AN EXPANDED CRETACEOUS-TERTIARY TRANSITION IN A PELAGIC SETTING OF THE SOUTHERN ALPS (CENTRAL-WESTERN TETHYS).
An integrated micropalaeontological (planktonic foraminifera and calcareous nannofossils), mineralogical and stable isotope investigation was carried out across the Cretaceous/Tertiary (K/T) boundary in a previously undescribed hemipelagic section (Forada section) cropping out in the Piave River Val...
Published in: | Palaeogeography, Palaeoclimatology, Palaeoecology |
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Format: | Article in Journal/Newspaper |
Language: | English |
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2007
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Online Access: | https://hdl.handle.net/11577/2430232 https://doi.org/10.1016/j.palaeo.2007.02.044 |
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ftunivpadovairis:oai:www.research.unipd.it:11577/2430232 2024-04-14T08:18:30+00:00 AN EXPANDED CRETACEOUS-TERTIARY TRANSITION IN A PELAGIC SETTING OF THE SOUTHERN ALPS (CENTRAL-WESTERN TETHYS). FORNACIARI, ELIANA GIUSBERTI, LUCA LUCIANI V TATEO F AGNINI, CLAUDIA BACKMAN J ODDONE M RIO, DOMENICO Fornaciari, Eliana Giusberti, Luca Luciani, V Tateo, F Agnini, Claudia Backman, J Oddone, M Rio, Domenico 2007 STAMPA https://hdl.handle.net/11577/2430232 https://doi.org/10.1016/j.palaeo.2007.02.044 eng eng info:eu-repo/semantics/altIdentifier/wos/WOS:000250898300009 volume:255 firstpage:98 lastpage:131 numberofpages:34 journal:PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY https://hdl.handle.net/11577/2430232 doi:10.1016/j.palaeo.2007.02.044 info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-33947398113 K/T boundary Belluno Basin Southern Alp calcareous nannofossil planktonic foraminifera geochemistry mineralogy info:eu-repo/semantics/article 2007 ftunivpadovairis https://doi.org/10.1016/j.palaeo.2007.02.044 2024-03-21T19:47:04Z An integrated micropalaeontological (planktonic foraminifera and calcareous nannofossils), mineralogical and stable isotope investigation was carried out across the Cretaceous/Tertiary (K/T) boundary in a previously undescribed hemipelagic section (Forada section) cropping out in the Piave River Valley (Southern Alps, Belluno Province, NE Italy). Our results suggest that an apparently complete K/T transition with an expanded basal Danian is preserved in the Forada section. The K/T boundary is marked by a ca. 1.5-cm-thick clay interval intercalated in the pelagic carbonates of the Scaglia Rossa Formation. The boundary clay, characterised by an iridium anomaly, is constituted by a basal 1-2 mm-thick "green layer" and an overlying "red layer". Below the boundary clay, the calcareous nannofossil Micula murus Zone and the planktonic foraminiferal Plummerita hankteninoides Zone, that characterise the terminal Maastrichtian in complete sections, have been identified. Virtually all the calcareous plankton biohorizons normally utilised in the early Danian have been recognised. Interestingly, the ranking of the various biohorizons is the same observed elsewhere if considering the single plankton groups separately, while several inconsistencies emerge if considering the relative succession of the two calcareous plankton groups simultaneously. We caution to infer hiatuses on a section based only on the spacing of the biohorizons of a single group because of the risk of diachroneities in the stressed early Danian environment. By comparing the "distance" of the key biohorizons (i.e. the First Occurrence (FO) of Cruciplacolithus primus and the Last Occurrence (LO) of Parvularugoglobigerina eugubina) from the boundary clay at Forada, and in other complete classical sections, we have inferred that the early Danian is expanded in the Forada section. the section seems ideally suited for studying the recovery pattern of the pelagic ecosystem and calcareous plankton communities in the aftermath of the K/T catastrophe in a pelagic ... Article in Journal/Newspaper Planktonic foraminifera Padua Research Archive (IRIS - Università degli Studi di Padova) Rossa ENVELOPE(-65.233,-65.233,-65.960,-65.960) Palaeogeography, Palaeoclimatology, Palaeoecology 255 1-2 98 131 |
institution |
Open Polar |
collection |
Padua Research Archive (IRIS - Università degli Studi di Padova) |
op_collection_id |
ftunivpadovairis |
language |
English |
topic |
K/T boundary Belluno Basin Southern Alp calcareous nannofossil planktonic foraminifera geochemistry mineralogy |
spellingShingle |
