Geologica Acta
Geologica Acta (ISSN 1695-6133 / ISSN electrónico desde 1696 hasta 5728) es una revista institucional y de acceso abierto, internacional y con un perfil generalista de Ciencias de la Tierra. La revista acoge tanto artículos de tipo conceptual como regional, con especial énfasis en las zonas del Mediterráneo, Sur América y el Caribe, pero sin dejar de considerar contribuciones de cualquier región del mundo. Igualmente se incentiva la publicación de números temáticos que den a conocer los resultados de proyectos o reuniones científicas internacionales.

 

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2020-03-05
05:37
24 p, 7.2 MB MORB-derived amphibolites in the Paleozoic basement of the Aluminé Igneous-Metamorphic Complex, Neuquén, Argentina : Decoding its genesis, P-T evolution and pre-Andean regional correlations. / Urraza, Ivana A. (Universidad Nacional del Sur. Departamento de Geología) ; Delpino, Sergio H. (INGEOSUR (CONICET-UNS)) ; Grecco, Laura E. (Universidad Nacional del Sur. Departamento de Geología)
Amphibolites included in the metapelitic sequence and as xenoliths in intrusive magmatic rocks outcropping in the southern sector of the Aluminé Igneous-Metamorphic Complex (AIMC), Neuquén, Argentina, are studied in detail in order to determine their origin and their subsequent metamorphic evolution. [...]
2019 - 10.1344/GeologicaActa2019.17.10
Geologica acta, Vol. 17 (2019) , p. 1-24  
2020-02-12
05:33
17 p, 15.2 MB Morphology, biostratigraphy, and evolution of Pliocene-Pleistocene diatoms Proboscia barboi and Proboscia curvirostris / Andrade, João (Universidade Nova de Lisboa. Departamento de Ciências da Terra) ; Legoinha, Paulo (Universidade Nova de Lisboa. Geobiotec) ; Stroynowski, Zuzia (Instituto Português do Mar e da Atmosfera (Algés, Portugal)) ; Abrantes, Fátima (Centro de Ciências do Mar do Algarve (Faro, Portugal))
Proboscia barboi and Proboscia curvirostris are two important diatom biostratigraphic markers from the high latitudes of the North Pacific and North Atlantic Oceans, dating back to the Pliocene-Pleistocene time. [...]
2019 - 10.1344/GeologicaActa2019.17.9
Geologica acta, Vol. 17 (2019) , p. 1-17  
2019-10-15
08:00
17 p, 6.6 MB Evaluation of the Relative Tectonic Activity of the Adıyaman fault within the Arabian-Anatolian plate boundary (eastern Turkey). / Khalifa, A. (Istanbul Technical University. Department of Geological Engineering) ; Çakir, Z. (Istanbul Technical University. Department of Geological Engineering) ; Owen, L. A. (University of Cincinnati. Department of Geology) ; Kaya, Ş. (Istanbul Technical University. Department of Geomatics)
The left-lateral strike-slip Adıyaman fault is located in eastern Turkey within the plate boundary deformation zone between Arabia and Anatolia. The Adıyaman fault is a major splay from the East Anatolian Fault (EAF), one of the most important tectonic structures in the Eastern Mediterranean region. [...]
2019 - 10.1344/GeologicaActa2019.17.6
Geologica acta, Vol. 17 (2019) , p. 1-17 (Articles)  
2019-10-15
08:00
9 p, 1.1 MB Comments on Percrocuta carnifex (Carnivora, Percrocutidae) based on new fossil material from the Nagri Formation (Middle Siwaliks) of Hasnot, Pakistan / Ghaffar, A. (Cholistan University of Veterinary and Animal Sciences (Pakistan). Department of Zoology) ; Akhtar, M. (Minhaj University (Pakistan). Department of Zoology) ; Khan, M.A. (University of the Punjab (Pakistan). Department of Zoology) ; Babar, M.A. (University of the Punjab (Pakistan). Department of Zoology)
New dentary material of Percrocuta carnifex (Pilgrim, 1913) from the Nagri Formation ofHasnot, Pakistan, is described. Specimens of this species from the Siwalik continental deposits described by previous authors are discussed in detail. [...]
2019 - 10.1344/GeologicaActa2019.17.3
Geologica acta, Vol. 17 (2019) , p. 1-9 (Articles)  
2019-10-15
08:00
19 p, 3.6 MB Late-Variscan multistage hydrothermal processes unveiled by chemical ages coupled with compositional and textural uraninite variations in W-Au deposits in the western Spanish Central System Batholith / Timón Sánchez, Susana (Instituto Geológico y Minero de España) ; López-Moro, Francisco Javier (Universidad de Salamanca. Departamento de Geología) ; Romer, R.L. (Deutsches GeoForschungsZentrum (GFZ)) ; Rhede, D. (Deutsches GeoForschungsZentrum (GFZ)) ; Fernández-Fernández, Agustina (Departamento de Geología, Universidad de Salamanca) ; Moro-Benito, María Candelas (Universidad de Salamanca. Departamento de Geología)
The scheelite skarn from Los Santos and the W-Au veins from El Cabaco district, located in the Spanish Central System Batholith (SCSB), are some of the best-known tungsten ore deposits in Spain. Uraninite is an accessory mineral in both deposits, which underwent several hydrothermal flow events. [...]
