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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2016-12-19
06:28
20 p, 3.9 MB Organic-rich shales from internal Betic basins (SE Spain) : potential source rocks analogs for the pre-Messinian Salt play in the western Mediterranean / Permanyer Bastardas, Albert (Universitat de Barcelona. Department de Geologia, Petrologia i Prosprecció Geològica) ; Jorge, R. (Universitat de Barcelona. Department de Geologia, Petrologia i Prosprecció Geològica) ; Baudino, Roger (Repsol Exploracion S.A) ; Gibert Beotas, Lluís (Universitat de Barcelona. Department de Geologia, Petrologia i Prosprecció Geològica)
Southeastern Spain has a large number of Late Neogene basins with substantial evaporitic deposits that developed under an overall NNW-SSE compressional regime related to the African-European tectonic plates collision. [...]
2014 - 10.1344/GeologicaActa2016.14.4.7
Geologica acta, Vol. 14 Núm. 4 (december 2016) , p. 443-460 (Special Issues: Selected contributions from the XIV ALAGO Congress)  
2016-12-19
06:28
28 p, 3.3 MB Depositional environment and source rock potential of Cenomanian and Turonian sedimentary rocks of the Tarfaya Basin, Southwest Morocco / Ghassal, B.I. (Institute of Geology and Geochemistry of Petroleum and Coal (Aquisgrà, Alemanya). Energy and Mineral Resources Group (EMR)) ; Littke, R. (Institute of Geology and Geochemistry of Petroleum and Coal (Aquisgrà, Alemanya). Energy and Mineral Resources Group (EMR)) ; Sachse, V. (Institute of Geology and Geochemistry of Petroleum and Coal (Aquisgrà, Alemanya). Energy and Mineral Resources Group (EMR)) ; Sindern, S. (Institute of Mineralogy and Economic Geology (Aquisgrà, Alemanya). Energy and Mineral Resources Group (EMR)) ; Schwarzbauer, J. (Institute of Geology and Geochemistry of Petroleum and Coal (Aquisgrà, Alemanya). Energy and Mineral Resources Group (EMR))
Detailed organic and inorganic geochemical analyses were used to assess the depositional environment and source rock potential of the Cenomanian and Turonian oil shale deposits in the Tarfaya Basin. This study is based on core samples from the Tarfaya Sondage-4 well that penetrated over 300m of Mid Cretaceous organic matter-rich deposits. [...]
2014 - 10.1344/GeologicaActa2016.14.4.6
Geologica acta, Vol. 14 Núm. 4 (december 2016) , p. 419-441 (Special Issues: Selected contributions from the XIV ALAGO Congress)  
2016-12-19
06:28
15 p, 1.5 MB Modeling of microbial gas generation : application to the eastern Mediterranean “Biogenic Play” / Schneider, F. (Beicip-Franlab) ; Dubille, M. (Beicip-Franlab) ; Montadert, L. (Beicip-Franlab)
Biogenic gas is becoming increasingly important as an exploration target in the petroleum industry because it occurs in geologically predictable circumstances and in large quantities at shallow depths as free gas or gas hydrates. [...]
2014 - 10.1344/GeologicaActa2016.14.4.5
Geologica acta, Vol. 14 Núm. 4 (december 2016) , p. 403-417 (Special Issues: Selected contributions from the XIV ALAGO Congress)  
2016-12-19
06:28
17 p, 1.2 MB Geochemical characterization of the hydrous pyrolysis products from a recent cyanobacteria-dominated microbial mat / Franco, N. (Universidade Federal do Rio de Janeiro. Laboratório de Palinofácies e Facies Orgânica) ; Mendoça Filho, J. G. (Universidade Federal do Rio de Janeiro. Laboratório de Palinofácies e Facies Orgânica) ; Silva, T. F. (Universidade Federal do Rio de Janeiro. Laboratório de Palinofácies e Facies Orgânica) ; Stojanovic, K. (University of Belgrade. Faculty of Chemistry) ; Fontana, L. F. (Universidade Federal do Rio de Janeiro. Laboratório de Palinofácies e Facies Orgânica) ; Carvalhal-Gomes, S. (Universidade Federal do Rio de Janeiro. Laboratório de Palinofácies e Facies Orgânica) ; Silva, F. S. (Universidade Federal do Rio de Janeiro. Laboratório de Palinofácies e Facies Orgânica) ; Furukawa, G. G. (Universidade Federal do Rio de Janeiro. Laboratório de Palinofácies e Facies Orgânica)
Hydrous pyrolysis experiments were performed on a recent microbial mat sample from Lagoa Vermelha, Brazil, to determine whether crude oil can be generated and expelled during artificial maturation of the Organic Matter (OM). [...]
