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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2021-12-22
04:22
23 p, 13.1 MB Middle Triassic high-K calc-alkaline effusive and pyroclastic rocks from the Zagorje-Mid-Transdanubian Zone (Mt. Kuna Gora; NW Croatia) : mineralogy, petrology, geochemistry and tectono-magmatic affinity / Slovenec, Damir (Croatian Geological Survey) ; Šegvić, Branimir (Department of Geosciences. Texas Tech University)
This study brings the mineralogical, petrological, geochemical, Sr and Nd isotope data as well as K-Ar ages used to infer on petrogenesis and geodynamic evolution of Middle Triassic high-K calc-alkaline effusives and their associated pyroclastites of Mt. [...]
2021 - 10.1344/GeologicaActa2021.19.2
Geologica acta, Vol. 19 (2021) , p. 1-23 (Articles)  
2021-12-22
04:21
23 p, 2.3 MB Carbon and oxygen stable isotope record of upper Kimmeridgian shallow-marine ramp carbonates (Iberian Basin, NE Spain) : the imprint of different burial and tectonic histories / Sequero, Cristina (Departamento de Ciencias de la Tierra-IUCA, Universidad de Zaragoza) ; Della Porta, Giovanna (Dipartimento di Scienze della Terra "Ardito Desio", Università degli Studi di Milano) ; Bádenas, Beatriz (Departamento de Ciencias de la Tierra-IUCA, Universidad de Zaragoza) ; Aurell, Marcos (Departamento de Ciencias de la Tierra-IUCA, Universidad de Zaragoza)
Bulk carbon and oxygen stable isotopes of ancient shallow-marine carbonates can record the effects of multiple palaeoenvironmental factors, but also the imprint of several post-depositional processes, which may alter the original marine isotopic composition. [...]
Bulk carbon and oxygen stable isotopes of ancient shallow-marine carbonates can record the effects of multiple palaeoenvironmental factors, but also the imprint of several post-depositional processes, which may alter the original marine isotopic composition. [...]

2021 - 10.1344/GeologicaActa2021.19.14
Geologica acta, Vol. 19 (2021) , p. 1-23 (Articles)  
2021-12-22
04:21
14 p, 7.4 MB Late Quaternary subsidence records from the Datça graben and Cnidus ancient city (SW Turkey) : sea-level changes versus tectonics / Özsayın, Erman (Hacettepe University, Dept. of Geological Engineering) ; Üner, Serkan (Van Yüzüncü Yıl University, Dept. of Geological Engineering) ; Kahraman, Burcu (Hacettepe University, Dept. of Geological Engineering)
The Datça Graben at southwestern Anatolia is a WNW-trending, seismically active depression, evolving since Pliocene. This tectonic activity is controlled by normal faults, which have effected ancient settlements. [...]
2021 - 10.1344/GeologicaActa2021.19.6
Geologica acta, Vol. 19 (2021) , p. 1-14 (Articles)  
2021-12-22
04:21
23 p, 9.6 MB First report of Devonian corals from the Bitlis-Pörtürge Massif (SE Turkey) : a rare occurrence of corals on the northern margin of Gondwana / Denayer, Julien (University of Liège. Evolution and Diversity Dynamics Lab) ; Hoşgör, Izzet (Çalık Petrol, Oil & Gas)
The Bitlis-Pörtürge Massif of SE Turkey is a metamorphic belt separating the Arabian Plate from the Taurides. It includes non-metamorphic Palaeozoic sequence, locally fossiliferous. Here is reported the first Upper Devonian rugose and tabulate coral from the Meydan Formation, composed of Frechastraea schafferi, Peneckiella cf. [...]
2021 - 10.1344/GeologicaActa2021.19.1
Geologica acta, Vol. 19 (2021) , p. 1-11 (Articles)  
2021-12-22
04:21
17 p, 10.2 MB Early-Middle Frasnian (Late Devonian) carbon isotope Event in the Timan-Pechora Basin (Chernyshev Swell, Pymvashor River section, North Cis-Urals, Russia) / Kotik, Ivan S. (Institute of Geology of Komi Science Centre of the Ural Branch of the Russian Academy of Sciences) ; Zhuravlev, Andrey V. (Institute of Geology of Komi Science Centre of the Ural Branch of the Russian Academy of Sciences) ; Maydl, Tatiana V. (Institute of Geology of Komi Science Centre of the Ural Branch of the Russian Academy of Sciences) ; Bushnev, Dmitriy A. (Institute of Geology of Komi Science Centre of the Ural Branch of the Russian Academy of Sciences) ; Smoleva, Irina V. (Institute of Geology of Komi Science Centre of the Ural Branch of the Russian Academy of Sciences)
Biostratigraphically constrained carbonate (δ13Ccarb) and organic carbon (δ13Corg) variations in the Early-Middle Frasnian boundary interval in the Pymvashor River section (Timan-Pechora Basin, Cis-Urals, in the far north of European Russia) were considered. [...]