2019 - 10.1344/GeologicaActa2019.17.1
Geologica acta, Vol. 17 (2019) , p. 1-19 (Articles)  
2019-10-15
08:00
16 p, 6.4 MB Langhian rays (Chondrichthyes, Batomorphii) from Brielas, Lower Tagus Basin, Portugal / Fialho, P. (Universidade de Évora. Departamento de Geociências) ; Balbino, A. (Universidade de Évora. Departamento de Geociências) ; Antunes, M.T. (Universidade Nova de Lisboa. Faculdade de Ciências e Tecnologia,)
The Langhian Vc unit of Brielas section (Caparica road, Almada), in the marine Miocene of the Lower Tagus Basin (West Portugal), is rich in batoid species. In this study, batoids are represented by 149 isolated fossil teeth and a single fossil dental plate collected from a bulk sample of washed and sorted sediment. [...]
2019 - 10.1344/GeologicaActa2019.17.7
Geologica acta, Vol. 17 (2019) , p. 1-16 (Articles)  
2019-10-15
08:00
15 p, 7.8 MB Audiomagnetotelluric survey at the Bañitos-Gollete geothermal area, main Andes Cordillera of San Juan, Argentina / Barcelona, Hernán (Universidad de Buenos Aires. Instituto de Estudios Andinos) ; Peri, Gisel (Universidad de Buenos Aires. Instituto de Geociencias Básicas, Aplicadas y Ambientales) ; Wincour, Diego (Universidad de Buenos Aires. Instituto de Estudios Andinos) ; Favetto, Alicia (Instituto de Geocronología y Geología Isotópica-CONICET (Buenos Aires, Argentina))
The present research explores the Bañitos-Gollete geothermal field located in the Frontal Andes Cordillera over the Pampean flat-slab. We carried out an audiomagnetotelluric survey in order to define the underground geoelectrical structure and to understand the link between the geothermal fluid flow path and the main geological structures. [...]
2019 - 10.1344/GeologicaActa2019.17.8
Geologica acta, Vol. 17 (2019) , p. 1-15 (Articles)  
2019-10-15
08:00
10 p, 3.4 MB The importance of coastal geomorphological setting as a controlling factor on microtextural signatures of the 2010 Maule (Chile) tsunami deposit / Costa, P. J. M. (Universidade de Lisboa. Departamento de Geologia) ; Rasteiro da Silva, D. (Universidade de Lisboa. Departamento de Geologia) ; Figueirinhas, L. (Universidade de Lisboa. Departamento de Geologia) ; Lario, Javier (Universidad Nacional de Educación a Distancia (UNED). Facultad de Ciencias)
Quartz grains collected from Arauco and Mataquito (central Chile) after the 2010 Maule tsunami presented an overwhelming dominance of dissolution textures. The analysis of superficial imprints proved that some grains were mechanically impacted before deposition. [...]
2019 - 10.1344/GeologicaActa2019.17.4
Geologica acta, Vol. 17 (2019) , p. 1-10 (Articles)  
2019-10-15
08:00
9 p, 1.6 MB Tourmaline records the hydrothermal events related to Zn-Pb mineralization around the Murguía diapir (Basque Cantabrian Basin, N Spain) / Galdos, R. (Pontificia Universidad Católica del Perú. Facultad de Ciencias e Ingeniería) ; Canals Sabaté, Àngels (Universitat de Barcelona. Departament de Crista.lografia, Mineralogia i Diposits Minerals) ; Cardellach López, Esteve (Universitat Autònoma de Barcelona. Departament de Geologia) ; Perona Moreno, Joaquín (Centres Científics i Tecnològics, Universitat de Barcelona)
The chemical composition of tourmaline has been used as a host environment register as well as a potential exploration tool for mineral deposits. In this study, the textural and chemical composition of tourmalines associated with Zn-Pb mineralizations around the Murguía diapir (Basque Cantabrian Basin, N Spain) are examined to verify if they record the mineralizing events in the area. [...]
2019 - 10.1344/GeologicaActa2019.17.5
Geologica acta, Vol. 17 (2019) , p. 1-9 (Articles)  
2019-10-15
08:00
18 p, 6.4 MB Multiphase dolomitization in the Jutana Formation (Cambrian), Salt Range (Pakistan) : evidences from field observations, microscopic studies and isotopic analysis / Khan, S. (Quaid-i-Azam University (Pakistan). Department of Earth Sciences) ; Shah, M.M. (Quaid-i-Azam University (Pakistan). Department of Earth Sciences)
Excellent dolomite exposures are observed in the eastern Salt Range (Pakistan), where the Cambrian Jutana Formation consists of two distinct units (i. e. oolitic - pisolitic unit and massive dolomite unit). [...]
2019 - 10.1344/GeologicaActa2019.17.2
Geologica acta, Vol. 17 (2019) , p. 1-18 (Articles)