MEDITERRANEAN PLIOCENE BIOCHRONOLOGY: AN HIGH RESOLUTION RECORD BASED ON QUANTITATIVE PLANKTONIC FORAMINIFERA DISTRIBUTION
Quantitative analysis of planktonic foraminiferal assemblages from Mediterranean Pliocene sections evidenced several fluctuations in abundance which for 4 taxonomic units (Globorotalia inflata group, Globigerinoides ruber, Globigerinoides obliquus and Globigerinoides quadrilobatus) occur cyclically....
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Milano University Press
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ftdoajarticles:oai:doaj.org/article:0b09610b822c46bfb21e36d9f141a42e 2023-10-01T03:57:58+02:00 MEDITERRANEAN PLIOCENE BIOCHRONOLOGY: AN HIGH RESOLUTION RECORD BASED ON QUANTITATIVE PLANKTONIC FORAMINIFERA DISTRIBUTION RODOLFO SPROVIERI 2017-08-01T00:00:00Z https://doi.org/10.13130/2039-4942/8941 https://doaj.org/article/0b09610b822c46bfb21e36d9f141a42e EN eng Milano University Press https://riviste.unimi.it/index.php/RIPS/article/view/8941 https://doaj.org/toc/0035-6883 https://doaj.org/toc/2039-4942 0035-6883 2039-4942 doi:10.13130/2039-4942/8941 https://doaj.org/article/0b09610b822c46bfb21e36d9f141a42e Rivista Italiana di Paleontologia e Stratigrafia, Vol 98, Iss 1 (2017) Pliocene Planktonic Foraminifera Cyclostratigraphy Biostratigraphy Geology QE1-996.5 Paleontology QE701-760 article 2017 ftdoajarticles https://doi.org/10.13130/2039-4942/8941 2023-09-03T00:47:22Z Quantitative analysis of planktonic foraminiferal assemblages from Mediterranean Pliocene sections evidenced several fluctuations in abundance which for 4 taxonomic units (Globorotalia inflata group, Globigerinoides ruber, Globigerinoides obliquus and Globigerinoides quadrilobatus) occur cyclically. Estimate of cycle periodicity, using paleomagnetically or biochronologically absolute dated calibration points, proves that abundance fluctuations display a periodicity of about 20 kyr in the lower part of the Pliocene and of about 40 kyr in the upper part of the Pliocene, thus correlatable to the precession and obliquity astronomical cycles respectively. Based on the sequence of abundance fluctuations a precise age estimate was obtained for several biostratigraphic events. Comparison of the ages estimated of the Late Pliocene bio-events between the Mediterranean and North Atlantic regions shows that possible diachroneities occur within a range not greater than 0.1 MA. A more detailed biostratigraphic scheme for the planktonic foraminifera, including four new subzones, is proposed for the Mediterranean area. Article in Journal/Newspaper North Atlantic Planktonic foraminifera Directory of Open Access Journals: DOAJ Articles |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
Pliocene Planktonic Foraminifera Cyclostratigraphy Biostratigraphy Geology QE1-996.5 Paleontology QE701-760 |
spellingShingle |
Pliocene Planktonic Foraminifera Cyclostratigraphy Biostratigraphy Geology QE1-996.5 Paleontology QE701-760 RODOLFO SPROVIERI MEDITERRANEAN PLIOCENE BIOCHRONOLOGY: AN HIGH RESOLUTION RECORD BASED ON QUANTITATIVE PLANKTONIC FORAMINIFERA DISTRIBUTION |
topic_facet |
Pliocene Planktonic Foraminifera Cyclostratigraphy Biostratigraphy Geology QE1-996.5 Paleontology QE701-760 |
description |
Quantitative analysis of planktonic foraminiferal assemblages from Mediterranean Pliocene sections evidenced several fluctuations in abundance which for 4 taxonomic units (Globorotalia inflata group, Globigerinoides ruber, Globigerinoides obliquus and Globigerinoides quadrilobatus) occur cyclically. Estimate of cycle periodicity, using paleomagnetically or biochronologically absolute dated calibration points, proves that abundance fluctuations display a periodicity of about 20 kyr in the lower part of the Pliocene and of about 40 kyr in the upper part of the Pliocene, thus correlatable to the precession and obliquity astronomical cycles respectively. Based on the sequence of abundance fluctuations a precise age estimate was obtained for several biostratigraphic events. Comparison of the ages estimated of the Late Pliocene bio-events between the Mediterranean and North Atlantic regions shows that possible diachroneities occur within a range not greater than 0.1 MA. A more detailed biostratigraphic scheme for the planktonic foraminifera, including four new subzones, is proposed for the Mediterranean area. |
format |
Article in Journal/Newspaper |
author |
RODOLFO SPROVIERI |
author_facet |
RODOLFO SPROVIERI |
author_sort |
RODOLFO SPROVIERI |
title |
MEDITERRANEAN PLIOCENE BIOCHRONOLOGY: AN HIGH RESOLUTION RECORD BASED ON QUANTITATIVE PLANKTONIC FORAMINIFERA DISTRIBUTION |
title_short |
MEDITERRANEAN PLIOCENE BIOCHRONOLOGY: AN HIGH RESOLUTION RECORD BASED ON QUANTITATIVE PLANKTONIC FORAMINIFERA DISTRIBUTION |
title_full |
MEDITERRANEAN PLIOCENE BIOCHRONOLOGY: AN HIGH RESOLUTION RECORD BASED ON QUANTITATIVE PLANKTONIC FORAMINIFERA DISTRIBUTION |
title_fullStr |
MEDITERRANEAN PLIOCENE BIOCHRONOLOGY: AN HIGH RESOLUTION RECORD BASED ON QUANTITATIVE PLANKTONIC FORAMINIFERA DISTRIBUTION |
title_full_unstemmed |
MEDITERRANEAN PLIOCENE BIOCHRONOLOGY: AN HIGH RESOLUTION RECORD BASED ON QUANTITATIVE PLANKTONIC FORAMINIFERA DISTRIBUTION |
title_sort |
mediterranean pliocene biochronology: an high resolution record based on quantitative planktonic foraminifera distribution |
publisher |
Milano University Press |
publishDate |
2017 |
url |
https://doi.org/10.13130/2039-4942/8941 https://doaj.org/article/0b09610b822c46bfb21e36d9f141a42e |
genre |
North Atlantic Planktonic foraminifera |
genre_facet |
North Atlantic Planktonic foraminifera |
op_source |
Rivista Italiana di Paleontologia e Stratigrafia, Vol 98, Iss 1 (2017) |
op_relation |
https://riviste.unimi.it/index.php/RIPS/article/view/8941 https://doaj.org/toc/0035-6883 https://doaj.org/toc/2039-4942 0035-6883 2039-4942 doi:10.13130/2039-4942/8941 https://doaj.org/article/0b09610b822c46bfb21e36d9f141a42e |
op_doi |
https://doi.org/10.13130/2039-4942/8941 |
_version_ |
1778530228715388928 |