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Orbital forcing of stratal patterns in an inner platform carbonate sucession: a...
Lézin, C.; Bonnet, L.; Rey, J.; Caetano, P. S.; Gonçalves, P.; Rocha, F.; Rocha, R. B.With an example taken from a late-Hauterivian series of the Lusitanian Basin (Portugal), we will demonstrate the sedimentary record of orbital pattern variations and, consequently, climate variations in an inner platform environment with patterns and isolation changes, allows us to establish 4 major orders of periodicity related to orbital components:- The large cycles ob bed thickness variation, constituted by...
Caracterização mineralógica da sequência sedimentar Ha7 do Cretácico Inferior d...
Gonçalves, P.; Caetano, P. S.; Rocha, F.; Lézin, C.; Rey, J.Mineralogical assemblages, specially clay mineral assemblages, have been widely used in multidisciplinary stratigraphical studies. This paper presents the results obtained in the study of a Lower Cretaceous depositional sequence from the Lusitanian Basin (Portugal). The Upper Hauterivian – Lower Barremian section at Guincho Fort pertains mostly to the Ha7 3rd order depositional sequence defined by J. REY & al. ...
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...
The Transversarium-Bifurcatus Zone boundary at Rocha (Peral area, East-Central ...
Marques, B.; Olóriz, F.; Rodriguez-Tovar, F. J.; Caetano, P. S.This paper represents the first detailed study of the Transversarium-Bifurcatus Zone boundary in the Algarve. The boundary studied in the Peral area is associated with a stratigraphic discontinuity, whose hiatus partially affects the Transversarium-Bifurcatus Zones. A discontinuity was also recognized in the Bifurcatus-Birnammatum Zone boundary, which can be correlated with the traces of a Type II unconformity,...
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