Integrated stratigraphy of St. Thomas Section (Malta): new preliminary data on potentially section for the Burdigalian GSSP
The GSSP of the Burdigalian stage has still not been ratified and has been temporarily placed in correspondence of the First Occurrence (FO) of the calcareous nannofossil species Helicosphaera ampliaperta at 20.43 Ma by Lourens et al. (2004). Here we present the preliminary integrated bio-magnetostr...
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University of Edinburgh
2012
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ftunivsiena:oai:usiena-air.unisi.it:11365/41517 2024-01-28T10:08:44+01:00 Integrated stratigraphy of St. Thomas Section (Malta): new preliminary data on potentially section for the Burdigalian GSSP BALDASSINI, NICCOLO' FORESI, LUCA MARIA MAZZEI, ROBERTO SALVATORINI, GIANFRANCO VERDUCCI, MARINA Caricchi C. Da Prato S. Di Stefano A. Ferraro L. Lirer F. Sagnotti L. Darling K., Evans K., Bird C., Schweizer M., Russon T. Baldassini, Niccolo' Caricchi, C. Da Prato, S. Di Stefano, A. Ferraro, L. Foresi, LUCA MARIA Lirer, F. Mazzei, Roberto Salvatorini, Gianfranco Sagnotti, L. Verducci, Marina 2012 STAMPA http://hdl.handle.net/11365/41517 eng eng University of Edinburgh country:GBR place:Edinburgh ispartofbook:The micropaleontological Society - Foraminiferal and nannofossil Groups - Joint Meeting 2012 Interdisciplinary advances in foraminiferal and nannofossil research firstpage:9 lastpage:10 numberofpages:2 http://hdl.handle.net/11365/41517 info:eu-repo/semantics/closedAccess planktonic foraminifera calcareous nannofossil Miocene Burdigalian GSSP Matla Biostratigraphy info:eu-repo/semantics/conferenceObject 2012 ftunivsiena 2024-01-02T23:15:27Z The GSSP of the Burdigalian stage has still not been ratified and has been temporarily placed in correspondence of the First Occurrence (FO) of the calcareous nannofossil species Helicosphaera ampliaperta at 20.43 Ma by Lourens et al. (2004). Here we present the preliminary integrated bio-magnetostratigraphic results obtained from the study of the early Miocene St. Thomas section, outcropping on the southern coast of Malta Island (central Mediterranean basin). In this area, the section represents the whole Middle Globigerina Limestone member (the intermediate member of the Globigerina Limestone formation, Chattian – Langhian in age), from the basal phosphate rich bed (the QCB of Rose et al., 1992) up to the highly eroded surface (the TMGLOg of Gruszczynsky et al., 2008). The succession, ~90m thick, is composed of alternating marls and calcareous marls and 744 samples were collected by a hand-core driller system, with a stratigraphic spacing of ~10 cm. Micropalaeontological assemblages are rich and often well-preserved and suitable for a quantitative analysis; furthermore, magnetostratigraphical analyses were also carried out and produced reliable results. These analysis allowed us to attribute the St. Thomas deposits to the MMi2 planctonic foraminiferal Zone of Iaccarino et al. (2007) and to the calcareous nannofossil MNN2a Zone (upper part) – MNN4a Zone (lowermost part) interval of Fornaciari and Rio (1996). In terms of magnetostratigraphy, it extends from the Magnetochron C6n to the Magnetochron C5Dn. The well exposed outcrops, the lithological cyclicity, the rich and well preserved calcareous plankton assemblages and the reliable magnetostratigraphic data make this section potentially suitable for high-resolution stratigraphic, cyclostratigraphic and astrochronologic studies. Conference Object Planktonic foraminifera Università degli Studi di Siena: USiena air |
institution |
Open Polar |
collection |
Università degli Studi di Siena: USiena air |
op_collection_id |
ftunivsiena |
language |
English |
topic |
planktonic foraminifera calcareous nannofossil Miocene Burdigalian GSSP Matla Biostratigraphy |
spellingShingle |
planktonic foraminifera calcareous nannofossil Miocene Burdigalian GSSP Matla Biostratigraphy BALDASSINI, NICCOLO' FORESI, LUCA MARIA MAZZEI, ROBERTO SALVATORINI, GIANFRANCO VERDUCCI, MARINA Caricchi C. Da Prato S. Di Stefano A. Ferraro L. Lirer F. Sagnotti L. Integrated stratigraphy of St. Thomas Section (Malta): new preliminary data on potentially section for the Burdigalian GSSP |
