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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. ...
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