K/T boundary Belluno Basin Southern Alp calcareous nannofossil planktonic foraminifera geochemistry mineralogy FORNACIARI, ELIANA GIUSBERTI, LUCA LUCIANI V TATEO F AGNINI, CLAUDIA BACKMAN J ODDONE M RIO, DOMENICO AN EXPANDED CRETACEOUS-TERTIARY TRANSITION IN A PELAGIC SETTING OF THE SOUTHERN ALPS (CENTRAL-WESTERN TETHYS). |
topic_facet |
K/T boundary Belluno Basin Southern Alp calcareous nannofossil planktonic foraminifera geochemistry mineralogy |
description |
An integrated micropalaeontological (planktonic foraminifera and calcareous nannofossils), mineralogical and stable isotope investigation was carried out across the Cretaceous/Tertiary (K/T) boundary in a previously undescribed hemipelagic section (Forada section) cropping out in the Piave River Valley (Southern Alps, Belluno Province, NE Italy). Our results suggest that an apparently complete K/T transition with an expanded basal Danian is preserved in the Forada section. The K/T boundary is marked by a ca. 1.5-cm-thick clay interval intercalated in the pelagic carbonates of the Scaglia Rossa Formation. The boundary clay, characterised by an iridium anomaly, is constituted by a basal 1-2 mm-thick "green layer" and an overlying "red layer". Below the boundary clay, the calcareous nannofossil Micula murus Zone and the planktonic foraminiferal Plummerita hankteninoides Zone, that characterise the terminal Maastrichtian in complete sections, have been identified. Virtually all the calcareous plankton biohorizons normally utilised in the early Danian have been recognised. Interestingly, the ranking of the various biohorizons is the same observed elsewhere if considering the single plankton groups separately, while several inconsistencies emerge if considering the relative succession of the two calcareous plankton groups simultaneously. We caution to infer hiatuses on a section based only on the spacing of the biohorizons of a single group because of the risk of diachroneities in the stressed early Danian environment. By comparing the "distance" of the key biohorizons (i.e. the First Occurrence (FO) of Cruciplacolithus primus and the Last Occurrence (LO) of Parvularugoglobigerina eugubina) from the boundary clay at Forada, and in other complete classical sections, we have inferred that the early Danian is expanded in the Forada section. the section seems ideally suited for studying the recovery pattern of the pelagic ecosystem and calcareous plankton communities in the aftermath of the K/T catastrophe in a pelagic ... |
author2 |
Fornaciari, Eliana Giusberti, Luca Luciani, V Tateo, F Agnini, Claudia Backman, J Oddone, M Rio, Domenico |
format |
Article in Journal/Newspaper |
author |
FORNACIARI, ELIANA GIUSBERTI, LUCA LUCIANI V TATEO F AGNINI, CLAUDIA BACKMAN J ODDONE M RIO, DOMENICO |
author_facet |
FORNACIARI, ELIANA GIUSBERTI, LUCA LUCIANI V TATEO F AGNINI, CLAUDIA BACKMAN J ODDONE M RIO, DOMENICO |
author_sort |
FORNACIARI, ELIANA |
title |
AN EXPANDED CRETACEOUS-TERTIARY TRANSITION IN A PELAGIC SETTING OF THE SOUTHERN ALPS (CENTRAL-WESTERN TETHYS). |
title_short |
AN EXPANDED CRETACEOUS-TERTIARY TRANSITION IN A PELAGIC SETTING OF THE SOUTHERN ALPS (CENTRAL-WESTERN TETHYS). |
title_full |
AN EXPANDED CRETACEOUS-TERTIARY TRANSITION IN A PELAGIC SETTING OF THE SOUTHERN ALPS (CENTRAL-WESTERN TETHYS). |
title_fullStr |
AN EXPANDED CRETACEOUS-TERTIARY TRANSITION IN A PELAGIC SETTING OF THE SOUTHERN ALPS (CENTRAL-WESTERN TETHYS). |
title_full_unstemmed |
AN EXPANDED CRETACEOUS-TERTIARY TRANSITION IN A PELAGIC SETTING OF THE SOUTHERN ALPS (CENTRAL-WESTERN TETHYS). |
title_sort |
expanded cretaceous-tertiary transition in a pelagic setting of the southern alps (central-western tethys). |
publishDate |
2007 |
url |
https://hdl.handle.net/11577/2430232 https://doi.org/10.1016/j.palaeo.2007.02.044 |
long_lat |
ENVELOPE(-65.233,-65.233,-65.960,-65.960) |
geographic |
Rossa |
geographic_facet |
Rossa |
genre |
Planktonic foraminifera |
genre_facet |
Planktonic foraminifera |
op_relation |
info:eu-repo/semantics/altIdentifier/wos/WOS:000250898300009 volume:255 firstpage:98 lastpage:131 numberofpages:34 journal:PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY https://hdl.handle.net/11577/2430232 doi:10.1016/j.palaeo.2007.02.044 info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-33947398113 |
op_doi |
https://doi.org/10.1016/j.palaeo.2007.02.044 |
container_title |
Palaeogeography, Palaeoclimatology, Palaeoecology |
container_volume |
255 |
container_issue |
1-2 |
container_start_page |
98 |
op_container_end_page |
131 |
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1796318004834729984 |