Geologica acta

Geologica acta 6 records found  Search took 0.00 seconds. 
1.
12 p, 5.3 MB SIMSAFADIM-CLASTIC : a new approach to mathematical 3D forward simulation modelling for terrigenous and carbonate marine sedimentation / Gratacós, O. (Universitat de Barcelona. Centre Mixt d'Investigació GEOMODELS – Group of Geodynamics and Basin Analysis) ; Bitzer, K. (Universität Bayreuth. Geowissenschaften. Abteilung Geologie) ; Cabrera, L. (Universitat de Barcelona. Deptartament d'Estratigrafia i Paleontologia) ; Roca, E. (Universitat de Barcelona. Deptartament de Geodinàmica i Geofísica)
Most sedimentary modelling programs developed in recent years focus on either terrigenous or carbonate marine sedimentation. Nevertheless, only a few programs have attempted to consider mixed terrigenous-carbonate sedimentation, and most of these are two-dimensional, which is a major restriction since geological processes take place in 3D. [...]
2009 - 10.1344/105.000001390
Geologica acta, Vol. 7, Núm. 3 (Setembre 2009) , p. 311-322  
2.
9 p, 1.6 MB Meaning of the Küçük Menderes graben in the tectonic framework of the central Menderes metamorphic core complex (western Turkey) / Seyitoglu, Gürol (Ankara University. Tectonics Research Group) ; Isik, Veysel (Ankara University. Tectonics Research Group)
Unusually steep, high-angle south-dipping normal faults, that separate the metamorphic rocks of the Menderes massif from the Neogene sedimentary deposits, occur in the northern Küçük Menderes graben in western Turkey. [...]
2009 - 10.1344/105.000001440
Geologica acta, Vol. 7, Núm. 3 (Septiembre 2009) , p. 323-331  
3.
18 p, 2.4 MB Extensional stresses in the Colombian Eastern Cordillera fold-and-thrust belt (northern Andes): insights from 2D finite element modeling / Islam, Rafiqul (Simulation Tectonics Laboratory) ; Hayashi, Daigoro (Simulation Tectonics Laboratory)
Deformation and stress characteristics in the upper crust of the fold-and-thrust belt in the Colombian Eastern Cordillera were investigated by numerical analysis. The structural trend of Colombian Eastern Cordillera has long been considered a possible example of a true contraction orogen. [...]
2009 - 10.1344/105.000001441
Geologica acta, Vol. 7, Núm. 3 (Setembre 2009) , p. 333-350  
4.
12 p, 1.5 MB The podiform chromitites in the Dagküplü and Kavak mines, Eskisehir ophiolite (NW-Turkey) : genetic implications of mineralogical and geochemical data / Uysal, I. (Karadeniz Technical University. Department of Geological Engineering) ; Zaccarini, F. (University of Leoben. Department of Applied Geological Sciences and Geophysics) ; Sadiklar, M.B. (Karadeniz Technical University. Department of Geological Engineering) ; Tarkian, M. (University of Hamburg. Institute of Mineralogy and Petrology) ; Thalhammer, O.A.R. (University of Leoben. Department of Applied Geological Sciences and Geophysics) ; Garuti, G. (University of Modena and Reggio Emilia. Dipartimento di Scienze della Terra)
Mantle tectonites from Eskisehir (NW-Turkey) include high-Cr chromitites with limited variation of Cr#, ranging from 65 to 82. Mg# ratios are between 54 and 72 and chromite grains contain up to 3. 71 wt% Fe2O3 and 0. [...]
2009 - 10.1344/105.000001442
Geologica acta, Vol. 7, Núm. 3 (Setembre 2009) , p. 351-362  
5.
25 p, 5.7 MB Unusual concentration of Early Albian arthropod-bearing amber in the Basque-Cantabrian Basin (El Soplao, Cantabria, Northern Spain) : palaeoenvironmental and palaeobiological implications / Najarro, M. (Instituto Geológico y Minero de España) ; Peñalver, E. (Instituto Geológico y Minero de España) ; Rosales, I. (Instituto Geológico y Minero de España) ; Pérez, de la Fuente, R. (Universitat de Barcelona. Departament d'Estratigrafia, Paleontologia i Geociències Marines) ; Daviero-Gomez, V. (Université Claude-Bernard. UMR 5125 (PEPS) CNRS, Paléobotanique) ; Gómez, B. (Université Claude-Bernard. UMR 5125 (PEPS) CNRS, Paléobotanique) ; Delclòs, X. (Universitat de Barcelona. Departament d'Estratigrafia, Paleontologia i Geociències Marines)
The El Soplao site is a recently-discovered Early Albian locality of the Basque-Cantabrian Basin (northern Spain) that has yielded a number of amber pieces with abundant bioinclusions. The amber-bearing deposit occurs in a non-marine to transitional marine siliciclastic unit (Las Peñosas Formation) that is interleaved within a regressive-transgressive, carbonate-dominated Lower Aptian-Upper Albian marine sequence. [...]
2009 - 10.1344/105.000001443
Geologica acta, Vol. 7, Núm. 3 (Setembre 2009) , p. 363-387  
6.
9 p, 876.8 KB Chalcopyrite dissolution rate law from pH 1 to 3 / Acero Salazar, Patricia (Universidad de Zaragoza. Area de Petrología y Geoquímica) ; Cama Robert, Jordi (Consejo Superior de Investigaciones Científicas (Espanya). Institut de Ciències de la Terra Jaume Almera) ; Ayora, Carles (Consejo Superior de Investigaciones Científicas (Espanya). Institut de Ciències de la Terra Jaume Almera) ; Asta Andrés, María Pilar (Consejo Superior de Investigaciones Científicas (Espanya). Institut de Ciències de la Terra Jaume Almera)
Chalcopyrite dissolution kinetics in the pH range of 1 to 3 were studied by means of long-term flow-through experiments to obtain a dissolution rate law which can be coupled with reactive transport models to forecast Acid Rock Drainage. [...]
2009 - 10.1344/105.000001444
Geologica acta, Vol. 7, Núm. 3 (Setembre 2009) , p. 389-397  

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