrenees were dated by LA-ICPMS in order to assess their provenance sources. Resulting age distributions are compared to other available datasets from neighbouring margins, such as Morocco, the Iberian Peninsula, southern France and Sardinia. [...]
2022
Geologica acta, Vol. 20 Núm. 2 (2022) , p. 1-VIII (The panafrican and cadomian orogenies in North Africa and western Europe)  
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2.
70 p, 114.5 MB The Venice specimen of Ouranosaurus nigeriensis (Dinosauria, Ornithopoda) / Bertozzo, Filippo (Vrije Universiteit Brussel. Earth System Science-AMGC) ; Dalla Vecchia, Fabio (Institut Català de Paleontologia Miquel Crusafont) ; Fabbri, Matteo (Yale University. Department of Geology and Geophysics)
Ouranosaurus nigeriensis is an iconic African dinosaur taxon that has been described on the basis of two nearly complete skeletons from the Lower Cretaceous Gadoufaoua locality of the Ténéré desert in Niger. [...]
2017 - 10.7717/peerj.3403
PeerJ, Vol. 5 (June 2017) , p. e3403  
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3.
17 p, 2.8 MB Review of the Ediacaran-Lower Ordovician (pre-Sardic) stratigraphic framework of the Eastern Pyrenees, southwestern Europe / Padel, Maxime (Bureau de Recherches Géologiques et Minières-BRGM (Orléans, França)) ; Clausen, Sébastien (Université de Lille) ; Álvaro, Jose Javier (Universidad Complutense de Madrid. Instituto de Geociencias) ; Casas Tuset, Josep Maria (Universitat de Barcelona. Departament de Dinàmica de la Terra i de l'Oceà)
The Ediacaran-Lower Ordovician successions exposed in the Eastern Pyrenees are updated and revised based on recent U-Pb zircon radiometric ages, intertonguing relationships of carbonate-dominated strata, and onlapping patterns marking the top of volcano-sedimentary complexes. [...]
2018 - 10.1344/GeologicaActa2018.16.4.1
Geologica acta, Vol. 16 Núm. 4 (December 2018) , p. 339-355 (Articles)  
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4.
6 p, 290.9 KB Late Triassic-early Jurassic Neotethyan evolution at Northern Gondwana (Jordan and Libya, Mediterranean region) / Makhlouf, I. M. (Hashemite University (Jordània). Department of Earth and Environmental Sciences)
The Early Mesozoic record of northern Gondwana was strongly influenced by sea level fluctuations during the opening of the Neotethys Sea. Detailed facies analysis of the Late Triassic / Early Jurassic Abu Shaybah Fm (Libya, western Mediterranean), and the Triassic Mukheiris Fm (Jordan, eastern Mediterranean) documents the transgressions and regressions that took place during the Neotethys opening. [...]
2006 - 10.1344/105.000000350
Geologica acta, Vol. 4, Núm. 3 (2006) , p. 371-376  
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5.
10 p, 1.6 MB Silurian (Llandovery) monograptids from the Vargas Peña Formation (Paraná Basin, Eastern Paraguay) / Uriz, Norberto J. (Museo de La Plata. División Geología) ; Beatriz Alfaro, Marta (Museo de La Plata. División Geología) ; Galeano Inchausti, Julio C. (Paraguay. Ministerio de Obras Públicas y Comunicaciones. Subsecretaria de Minas y Energía)
The Itacurubí Group is a siliciclastic Silurian sequence exposed in eastern Paraguay (Paraná Basin). It includes from bottom to top the Eusebio Ayala, Vargas Peña and Cariy formations. The entire sedimentary group has yielded a rich association of invertebrates, ichnofossils and palynomorphs. [...]
2008 - 10.1344/105.000000250
Geologica acta, Vol. 6, Núm. 2 (Juny 2008) , p. 181-190  
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6.
14 p, 1.0 MB An Early Ordovician (Floian) Conodont Fauna from the Eastern Cordillera of Peru (Central Andean Basin) / Gutiérrez-Marco, Juan Carlos (Centro Superior de Investigaciones Científicas. Instituto de Geología Económica) ; Albanesi, G. L., (Guillermo L.) (Universidad Nacional de Córdoba. Facultad de Ciencias Exactas, Físicas y Naturales) ; Sarmiento, Graciela Noemí (Universidad Complutense de Madrid. Facultad de Ciencias Geológicas) ; Carlotto Caillaux, Victor Santiago (Universidad Nacional San Antonio Abad del Cusco. Departamento de Geología) ; Consejo Nacional de Investigaciones Científicas y Técnicas (Argentina). Museo de Paleontología
Late Floian conodonts are recorded from a thin limestone lens intercalated in the lower part of the San José Formation at the Carcel Puncco section (Inambari River), Eastern Cordillera of Peru. The conodont association includes Gothodus costulatus LINDSTRÖM, Protopanderodus rectus (LINDSTRÖM), Drepanoistodus basiovalis (SERGEEVA), Drepanoistodus forceps (LINDSTRÖM), Drepanodus arcuatus PANDER, Trapezognathus diprion (LINDSTRÖM), Erraticodon patu COOPER, and Ansella cf. [...]