topic_facet |
planktonic foraminifera calcareous nannofossil Miocene Burdigalian GSSP Matla Biostratigraphy |
description |
The GSSP of the Burdigalian stage has still not been ratified and has been temporarily placed in correspondence of the First Occurrence (FO) of the calcareous nannofossil species Helicosphaera ampliaperta at 20.43 Ma by Lourens et al. (2004). Here we present the preliminary integrated bio-magnetostratigraphic results obtained from the study of the early Miocene St. Thomas section, outcropping on the southern coast of Malta Island (central Mediterranean basin). In this area, the section represents the whole Middle Globigerina Limestone member (the intermediate member of the Globigerina Limestone formation, Chattian – Langhian in age), from the basal phosphate rich bed (the QCB of Rose et al., 1992) up to the highly eroded surface (the TMGLOg of Gruszczynsky et al., 2008). The succession, ~90m thick, is composed of alternating marls and calcareous marls and 744 samples were collected by a hand-core driller system, with a stratigraphic spacing of ~10 cm. Micropalaeontological assemblages are rich and often well-preserved and suitable for a quantitative analysis; furthermore, magnetostratigraphical analyses were also carried out and produced reliable results. These analysis allowed us to attribute the St. Thomas deposits to the MMi2 planctonic foraminiferal Zone of Iaccarino et al. (2007) and to the calcareous nannofossil MNN2a Zone (upper part) – MNN4a Zone (lowermost part) interval of Fornaciari and Rio (1996). In terms of magnetostratigraphy, it extends from the Magnetochron C6n to the Magnetochron C5Dn. The well exposed outcrops, the lithological cyclicity, the rich and well preserved calcareous plankton assemblages and the reliable magnetostratigraphic data make this section potentially suitable for high-resolution stratigraphic, cyclostratigraphic and astrochronologic studies. |
author2 |
Darling K., Evans K., Bird C., Schweizer M., Russon T. Baldassini, Niccolo' Caricchi, C. Da Prato, S. Di Stefano, A. Ferraro, L. Foresi, LUCA MARIA Lirer, F. Mazzei, Roberto Salvatorini, Gianfranco Sagnotti, L. Verducci, Marina |
format |
Conference Object |
author |
BALDASSINI, NICCOLO' FORESI, LUCA MARIA MAZZEI, ROBERTO SALVATORINI, GIANFRANCO VERDUCCI, MARINA Caricchi C. Da Prato S. Di Stefano A. Ferraro L. Lirer F. Sagnotti L. |
author_facet |
BALDASSINI, NICCOLO' FORESI, LUCA MARIA MAZZEI, ROBERTO SALVATORINI, GIANFRANCO VERDUCCI, MARINA Caricchi C. Da Prato S. Di Stefano A. Ferraro L. Lirer F. Sagnotti L. |
author_sort |
BALDASSINI, NICCOLO' |
title |
Integrated stratigraphy of St. Thomas Section (Malta): new preliminary data on potentially section for the Burdigalian GSSP |
title_short |
Integrated stratigraphy of St. Thomas Section (Malta): new preliminary data on potentially section for the Burdigalian GSSP |
title_full |
Integrated stratigraphy of St. Thomas Section (Malta): new preliminary data on potentially section for the Burdigalian GSSP |
title_fullStr |
Integrated stratigraphy of St. Thomas Section (Malta): new preliminary data on potentially section for the Burdigalian GSSP |
title_full_unstemmed |
Integrated stratigraphy of St. Thomas Section (Malta): new preliminary data on potentially section for the Burdigalian GSSP |
title_sort |
integrated stratigraphy of st. thomas section (malta): new preliminary data on potentially section for the burdigalian gssp |
publisher |
University of Edinburgh |
publishDate |
2012 |
url |
http://hdl.handle.net/11365/41517 |
genre |
Planktonic foraminifera |
genre_facet |
Planktonic foraminifera |
op_relation |
ispartofbook:The micropaleontological Society - Foraminiferal and nannofossil Groups - Joint Meeting 2012 Interdisciplinary advances in foraminiferal and nannofossil research firstpage:9 lastpage:10 numberofpages:2 http://hdl.handle.net/11365/41517 |
op_rights |
info:eu-repo/semantics/closedAccess |
_version_ |
1789337803266457600 |