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Geologica acta Encontrados 16 registros  La búsqueda tardó 0.01 segundos. 
1.
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)  
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2.
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)  
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3.
2 p, 30.5 KB Reviewers / Geologica acta
Thank you reviewers.
2021
Geologica acta, Vol. 19 (2021) (Covers)  
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4.
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)  
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5.
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)  
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6.
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)  
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7.
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)  
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8.
14 p, 7.4 MB Late Quaternary subsidence records from the Datça graben and Cnidus ancient city (SW Turkey) : sea-level changes versus tectonics / Özsayin, 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)  
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9.
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 (Universidad de Extremadura. Departamento de Biología Vegetal, Ecología y Ciencias de la Tierra) ; 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)  
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10.
17 p, 2.2 MB Geochemistry of plutons in central Sumatra and their correlation to Southeast Asia tectonic history / Irzon, R. (Center for Geological Survey, Ministry of Energy and Mineral Resources) ; Syafri, I. (Faculty of Geological Engineering, Padjadjan University) ; Suwarna, N. (Geological Agency, Ministry of Energy and Mineral Resources) ; Hutabarat, J. (Faculty of Geological Engineering, Padjadjan University) ; Sendjaja, P. (Center for Geological Survey, Ministry of Energy and Mineral Resources) ; Setiawan, V. E. (Center for Geological Survey, Ministry of Energy and Mineral Resources)
Previous investigations of plutons in Sumatra were focused on age dating with minimum geochemistry composition analysis. The purpose of this study is to define the geochemistry classification of the intrusions in central Sumatra on describing the emplacement mechanism associated with Southeast Asia tectonics. [...]
2021 - 10.1344/GeologicaActa2021.19.9
Geologica acta, Vol. 19 (2021) , p. 1-III (Articles)  
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11.
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)  
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12.
42 p, 12.1 MB Crandallite-rich beds of the Libkovice Member, Most Basin, Czech Republic : climatic extremes or paleogeographic changes at the onset of the Miocene Climatic Optimum? / Mach, Karel (Severočeské doly a.s) ; Rapprich, Vladislav (Czech Geological Survey) ; Faměra, Martin (Institute of Inorganic Chemistry of the Czech Academy of Sciences) ; Havelcová, Martina (Institute of Rock Structure and Mechanics of the Czech Academy of Sciences) ; Grygar, Tomáš Matys (Institute of Inorganic Chemistry of the Czech Academy of Sciences) ; Novotný, Tomáš (Severočeské doly a.s.) ; Řehoř, Michal (Brown Coal Research Institute, Inc.) ; Kochergina, Yulia Erban (Czech Geological Survey)
We describe the occurrence and possible origin of rare beds 1-10cm thick and containing 20-70% of crandallite, a Ca-Al phosphate enriched in Sr and Ba, found within otherwise monotonous clay-rich lacustrine sediments of the Most Basin in the Central-European Neogene Ohře Rift system. [...]
2021 - 10.1344/GeologicaActa2021.19.11
Geologica acta, Vol. 19 (2021) , p. 1-29 (Articles)  
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13.
22 p, 11.1 MB Post-rift extensional tectonics at the edge of a carbonate platform : insights from the Middle Jurassic-Early Cretaceous Monte Giano stratigraphic record (central Apennines, Italy) / Capotorti, Franco (Institue for environmental Research and Protection (ISPRA)) ; Muraro, Cristina (Italian Institute for Environmental Protection and Research)
A new interpretation of the Middle Jurassic-Early Cretaceous paleogeographic evolution of the NW sector of the Latium-Abruzzi carbonate platform facing the Umbria-Marche Basin is proposed, based on Monte Giano area (central Apennines, Italy). [...]
2021 - 10.1344/GeologicaActa2021.19.12
Geologica acta, Vol. 19 (2021) , p. p. 1-23 (Articles)  
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14.
23 p, 6.1 MB Pliocene marine Bivalvia of Vale do Freixo (Pombal, Portugal) : updated taxonomic list and discussion / Pimentel, Ricardo Jorge (Escola Secundária Dr. Joaquim de Carvalho) ; Callapez, Pedro Miguel (Universidade de Coimbra) ; Legoinha, Paulo (NOVA School of Science and Technology)
The exceptional Pliocene marine faunal assemblages of west central Portugal have been known since the late 19th century. They include highly diverse molluscan faunas whose study is far to be completed. [...]
2021 - 10.1344/GeologicaActa2021.19.13
Geologica acta, Vol. 19 (2021) , p. 1-23 (Articles)  
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15.
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 (Universidad de Zaragoza. Departamento de Ciencias de la Tierra) ; Della Porta, Giovanna (Dipartimento di Scienze della Terra "Ardito Desio", Università degli Studi di Milano) ; Bádenas, Beatriz (Universidad de Zaragoza. Departamento de Ciencias de la Tierra) ; Aurell, Marcos (Universidad de Zaragoza. Departamento de Ciencias de la Tierra)
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)  
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16.
39 p, 8.9 MB Systematics of Lutetian larger foraminifera and magneto-biostratigraphy from the South Pyrenean Basin (Sierras Exteriores, Spain) / Silva-Casal, Roi (Universitat de Barcelona. Departament de Dinàmica de la Terra i de l'Oceà) ; Serra-Kiel, Josep (Museu de Ciències Naturals de Barcelona. Departament de Paleontologia) ; Rodríguez-Pintó, Adriana (Freelance Geologist consultor) ; Pueyo, Emilio (Universidad de Zaragoza) ; Aurell, Marcos (Universidad de Zaragoza. Departamento de Ciencias de la Tierra) ; Payros, Aitor (Universidad del País Vasco)
An extense systematic description of the Eocene larger foraminiferal faunas recorded in the South Pyrenean Basin (Sierras Exteriores) is presented herein. The large dataset provided in this work includes both Nummulites and Alveolina species, along with a variety of other porcellaneous and hyaline taxa with lesser biostratigraphic relevance, are represented. [...]
2020 - 10.1344/GeologicaActa2021.19.7
Geologica acta, Vol. 19 (2021) , p. 1-XVII (Articles)
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