Geologica acta

Geologica acta 6 registres trobats  La cerca s'ha fet en 0.01 segons. 
1.
17 p, 5.2 MB New palaeobotanical data from Carboniferous Culm deposits constrain the age of the Variscan deformation in the eastern Pyrenees. / Martín-Closas, Carles (Universitat de Barcelona. Departament de Dinàmica de la Terra i de l’Oceà) ; Trias, S. (Universitat de Barcelona. Departament de Dinàmica de la Terra i de l’Oceà) ; Casas Tuset, Josep Maria (Universitat de Barcelona. Departament de Dinàmica de la Terra i de l’Oceà)
The pre-Variscan rocks of the Pyrenees exhibit a polyphase deformation linked to the Variscan crustal shortening and a low-pressure–high-temperature metamorphism. However, there is scarce chronostratigraphic evidence of this Variscan deformation. [...]
2018 - 10.1344/GeologicaActa2018.16.2.1
Geologica acta, Vol. 16 Núm. 2 (June 2018) , p. 107-123 (Articles)  
2.
24 p, 5.1 MB C and O stable isotopes and rare earth elements in the Devonian carbonate host rock of the Pivehzhan iron deposit, NE Iran. / Najafzadeh Tehrani, P. (University of Tabriz. Department of Earth Sciences) ; Calagari, A.A. (University of Tabriz. Department of Earth Sciences) ; Velasco Roldan, Francisco (Universidad del País Vasco. Departamento de Mineralogía y Petrología) ; Simmonds, V. (University of Tabriz. Research Institute for Fundamental Sciences) ; Siahcheshm, K. (University of Tabriz. Department of Earth Sciences)
The Pivehzhan iron deposit is located at about 80km southwest of Mashhad, NE Iran. It occur within the Devonian carbonates as lenticular and massive bodies, as well as veinlets of magnetite and iron sulphides, transformed to goethite and haematite by weathering process. [...]
2018 - 10.1344/GeologicaActa2018.16.2.2
Geologica acta, Vol. 16 Núm. 2 (June 2018) , p. 125-148 (Articles)  
3.
14 p, 3.1 MB The Aragonian type area revisited; comments on paleontology and stratigraphy. / Freudenthal, Matthijs (Universidad de Granada. Departamento de Estratigrafía y Paleontología) ; Martín-Suárez, E. (Universidad de Granada. Departamento de Estratigrafía y Paleontología)
In a recent study of van der Meulen and coauthors, the fossil rodents Fahlbuschia, Pseudofahlbuschia and Renzimys from the Aragonian type area (Calatayud Basin, Spain) were synonimized with Democricetodon. [...]
2018 - 10.1344/GeologicaActa2018.16.2.3
Geologica acta, Vol. 16 Núm. 2 (June 2018) , p. 149-162 (Articles)  
4.
26 p, 11.5 MB Middle-Late Eocene marine record of the Biga Peninsula, NW Anatolia, Turkey. / Özcan, E. (Istanbul Technical University. Department of Geological Engineering) ; Okay, A.I. (Istanbul Technical University. Department of Geological Engineering) ; Bürkan, K.A. (Turkish Petroleum Corporation) ; Yücel, A.O. (Istanbul Technical University. Department of Geological Engineering) ; Özcan, Z. (Istanbul Technical University. Eurasia Institute of Earth Sciences)
The Eocene shallow marine deposits marking the first marine incursion in the Biga Peninsula (NW Turkey) after the collision of the Sakarya and Anatolide-Tauride plates were investigated based on paleontological, litho- and chrono-stratigraphic data. [...]
2018 - 10.1344/GeologicaActa2018.16.2.4
Geologica acta, Vol. 16 Núm. 2 (June 2018) , p. 163-187 (Articles)  
5.
30 p, 14.1 MB The Konservat-Lagerstätte Menat (Paleocene; France) – an overview and new insights / Wedmann, S. (Senckenberg Forschungsstation Grube Messel. Forschungsinstitut Senckenberg) ; Uhl, D. (Senckenberg Forschungsinstitut und Naturmuseum Frankfurt) ; Lehmann, T. (Senckenberg Forschungsinstitut und Naturmuseum Frankfurt) ; Garrouste, R. (Museum National d'€™Histoire Naturelle (França)) ; Nel, A. (Museum National d'€™Histoire Naturelle (França)) ; Gomez, B. (Université Lyon 1) ; Smith, K. (Senckenberg Forschungsinstitut und Naturmuseum Frankfurt) ; Schaal, S.F.K. (Senckenberg Forschungsinstitut und Naturmuseum Frankfurt)
The Konservat-Lagerstätte Menat (Puy-de-Dôme, France) is an outstanding archive of a Paleocene ecosystem, which was deposited in a former maar lake. Excavations during the last century have yielded an extensive flora and fauna record, therefore an overview of the current state of paleontological investigations is given in this paper. [...]
2018 - 10.1344/GeologicaActa2018.16.2.5
Geologica acta, Vol. 16 Núm. 2 (June 2018) , p. 189-213 (Articles)  
6.
21 p, 11.5 MB Seismic imaging and attribute analysis of Chicxulub Crater central sector, Yucatán Platform, Gulf of Mexico. / Canales-García, I. (Universidad Nacional Autónoma de México. Departamento de Geomagnetismo y Exploración) ; Urrutia-Fucugauchi, J. (Universidad Nacional Autónoma de México. Departamento de Geomagnetismo y Exploración) ; Aguayo-Camargo, E. (Universidad Nacional Autónoma de México. Departamento de Geología)
Chicxulub Crater, formed ~66Ma ago by an asteroid impact on the southern Gulf of Mexico, is the best preserved of the three large multi-ring basins in the terrestrial record. The crater structure is characterized by a semi-circular concentric ring pattern, marking the crater basin, peak ring, terrace zone and basement uplift. [...]
2018 - 10.1344/GeologicaActa2018.16.2.6
Geologica acta, Vol. 16 Núm. 2 (June 2018) , p. 215-235 (Short note)  

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