2008 - 10.1344/105.000000248
Geologica acta, Vol. 6, Núm. 2 (Juny 2008) , p. 147-160  
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7.
17 p, 1.4 MB Internal anatomy of an erg sequence from the aeolian-fluvial system of the De La Cuesta Formation (Paganzo Basin, northwestern Argentina) / Spallett, L. A. (Universidad Nacional de La Plata (Argentina). Centro de Investigaciones Geológicas) ; Limarino, C. O. (Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales) ; Colombo Piñol, Ferran (Universitat de Barcelona. Facultat de Geologia)
Permian red beds of the De La Cuesta Formation in the Sierra de Narváez (Paganzo Basin, northwestern Argentina) are essentially composed of sandstones associated with mudstones and subordinate conglomerates. [...]
2010 - 10.1344/105.000001581
Geologica acta, Vol. 8, Núm. 4 ( 2010) , p. 431-447  
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8.
25 p, 3.3 MB A synthesis of palynological data from the Lower Permian Cerro Pelado Formation (Parana Basin, Uruguay): A record of warmer climate stages during Gondwana glaciations / Beri, A. (Universidad de la República (Uruguay). Facultad de Ciencias. Sección Paleontología) ; Martínez-Blanco, X. (Universidad de la República (Uruguay). Facultad de Ciencias. Sección Paleontología) ; Mourelle, D. (Universidad de la República (Uruguay). Facultad de Ciencias. Sección Paleontología)
This paper presents a synthesis of the palynological record in the Cerro Pelado Formation deposits (Lower Permian, Paraná basin, Cerro Largo Department, north-eastern Uruguay) based on pre-existing data and new findings. [...]
2010 - 10.1344/105.000001580
Geologica acta, Vol. 8, Núm. 4 (Desembre 2010) , p. 419-429  
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9.
31 p, 5.5 MB Did Patagonia collide with Gondwana in the Late Paleozoic? Some insights from a multidisciplinary study of magmatic units of the North Patagonian Massif / Rapalin, A. E. (Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales) ; López de Luchi, M. (Universidad de Buenos Aires. Instituto de Geocronología y Geología Isotópica) ; Martínez Dopico, C. ; Lince Klinger, F. (Instituto Sismológico Volponi, Universidad Nacional de San Juan) ; Giménez, M. (Instituto Sismológico Volponi, Universidad Nacional de San Juan) ; Martínez, P. (Instituto Sismológico Volponi, Universidad Nacional de San Juan) ; Consejo Nacional de Investigaciones Científicas y Técnicas (Argentina) ; Universidad de Buenos Aires. Departamento de Ciencias Geológicas ; Universidad de Buenos Aires. INGEODAV (Instituto de Geofísica "Daniel A. Valencio")
The origin of Patagonia and its relations with the South American crustal blocks to the north have been a matter of debate for decades. We report results from a multidisciplinary study centered on Paleozoic granitoids exposed in the northeastern corner of the North Patagonian Massif. [...]
2010 - 10.1344/105.000001577
Geologica acta, Vol. 8, Núm. 4 ( 2010) , p. 349-371  
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10.
14 p, 3.3 MB Sr, C and O isotope composition of marbles from the Sierra de de Ancasti, Eastern Sierras Pampeanas, Argentina : age and constraints for the Neoproterozoic-Lower Paleozoic evolution of the proto-Gondwana margin / Murra, Juan Alberto (Universidad Nacional de Córdoba. Centro de Investigaciones en Ciencias de la Tierra) ; Baldo, Edgardo G. A. (Universidad Nacional de Córdoba. Centro de Investigaciones en Ciencias de la Tierra) ; Galindo, Carmen (Universidad Complutense de Madrid. Departamento de Petrología y Geoquímica) ; Casquet Martín, Cesar (Universidad Complutense de Madrid. Departamento de Petrología y Geoquímica) ; Pankhrust, Robert John (British Geological Survey) ; Rapela, Carlos Washington (Universidad de La Plata. Centro de Investigaciones Geológicas) ; Dahlquist, Juan Andrés (Universidad Nacional de Córdoba. Centro de Investigaciones en Ciencias de la Tierra) ; Consejo Nacional de Investigaciones Científicas y Técnicas (Argentina)
The Sierra Brava Complex on the eastern flank of the Sierra de Ancasti consists of marbles, metabasites, calc-silicate rocks, psammo-pelitic schists and gneisses. In the central part of this sierra a thick succession of banded schists (Ancasti Formation) crops out. [...]
2011 - 10.1344/105.000001645
Geologica acta, Vol. 9, Núm. 1 (Març 2011) , p. 79-92  
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