ABSTRACT The southeastern sector of the Po Plain Basin evolved, during the Bartonian-Holocene interval, from a deep marine basin characterised by hemipelagic deposition, to a foredeep basin progressively filled by turbiditic sediments. The evolution of the depositional setting was inferred by the analysis of the geohistory curves. They are built, using the BasinMod 1D program, on the basis of lithostratigraphic, sedimentological and micropaleontological data obtained by the study of the Cenozoic succession drilled by the Gallare 1 and Codigoro 1 wells. The chronological and paleobathymetric constraints for the geohistory analysis were provided by the study of both planktonic and benthic foraminiferal and calcareous nannofossil assemblages of the succession drilled. Our results together with lithostratigraphic and sedimentological data from the literature were used to reconstruct the subsidence/ uplift history and the evolution of the sedimentary infill of the basin. Moreover the propagation speed of the Northern Apennine foredeep was calculated at 2.5 cm/y on the basis of the relative position of the wells studied located along a SW-NE transect consistent with the Northern Apennine vergence.
Micropaleontologia e geohistory della successione cenozoica della Pianura Padana sudorientale (dati di sottosuolo)
MANCIN, NICOLETTA;COBIANCHI, MIRIAM
2004-01-01
Abstract
ABSTRACT The southeastern sector of the Po Plain Basin evolved, during the Bartonian-Holocene interval, from a deep marine basin characterised by hemipelagic deposition, to a foredeep basin progressively filled by turbiditic sediments. The evolution of the depositional setting was inferred by the analysis of the geohistory curves. They are built, using the BasinMod 1D program, on the basis of lithostratigraphic, sedimentological and micropaleontological data obtained by the study of the Cenozoic succession drilled by the Gallare 1 and Codigoro 1 wells. The chronological and paleobathymetric constraints for the geohistory analysis were provided by the study of both planktonic and benthic foraminiferal and calcareous nannofossil assemblages of the succession drilled. Our results together with lithostratigraphic and sedimentological data from the literature were used to reconstruct the subsidence/ uplift history and the evolution of the sedimentary infill of the basin. Moreover the propagation speed of the Northern Apennine foredeep was calculated at 2.5 cm/y on the basis of the relative position of the wells studied located along a SW-NE transect consistent with the Northern Apennine vergence.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
