PALEOMAGNETIC AND PALYNOLOGIC INVESTIGATIONS IN THE UPPER VALDARNO BASIN (CENTRAL ITALY): CALIBRATION OF AN EARLY VILLAFRANCHIAN FAUNA

PALEOMAGNETIC AND PALYNOLOGIC INVESTIGATIONS IN THE UPPER VALDARNO BASIN (CENTRAL ITALY): CALIBRATION OF AN EARLY VILLAFRANCHIAN FAUNA

The silty clays embedding an early Villafranchian mammal fauna of the Triversa faunal unit (f.u.) have been paleomagnetically and palynologically studied in a continuous sequence exposed in the Santa Barbara quarry.The study has allowed to date the earliest occurrence in Italy of a faunal assemblage...

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Main Authors: ANDREA ALBIANELLI, AUGUSTO AZZAROLI, ADELE BERTINI, GIOVANNI FICCARELLI, GIOVANNI NAPOLEONE, DANILO TORRE
Format: Article
Language:English
Published: Università degli Studi di Milano 1997-03-01
Series:Rivista Italiana di Paleontologia e Stratigrafia
Online Access:https://riviste.unimi.it/index.php/RIPS/article/view/5285
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spelling doaj-83a6d9207daa4cabaefa580918a238b82020-11-25T02:17:15ZengUniversità degli Studi di MilanoRivista Italiana di Paleontologia e Stratigrafia0035-68832039-49421997-03-01103110.13130/2039-4942/52854607PALEOMAGNETIC AND PALYNOLOGIC INVESTIGATIONS IN THE UPPER VALDARNO BASIN (CENTRAL ITALY): CALIBRATION OF AN EARLY VILLAFRANCHIAN FAUNAANDREA ALBIANELLIAUGUSTO AZZAROLIADELE BERTINIGIOVANNI FICCARELLIGIOVANNI NAPOLEONEDANILO TORREThe silty clays embedding an early Villafranchian mammal fauna of the Triversa faunal unit (f.u.) have been paleomagnetically and palynologically studied in a continuous sequence exposed in the Santa Barbara quarry.The study has allowed to date the earliest occurrence in Italy of a faunal assemblage of this unit and to define the corresponding climatic conditions. The sampled section has provided a magnetic polarity sequence of the late Gauss,where the fossiliferous layer fits the Kaena reversed interval.Its age of ca. 3.1 Ma,during subtropical climate conditions correlatable to the Reuverian of Netherlands, suggests an older age for the beginning of the Villafranchian, possibly associated to a more dramatic scenario able to trigger the faunal turnover.https://riviste.unimi.it/index.php/RIPS/article/view/5285
collection DOAJ
language English
format Article
sources DOAJ
author ANDREA ALBIANELLI
AUGUSTO AZZAROLI
ADELE BERTINI
GIOVANNI FICCARELLI
GIOVANNI NAPOLEONE
DANILO TORRE
spellingShingle ANDREA ALBIANELLI
AUGUSTO AZZAROLI
ADELE BERTINI
GIOVANNI FICCARELLI
GIOVANNI NAPOLEONE
DANILO TORRE
PALEOMAGNETIC AND PALYNOLOGIC INVESTIGATIONS IN THE UPPER VALDARNO BASIN (CENTRAL ITALY): CALIBRATION OF AN EARLY VILLAFRANCHIAN FAUNA
Rivista Italiana di Paleontologia e Stratigrafia
author_facet ANDREA ALBIANELLI
AUGUSTO AZZAROLI
ADELE BERTINI
GIOVANNI FICCARELLI
GIOVANNI NAPOLEONE
DANILO TORRE
author_sort ANDREA ALBIANELLI
title PALEOMAGNETIC AND PALYNOLOGIC INVESTIGATIONS IN THE UPPER VALDARNO BASIN (CENTRAL ITALY): CALIBRATION OF AN EARLY VILLAFRANCHIAN FAUNA
title_short PALEOMAGNETIC AND PALYNOLOGIC INVESTIGATIONS IN THE UPPER VALDARNO BASIN (CENTRAL ITALY): CALIBRATION OF AN EARLY VILLAFRANCHIAN FAUNA
title_full PALEOMAGNETIC AND PALYNOLOGIC INVESTIGATIONS IN THE UPPER VALDARNO BASIN (CENTRAL ITALY): CALIBRATION OF AN EARLY VILLAFRANCHIAN FAUNA
title_fullStr PALEOMAGNETIC AND PALYNOLOGIC INVESTIGATIONS IN THE UPPER VALDARNO BASIN (CENTRAL ITALY): CALIBRATION OF AN EARLY VILLAFRANCHIAN FAUNA
title_full_unstemmed PALEOMAGNETIC AND PALYNOLOGIC INVESTIGATIONS IN THE UPPER VALDARNO BASIN (CENTRAL ITALY): CALIBRATION OF AN EARLY VILLAFRANCHIAN FAUNA
title_sort paleomagnetic and palynologic investigations in the upper valdarno basin (central italy): calibration of an early villafranchian fauna
publisher Università degli Studi di Milano
series Rivista Italiana di Paleontologia e Stratigrafia
issn 0035-6883
2039-4942
publishDate 1997-03-01
description The silty clays embedding an early Villafranchian mammal fauna of the Triversa faunal unit (f.u.) have been paleomagnetically and palynologically studied in a continuous sequence exposed in the Santa Barbara quarry.The study has allowed to date the earliest occurrence in Italy of a faunal assemblage of this unit and to define the corresponding climatic conditions. The sampled section has provided a magnetic polarity sequence of the late Gauss,where the fossiliferous layer fits the Kaena reversed interval.Its age of ca. 3.1 Ma,during subtropical climate conditions correlatable to the Reuverian of Netherlands, suggests an older age for the beginning of the Villafranchian, possibly associated to a more dramatic scenario able to trigger the faunal turnover.
url https://riviste.unimi.it/index.php/RIPS/article/view/5285
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