2021 - 10.1344/GeologicaActa2021.19.3
Geologica acta, Vol. 19 (2021) , p. 1-17 (Articles)  
2021-12-22
04:21
11 p, 5.1 MB Critical analysis of Mediterranean sea level limit cycles during the Messinian salinity crisis / Baum, Mark M. (Department of Earth and Planetary Sciences, Harvard University)
The Messinian Salinity Crisis (5. 97-5. 33Ma) may be one of the most significant periods of sea-level change in recent geologic history. During this period, evaporite deposition throughout the Mediterranean basin records a series of dramatic environmental changes as flow through the Strait of Gibraltar was restricted. [...]
2021 - 10.1344/GeologicaActa2021.19.10
Geologica acta, Vol. 19 (2021) , p. 1-11 (Articles)  
2021-12-22
04:21
21 p, 7.5 MB Silt-sized sediments and gypsum on surface formations in the Ebro Basin : a disambiguation of the term "gypsiferous silts" / Poch, Rosa M. (Universitat de Lleida. Departament de Medi Ambient i Ciències del Sòl) ; Rodríguez-Ochoa, Rafael (Universitat de Lleida. Departament de Medi Ambient i Ciències del Sòl) ; Artieda, Octavio (Departamento de Biología Vegetal, Ecología y Ciencias de la Tierra - IACYS, Universidad de Extremadura) ; Balasch, Josep Carles (Universitat de Lleida. Departament de Medi Ambient i Ciències del Sòl) ; Boixadera, Jaume (Generalitat de Catalunya. Departament d'Agricultura, Ramaderia, Pesca i Alimentació (DARP))
The term "gypsiferous silts" has been used since the 1960s by many authors, but it has relied on unclear, am-biguous criteria that attributed aeolian, colluvial or alluvial origins to these materials. [...]
2021 - 10.1344/GeologicaActa2021.19.8
Geologica acta, Vol. 19 (2021) , p. 1-21 (Articles)  
2021-12-22
04:21
19 p, 6.8 MB Pre-Variscan granitoids with adakitic signature at west Getic basement of the South Carpathians (Romania) : constraints on genesis and timing based on whole-rock and zircon geochemistry / Dobrescu, Anca (Department of Regional Geology, Geological Institute of Romania)
Research on two strata-like intrusions from Slatina-Timiş (STG) and Buchin (BG) at West Getic Domain of the South Carpathians (Semenic Mountains) identified granitoids with adakitic signature in a continental collision environment. [...]
2021 - 10.1344/GeologicaActa2021.19.4
Geologica acta, Vol. 19 (2021) , p. 1-II (Articles)  
2021-12-22
04:21
23 p, 12.6 MB 40Ar/Ar30 geochronology of Burdigalian paleobotanical localities in the central Paratethys (south Slovakia) / Šarinová, K. (Comenius University. Department of geology and paleontology.) ; Rybár, S. (Comenius University. Department of geology and paleontology. Energy & Geoscience Inst. at University of Utah.) ; Jourdan, F. (Western Australian Argon Isotope Facility and John de Laeter Centre, Curtin University. School of Earth and Planetary, SSTC and TIGeR, Curtin University.) ; Frew, A. (Western Australian Argon Isotope Facility and John de Laeter Centre, Curtin University.) ; Mayers, C. (Western Australian Argon Isotope Facility and John de Laeter Centre, Curtin University) ; Kováčová, M. (Comenius University. Department of geology and paleontology.) ; Lichtman, B. (Comenius University. Department of geology and paleontology.) ; Nováková, P. (Comenius University. Department of geology and paleontology.) ; Kováč, M. (Comenius University. Department of geology and paleontology.)
The Lipovany and Mučín paleobotanical localities contain important floral associations within the tuff horizons, which were used for determination of subtropical to tropical climatic conditions during Early Miocene. [...]
2021 - 10.1344/GeologicaActa2021.19.5
Geologica acta, Vol. 19 (2021) , p. 1-IV. (Articles)  
2021-12-22
04:21
23 p, 9.6 MB The enriched Variscan lithosphere of NE Iberia : data from postcollisional Permian calc-alkaline lamprophyre dykes of Les Guilleries / Mellado, Esteban (Universitat Autònoma de Barcelona. Departament de Geologia) ; Corbella i Cordomí, Mercè (Universitat Autònoma de Barcelona. Departament de Geologia) ; Navarro Ciurana, Didac (Universitat Autònoma de Barcelona. Departament de Geologia) ; Kylander-Clark, Andrew (University of California)
Post-collisional mafic dykes crosscut the Paleozoic metamorphic basement and late-Variscan plutons in Les Guilleries massif (Catalan Coastal Ranges, NE Iberia). The predominance of mafic phenocrysts, porphyritic texture, abundant amphibole, high MgO and volatile content, together with crustal-like trace-element patterns indicate that the dykes correspond to calc-alkaline lamprophyres, mainly spessartites. [...]
2021 - 10.1344/GeologicaActa2021.19.15
Geologica acta, Vol. 19 (2021) , p. 1-23 (Articles)