Sedimentary and tectonic evolution in the eastern Po-Plain and northern Adriatic Sea area from Messinian to Middle Pleistocene (Italy)
| العنوان: | Sedimentary and tectonic evolution in the eastern Po-Plain and northern Adriatic Sea area from Messinian to Middle Pleistocene (Italy) |
|---|---|
| المؤلفون: | Manlio Ghielmi, Sergio Rogledi, Matteo Minervini, Massimo Rossi, Claudio Nini, Aimone Vignolo |
| المصدر: | RENDICONTI LINCEI. 21:131-166 |
| بيانات النشر: | Springer Science and Business Media LLC, 2010. |
| سنة النشر: | 2010 |
| مصطلحات موضوعية: | Sedimentary depositional environment, Paleontology, Facies, General Earth and Planetary Sciences, Sedimentary rock, Sequence stratigraphy, Progradation, Chronostratigraphy, Sedimentology, General Agricultural and Biological Sciences, Foreland basin, Geology, General Environmental Science |
| الوصف: | In the last 15 years, several Eni-Agip multidisciplinary studies were focused on the buried Messinian–Pleistocene succession of the eastern Po Plain and northern Adriatic Sea. A detailed revision of the biostratigraphy, chronostratigraphy, sedimentology, seismic interpretation and sequence stratigraphy was performed using the very large Eni subsurface dataset including regional 2D and 3D seismic surveys and over 500 deep wells. The new basin-scale geological model of the area is presented in this paper. During the Messinian and the Plio-Pleistocene the eastern sector of the Po Plain and the northern Adriatic Sea were part of the northern Apennine foreland basin. In this time span, the tectono-sedimentary evolution of the area largely coincides with the development of the Po Plain-Adriatic Foredeep (PPAF), of its ramp and foreland areas and of the related northern Apennine thrust-top basins. During latest Tortonian–Pliocene interval, as a consequence of the severe Apennine compressional tectonics, the PPAF underwent four major phases of deformation and depocenter migration towards the foreland (NE). These phases also generated four basin-scale tectonic unconformities referred here as Late Tortonian Unc., Intra-Messinian Unc., Intra-Zanclean Unc. and Gelasian Unc. The Messinian to Pleistocene PPAF sedimentary succession can be subdivided in four allogroups bounded by the basin-scale tectonic-generated unconformities: EM (pre- and syn-evaporitic Messinian), LM (post-evaporitic Messinian–early Pliocene), EP (early-middle Pliocene) and LP (late Pliocene–Pleistocene). The allogroup boundaries are produced by major compressional events generating phases of migration of the foredeep depocenters towards the foreland and abrupt changes in type and distribution of depositional systems. The foredeep succession is mainly composed of turbidites with prevailing highly-efficient Type I turbidite systems. Turbidite sand/sandstone lobes and turbidite basin plain deposits are the most common facies associations. Allogroup EM: the foredeep is subdivided in two different depocenters by the Emilia-Romagna arc. The foredeep succession is represented by the turbidite sandstones and shales of the Bagnolo Fm. Shelfal, marginal marine and evaporitic sediments are deposited in the Veneto and northern Adriatic foreland basin. Allogroup LM: during the post-evaporitic Messinian, the turbidites of the Fusignano Fm. are deposited within the foredeep basin, while most of the foreland area is subaerially exposed and eroded by deep incised-valleys. The base of the Pliocene corresponds to an abrupt eustatic rise. Poorly-efficient turbidites of the Canopo Fm. deposited within the foredeep basin. The foreland is interested by a rapid southward progradation following the transgressive phase. Allogroup EP: activation of the inner thrust of the Ferrara fold-belt and foredeep fragmentation. Deposition of highly-efficient turbidites belonging to the Porto Corsini and “inner” Porto Garibaldi Fms. Deposition of condensed shales in the foreland area. Allogroup LP: complete deformation of the Ferrara folds and of the northern Adriatic thrust-and-fold belt. Onset of a new foredeep basin in the eastern Veneto and northern Adriatic Sea and sedimentation of the highly-efficient turbidites of “outer” Porto Garibaldi and Carola Fms. During the middle Pleistocene the Po Plain progradation leads to the complete filling of the foreland basin. |
| تدمد: | 1720-0776 2037-4631 |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_________::83532efed664dd80fa1eafdfcc1c996b https://doi.org/10.1007/s12210-010-0101-5 |
| حقوق: | CLOSED |
| رقم الأكسشن: | edsair.doi...........83532efed664dd80fa1eafdfcc1c996b |
| قاعدة البيانات: | OpenAIRE |
Find this article in full text from Springer Verlag. | تدمد: | 17200776 20374631 |
|---|