2014 - 10.1344/GeologicaActa2016.14.4.4
Geologica acta, Vol. 14 Núm. 4 (december 2016) , p. 385-401 (Special Issues: Selected contributions from the XIV ALAGO Congress)  
2016-12-19
06:28
22 p, 8.9 MB Facies analysis and paleoenvironmental reconstruction of Upper Cretaceous sequences in the eastern Para-Tethys Basin, NW Iran / Omidvar, M. (University of Isfahan (Isfahan, Iran). Department of Geology) ; Safari, A. (University of Isfahan (Isfahan, Iran). Department of Geology) ; Vaziri-Moghaddam, H. (University of Isfahan (Isfahan, Iran). Department of Geology) ; Ghalavand, H. (National Iranian Oil Company)
Upper Cretaceous mixed carbonate-siliciclastic sequences are among the most important targets for hydrocarbon exploration in the Moghan area, located in the eastern Para-Tethys Basin. Despite of their significance, little is known about their facies characteristics and depositional environments. [...]
2014 - 10.1344/GeologicaActa2016.14.4.3
Geologica acta, Vol. 14 Núm. 4 (december 2016) , p. 363-384 (Articles)  
2016-12-19
06:28
14 p, 2.2 MB Revision of the Maastrichtian-Palaeocene charophyte biostratigraphy of the Fontllonga reference section (southern Pyrenees, Catalonia, Spain) / Vicente, Alba (Universitat de Barcelona. Departament de Dinàmica de la Terra i de l’Oceà) ; Villalba Breva, Sheila (Universitat de Barcelona. Departament de Dinàmica de la Terra i de l’Oceà) ; Ferràndez i Cañadell, Carles (Universitat de Barcelona. Departament de Dinàmica de la Terra i de l’Oceà) ; Martín-Closas, Carles (Universitat de Barcelona. Departament de Dinàmica de la Terra i de l’Oceà)
The Fontllonga section is one of the best-known stratigraphic sections wordwide for the study of charophyte biostratigraphy of the Maastrichtian and lower Palaeocene. An updated proposal for the charophyte biostratigraphy of this section is presented after summarizing previous knowledge. [...]
2014 - 10.1344/GeologicaActa2016.14.4.2
Geologica acta, Vol. 14 Núm. 4 (december 2016) , p. 349-362 (Articles)  
2016-12-19
06:28
13 p, 5.5 MB Stars in the Silurian sky : Echinoderm holdfasts from the Carnic Alps, Austria / Ferretti, A. (Università degli Studi di Modena e Reggio Emilia. Dipartimento di Scienze Chimiche e Geologiche) ; Ausich, W. I. (The Ohio State University. School of Earth Sciences) ; Corradini, C. (Università di Cagliari. Dipartimento di Scienze Chimiche e Geologiche) ; Corriga, M. G. (Università di Cagliari. Dipartimento di Scienze Chimiche e Geologiche) ; Schönlaub, H. P. (Austrian Academy of Sciences. Commission for Geosciences)
A small collection of echinoderm holdfasts from the Ludlow Cardiola Formation of the Carnic Alps (Austria) contains a wide range of morphologies as a response of environmental adaptation. In general, the holdfasts have a globous and massive dome-like profile with several processes arranged in a sub-radial disposition, so to create a sort of ‘star-like’ outline. [...]
