Geologica Acta
Geologica Acta (ISSN 1695-6133 / ISSN electrònic 1696-5728) és una revista institucional i d'accès obert, internacional i amb un perfil generalista de Ciències de la Terra. La revista acull tant articles de tipus conceptual com regional, amb especial èmfasi en les zones de la Mediterrània, Sud Amèrica i el Carib, però sense deixar de considerar contribucions de qualsevol regió del món. Igualment s'incentiva la publicació de números temàtics que donin a conèixer els resultats de projectes o reunions científiques internacionals.

 

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2018-10-05
10:16
2.0 KB Chemical and stable isotope composition (18O/16O, 2H/1H) of formation waters from the Carabobo Oilfield, Venezuela. / Boschetti, Tiziano (Università di Parma. Dipartamento di Scienze ambientali) ; Angulo, B. (Instituto Tecnológico Venezolano del Petróleo (INTEVEP). Departamento de Investigación Estratégica en Exploración.) ; Quintero, F. (Instituto Tecnológico Venezolano del Petróleo (INTEVEP). Departamento de Investigación Estratégica en Exploración.) ; Volcán, J. (Universidad Central de Venezuela. Instituto de Ciencias de la Tierra) ; Casalins, A. (Estudios Integrados, Petrolera Sinovensa (Barcelona, Veneçuela))
In this short note, we present the first data on stable isotope composition of the oilfield waters from Carabobo area of the Faja Petrolífera del Orinoco “Hugo Chávez” (Orinoco Oil Belt). From a chemical point of view, the formation waters show a main Na-Cl level (TDS up to 30g/l) with a dilution trend toward Na-HCO3 composition (down to 1g/l). [...]
2018 - 10.1344/GeologicaActa2018.16.3.2
Geologica acta, Vol. 16 Núm. 3 (September 2018) , p. 257-264, I-III (Short note)  
2018-10-05
10:16
2.0 KB Integrated approach for zonation of a mid-Cenomanian carbonate reservoir in a sequence stratigraphic framework. / Jodeyri-Agaii, R. (University of Tehran. School of Geology) ; Rahimpour-Bonab, H. (University of Tehran. School of Geology) ; Tavakoli, V. (University of Tehran. School of Geology) ; Kadkhodaie-Ilkhch, R. (University of Tabriz (Iran). Department of Earth Science) ; Yousefpour, M. -R. (Iranian Offshore Oil Company)
The mid-Cenomanian Mishrif Formation (Fm. ) is considered as one of the most important rudist-bearing reservoir horizons in the Sirri Oil Fields of the Persian Gulf. Due to the general heterogeneity of carbonate reservoirs, the use of an integrated approach is helpful for investigating porosity and permeability distribution along with recognizing controlling pore system factors in the reservoir. [...]
2018 - 10.1344/GeologicaActa2018.16.3.5
Geologica acta, Vol. 16 Núm. 3 (September 2018) , p. 321-337, I-VI (Articles)  
2018-10-05
10:16
27 p, 5.1 MB Geochemistry and petrogenesis of metabasites from the Gol-e-Gohar Complex in southern Sanandaj-Sirjan metamorphic zone, South of Iran; Evidences for crustal extension and magmatism at early Palaeozoic. / Fatehi, H. (Shahid Bahonar University of Kerman (Iran). Department of Geology) ; Ahmadipour, H. (Shahid Bahonar University of Kerman (Iran). Department of Geology)
In Gol-e-Gohar metamorphic Complex from south-eastern Sanandaj-Sirjan metamorphic zone (Kerman province, Iran), there are two types of metabasites, wich contain layered metamorphosed lava flows and younger meta-gabbros. [...]
2018 - 10.1344/GeologicaActa2018.16.3.4
Geologica acta, Vol. 16 Núm. 3 (September 2018) , p. 293-319 (Articles)  
2018-10-05
10:16
40 p, 5.7 MB Neogene-Quaternary onshore record in the lower Ebro river incised palaeovalley (Ebro margin, Catalan Coastal Range, NE Iberia) / Arasa-Tuliesa, A. (Grup EbreRecerca) ; Cabrera Pérez, Lluís (Universitat de Barcelona. Departament de Dinàmica de la Terra i de l’Oceà.)
The lower Ebro is a bedrock-alluvial mixed incised valley with a persistent degradational stacking architecture developed from latest Serravallian(?) to Holocene. This degradational pattern was probably controlled by isostatic rebound in NE Iberia and punctuated by major relative sea level changes that temporally accentuated or attenuated the palaeovalley entrenchment and sediment retention. [...]
2018 - 10.1344/GeologicaActa2018.16.3.3
Geologica acta, Vol. 16 Núm. 3 (September 2018) , p. 265-292, I-XII (Articles)  
2018-10-05
10:16
19 p, 5.2 MB Petrography and geochemistry of late- to post-Variscan vaugnerite series rocks and calc-alkaline lamprophyres within a cordierite-bearing monzogranite (the Sierra Bermeja Pluton, southern Iberian Massif). / Errandonea, Jon (Universidad del País Vasco. Departamento de Minerología y Petrología) ; Sarrionandia Eguidazu, Fernando (Universidad del País Vasco. Departamento de Geodinámica) ; Carracedo-Sánchez, Manuel (Department of Mineralogy and Petrology, Faculty of Science and Technology, University of the Basque Country (UPV/EHU)) ; Gil Ibarguchi, José Ignacio (Universidad del País Vasco. Departamento de Minerología y Petrología) ; Eguiluz Alarcón, Luis (Universidad del País Vasco. Departamento de Geodinámica)
The Sierra Bermeja Pluton (southern Central Iberian Zone, Iberian Massif) is a late-Variscan intrusive constituted by cordierite-bearing peraluminous monzogranites. Detailed field mapping has allowed to disclose the presence of several NE–SW trending longitudinal composite bodies, formed by either aphanitic or phaneritic mesocratic rocks. [...]
2018 - 10.1344/GeologicaActa2018.16.3.1
Geologica acta, Vol. 16 Núm. 3 (September 2018) , p. 237-255 (Articles)  
2018-07-04
05:06
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)  
2018-07-04
05:06
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)  
2018-07-04
05:06
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)  
2018-07-04
05:06
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)  
2018-07-04
05:06
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)