Il Pliocene del sottosuolo di Casale Monferrato (Piemonte, Italia Nord-Occidentale): dati preliminari
Preliminary lithologic and micropaleontological analisys, carried out on clayey silts cored in the Casale Monferrato area (Piedmont, north–western Italy), documents Middle Pliocene deposits, so far recorded only in deep cores of the western Po Plain but absent in the central and western Piedmont. Th...
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ftunivtorino:oai:iris.unito.it:2318/101274 2023-10-09T21:55:24+02:00 Il Pliocene del sottosuolo di Casale Monferrato (Piemonte, Italia Nord-Occidentale): dati preliminari VIOLANTI, Donata P. SASSONE D. VIOLANTI P. SASSONE 2008 STAMPA http://hdl.handle.net/2318/101274 ita ita volume:53 (Suppl.) firstpage:233 lastpage:264 numberofpages:332 journal:ATTI DEL MUSEO CIVICO DI STORIA NATURALE DI TRIESTE http://hdl.handle.net/2318/101274 info:eu-repo/semantics/closedAccess Pliocene Foraminiferi Piemonte Italia nord-occidentale info:eu-repo/semantics/article 2008 ftunivtorino 2023-09-19T22:29:34Z Preliminary lithologic and micropaleontological analisys, carried out on clayey silts cored in the Casale Monferrato area (Piedmont, north–western Italy), documents Middle Pliocene deposits, so far recorded only in deep cores of the western Po Plain but absent in the central and western Piedmont. The deepest foraminiferal assemblages are referable to the MPl4a subzone, Early Pliocene, on the basis of the occurrence of Globorotalia puncticulata and to the next MPl4b subzone, Middle Pliocene, on the occurrence of Globorotalia puncticulata padana, common in coeval Northern Apennines deposits. Within the same samples, benthic taxa (Cassidulina carinata, Cibicidoides spp. and Uvigerina peregrina) suggest an outer neritic paleodepth. The upper clayey silts are dated to the MPl5a subzone, Middle Pliocene, on the occurrence of Globorotalia bononiensis, G. aemiliana and Bulimina marginata. Benthic foraminiferal assemblages show increasing percentages of Ammonia beccarii and Elphidium spp. and document a shallow outer neritic zone for the uppermost silty layers. Miliolids, very rare in older Pliocene Piedmont deposits, are here common and well diversified. Strong winnowing from the inner neritic zone and hyathuses are inferred in the middle part of the succession. Quantitative variations of warm and cold water planktonic foraminifera suggest climatic changes, more frequent in the middle and upper part of the Pliocene succession. Article in Journal/Newspaper Planktonic foraminifera Università degli studi di Torino: AperTo (Archivio Istituzionale ad Accesso Aperto) |
institution |
Open Polar |
collection |
Università degli studi di Torino: AperTo (Archivio Istituzionale ad Accesso Aperto) |
op_collection_id |
ftunivtorino |
language |
Italian |
topic |
Pliocene Foraminiferi Piemonte Italia nord-occidentale |
spellingShingle |
Pliocene Foraminiferi Piemonte Italia nord-occidentale VIOLANTI, Donata P. SASSONE Il Pliocene del sottosuolo di Casale Monferrato (Piemonte, Italia Nord-Occidentale): dati preliminari |
topic_facet |
Pliocene Foraminiferi Piemonte Italia nord-occidentale |
description |
Preliminary lithologic and micropaleontological analisys, carried out on clayey silts cored in the Casale Monferrato area (Piedmont, north–western Italy), documents Middle Pliocene deposits, so far recorded only in deep cores of the western Po Plain but absent in the central and western Piedmont. The deepest foraminiferal assemblages are referable to the MPl4a subzone, Early Pliocene, on the basis of the occurrence of Globorotalia puncticulata and to the next MPl4b subzone, Middle Pliocene, on the occurrence of Globorotalia puncticulata padana, common in coeval Northern Apennines deposits. Within the same samples, benthic taxa (Cassidulina carinata, Cibicidoides spp. and Uvigerina peregrina) suggest an outer neritic paleodepth. The upper clayey silts are dated to the MPl5a subzone, Middle Pliocene, on the occurrence of Globorotalia bononiensis, G. aemiliana and Bulimina marginata. Benthic foraminiferal assemblages show increasing percentages of Ammonia beccarii and Elphidium spp. and document a shallow outer neritic zone for the uppermost silty layers. Miliolids, very rare in older Pliocene Piedmont deposits, are here common and well diversified. Strong winnowing from the inner neritic zone and hyathuses are inferred in the middle part of the succession. Quantitative variations of warm and cold water planktonic foraminifera suggest climatic changes, more frequent in the middle and upper part of the Pliocene succession. |
author2 |
D. VIOLANTI P. SASSONE |
format |
Article in Journal/Newspaper |
author |
VIOLANTI, Donata P. SASSONE |
author_facet |
VIOLANTI, Donata P. SASSONE |
author_sort |
VIOLANTI, Donata |
title |
Il Pliocene del sottosuolo di Casale Monferrato (Piemonte, Italia Nord-Occidentale): dati preliminari |
title_short |
Il Pliocene del sottosuolo di Casale Monferrato (Piemonte, Italia Nord-Occidentale): dati preliminari |
title_full |
Il Pliocene del sottosuolo di Casale Monferrato (Piemonte, Italia Nord-Occidentale): dati preliminari |
title_fullStr |
Il Pliocene del sottosuolo di Casale Monferrato (Piemonte, Italia Nord-Occidentale): dati preliminari |
title_full_unstemmed |
Il Pliocene del sottosuolo di Casale Monferrato (Piemonte, Italia Nord-Occidentale): dati preliminari |
title_sort |
il pliocene del sottosuolo di casale monferrato (piemonte, italia nord-occidentale): dati preliminari |
publishDate |
2008 |
url |
http://hdl.handle.net/2318/101274 |
genre |
Planktonic foraminifera |
genre_facet |
Planktonic foraminifera |
op_relation |
volume:53 (Suppl.) firstpage:233 lastpage:264 numberofpages:332 journal:ATTI DEL MUSEO CIVICO DI STORIA NATURALE DI TRIESTE http://hdl.handle.net/2318/101274 |
op_rights |
info:eu-repo/semantics/closedAccess |
_version_ |
1779319297330380800 |