2014 - 10.1344/GeologicaActa2016.14.4.1
Geologica acta, Vol. 14 Núm. 4 (december 2016) , p. 335-347 (Articles)  
2016-10-07
06:16
19 p, 8.8 MB Selandian-Thanetian larger foraminifera from the lower Jafnayn Formation in the Sayq area (eastern Oman Mountains) / Serra-Kiel, Josep (Universitat de Barcelona. Departament d’Estratigrafia, Paleontologia i Geociències Marines) ; Vicedo Vicedo, Vicent (Museu de Ciències Naturals de Barcelona) ; Razin, Ph. (Université Bordeaux III) ; Grélaud, C. (Université Bordeaux III)
The larger foraminifera of the lower part of the Jafnayn Formation outcropping in the Wadi Sayq, in the Paleocene series of the eastern Oman Mountains, have been studied and described in detail. The analysis have allowed us to develop a detailed systematic description of each taxa, constraining their biostratigraphic distribution and defining the associated foraminifera assemblages. [...]
2016 - 10.1344/GeologicaActa2016.14.3.7
Geologica acta, Vol. 14 Núm. 3 (September 2016) , p. 315-333 (Articles)  
2016-10-07
06:16
18 p, 2.6 MB New constraints on the origin of the ophiolitic rocks within sinorogenic turbiditic sequences at Cilento region (southern Italy) / Mazzeo, F. C. (Università degli Studi di Napoli Federico II. Dipartimento di Science della Terra, dell'Ambiente e delle Risorse) ; Aulinas Juncà, Meritxell (Universitat de Barcelona. Departament de Mineralogia, Petrologia i Geologia Aplicada) ; Arienzo, I. (Istituto Nazionale di Geofisica e Vulcanologia. Sezione di Napoli Osservatorio Vesuviano) ; Cirillo, G. (Università degli Studi di Napoli Federico II. Dipartimento di Science della Terra, dell'Ambiente e delle Risorse) ; Iovine, R.S. (Georg-August-Universität. Geowissenschaftliches Zentrum) ; Sparice, D. (Università degli Studi di Napoli Federico II. Dipartimento di Science della Terra, dell'Ambiente e delle Risorse) ; De Vita, P. (Università degli Studi di Napoli Federico II. Dipartimento di Science della Terra, dell'Ambiente e delle Risorse)
Mafic igneous rocks (pillow lavas and gabbros) embedded as olistoliths within Miocene turbiditic sequences crop out in the Cilento area at the Mount Centaurino (Campania region, Southern Italy). The concentration of major oxides, as well as trace element ratios (Nb/Yb, Nb/Ta, Th/Nb) and the chondrite-normalized Rare Earth Elements (REE) patterns suggest a tholeiitic character with Mid Oceanic Ridge Basalts (MORB) affinity. [...]
2016 - 10.1344/GeologicaActa2016.14.3.6
Geologica acta, Vol. 14 Núm. 3 (September 2016) , p. 299-314 (Articles)  
2016-10-07
06:16
17 p, 2.6 MB Holocene palaeoecological changes recorded in mollusc-bearing cave sediments, the Cave above the Słupska Gate (southern Poland) / Szymanek, M. (University of Warsaw. Faculty of Geology) ; Krajcarz, M. (Polish Academy of Sciences. Institute of Geological Sicences) ; Krajcarz, M. T. (Polish Academy of Sciences. Institute of Geological Sicences) ; Alexandrowicz, W. P. (AGH University of Science and Technology. Faculty of Geology, Geophysics and Environment Protection)
The Cave above the Słupska Gate (southern Poland) contains about 2m depth of mollusc-bearing deposits. Radiocarbon and archaeological dating indicate that these deposits accumulated during the Holocene (Preboreal to Subatlantic), although the earliest layers may date from the end of the Pleistocene. [...]
2016 - 10.1344/GeologicaActa2016.14.3.4
Geologica acta, Vol. 14 Núm. 3 (September 2016) , p. 283-298 (Articles)