INVESTIGADORES
CABALERI nora Graciela
congresos y reuniones científicas
Título:
Paleoambientes de la Formación Picún Leufú (Límite Jurásico-Cretácico) en su localidad tipo, Cuenca Neuquina, Argentina.
Autor/es:
ARMELLA, CLAUDIA; CABALERI, NORA; LEANZA, HÉCTOR A.
Lugar:
Serra Negra, Brasil
Reunión:
Congreso; 5º Simposio sobre o Cretaceo do Brasil. 1º Simposio sobre el Cretácico de América Latina; 1999
Institución organizadora:
UNESP
Resumen:
Preliminary results of the study of the Picún Leufú Formation (Upper Middle Tithonian/ Lower Berriasian) in its type locality are presented. This unit represents a stage of carbonatic sedimentation with cosmopolitan fauna. In this contribution, microfacial analysis was made in order to interpret the local depositacional model and to make future correlations among different outcrops of this unit. The microfacial analysis and the study of the fauna suggest conditions of well oxygenated ,warm and shallow water over a gentle slope. The carbonatic shelf model is composed by barrier complex, where intertidal facies are dominant. Lagoonal facies are frequent topwards the section with increase of shales and mud sediments.