Encontrados 13 documentos, a visualizar página 1 de 2
Evolução tectónica mesozóica da Bacia Lusitaniana
Kullberg, J. C.The evolution of the Lusitanian Basin, localized on the western Iberian margin, is closely associated with the first opening phases of the North Atlantic. It persisted from the Late Triassic to the Early Cretaceous, more precisely until the end of the Early Aptian, and its evolution was conditioned by inherited structures from the variscan basement. The part played by the faults that establish its boundaries, a...
Cartografia geológica do Mesozóico na AML e aspectos relativos à normalização
Kullberg, J. C.; Machado, S.Cartografia Geológica Aplicada a Áreas Urbanas ; This paper presents a synthesis of the work related to the revision of sheets of the 1:50 000 geological map of Portugal for the production of a digital version, at different scales, for the Area of Lisbon. Our case study refers to the Mesozoic units. Besides a short introductory approach to previous works carried out by field geologists on the past, considerati...
Arrábida e Sintra
Kullberg, J. C.; Terrinha, P.; Pais, João; Reis, R. P.; Legoinha, P.A Cadeia da Arrábida é a estrutura morfotectónica orogénica, constituída por empilhamentos de cavalgamentos, mais ocidental de todo o orógeno alpino da área emersa da placa litosférica Eurásia. Atentando apenas nos relevos orogénicos alpinos da área emersa de Portugal, as suas estruturas e morfologia tornam-na no mais elegante exemplo de tectónica orogénica alpina em Portugal. A Serra de Sintra constitui um rel...
Os topónimos algarvios na Paleontologia portuguesa
Rocha, R. B.; Kullberg, J. C.; Caetano, P. S.Since the XIX century, Portuguese and foreign geologists have defined 47 new invertebrate taxa (foraminifera, ostracods, coelenterates, brachiopods, gastropods, ammonoids, echinoids), 2 new fossil plant taxa (charophyte and pteridophyte) and 1 ichnofossil, using toponymy from the Algarve; these taxa refer to 1 genera, 47 species and 2 varieties. Besides the Algarve toponym, the most used as specific name, twent...
Modelação de organismos com crescimento logarítmico: aplicação às amonites *
Barroso, F.; Kullberg, J. C.; Rocha, R. B.This work refers to the development of modelling tools to create Ammonite shells in order to produce animated models for scientific dissemination and didactic purposes. In the approach here proposed we assume that the growth of those shells from an initial stage – the protoconch – can be interpreted as a succession of revolutions in turn of a central axis; thus the conch’s section will increase as a non-linear ...
A Bacia Lusitaniana: estratigrafia, paleogeografia e tectónica
Kullberg, J. C.; Rocha, R. B.; Soares, António Ferreira; Rey, J.; Terrinha, Pedro; Callapez, P.; Martins, L.A Bacia Lusitaniana é uma bacia sedimentar que se desenvolveu na Margem Ocidental Ibérica (MOI) durante parte do Mesozóico, e a sua dinâmica enquadra-se no contexto da fragmentação da Pangeia, mais especificamente da abertura do Atlântico Norte. Caracteriza-se como uma bacia distensiva, pertencente a uma margem continental do tipo atlântico de rift não vulcânica. Ocupa mais de 20 000 km2 na parte central da MOI...
Tectónica da região de Sintra
Kullberg, M. C.; Kullberg, J. C.Photo-interpretation of aerial stereopairs of the Sintra region on the approx. 1/32 000 scale together with field work allowed the production of the present Tectonic Map of the Sintra region. It is now possible to separate structures which resulted from two different tectonic events: one, corresponding to the intrusion of the Late Cretaceous Sintra igneous diapir, and the other the Miocene compressive event, th...
Tectónica da cadeia da Arrábida
Kullberg, M. C.; Kullberg, J. C.; Terrinha, P.Geociências, Museu Nac. Hist. Nat. Univ. Lisboa, nº 2, 35-84 ; A tectonic map of the Arrábida fold and thrust belt ( 30 km x 6 km) based on aerial-photo interpretation and field work is presented together with geological cross-sections constrained by seismic and gravimetric data, one restored section and kinematic models for the evolution of the Sesimbra salt-wall and the Palmela gravitational slide. Two rift...
Interpretação tectónica de um conjunto de lineamentos WNW-ESE observados em ima...
Kullberg, M. C.; Kullberg, J. C.The existence of satellite images ofthe West Iberian Margin allowed comparative study of images as a tool applied to structural geology. Interpretation of LANDSAT images of the Lusitanian Basin domain showed the existence of a not previously described WNW-ESE trending set oflineaments. These lineaments are persistent and only observable on small scale images (e.g. approx. 11200000 and 11500 000) with various ra...
Geodynamics of the eastern sector of the Arrábida chain (W Portugal)
Kullberg, M. C.; Kullberg, J. C.; Ribeiro, A.; Phipps, S.N.º4, p.263-267 ; The Arrábida chain - located in the southern segment of the Lusitanian basin - is a S-wards directed fold and thrust belt of Miocene age of deformation. ENE-WSW striking frontal ramps and associated folds are connected to sinistral NNE-SSW and N-S striking lateral ramps, that show left-lateral and SE-wards reverse movements. Both frontal and oblique ramps form imbricate duplexes. Constriction...
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