Integrated calcareous nannofossil and planktonic foraminiferal bioevents of the last 1.07 Ma: a case study from the East New Zealand Pacific Ocean.
The core MD97-2114 (42°22.32’S; 171°20.42’W) on the northern slope of the submarine Chatham Rise (east of New Zealand, 1935m water depth), is a significant case-study for the improvement of the resolution of the mid-late Pleistocene integrated calcareous nannofossil and planktonic foraminiferal bios...
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ftunivferrarair:oai:sfera.unife.it:11392/527865 2024-09-09T20:04:09+00:00 Integrated calcareous nannofossil and planktonic foraminiferal bioevents of the last 1.07 Ma: a case study from the East New Zealand Pacific Ocean. LUPI C. COBIANCHI M. LUCIANI, Valeria Lupi, C. Luciani, Valeria Cobianchi, M. 2008 STAMPA http://hdl.handle.net/11392/527865 eng eng info:eu-repo/semantics/altIdentifier/wos/WOS:000262992600005 volume:54 issue:5 firstpage:463 lastpage:476 journal:MICROPALEONTOLOGY http://hdl.handle.net/11392/527865 info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-60649090624 usr_valut info:eu-repo/semantics/article 2008 ftunivferrarair 2024-06-19T13:24:23Z The core MD97-2114 (42°22.32’S; 171°20.42’W) on the northern slope of the submarine Chatham Rise (east of New Zealand, 1935m water depth), is a significant case-study for the improvement of the resolution of the mid-late Pleistocene integrated calcareous nannofossil and planktonic foraminiferal biostratigraphy. Quantitative data of calcareous nannofossils and planktonic foraminifera, well preserved and abundant throughout the core, are correlated with magnetostratigraphy and oxygen isotope stratigraphy and indicate that the studied core contains a sedimentary record of the past ca. 1.07 Ma. Several standard nannofossil events were documented and their correlation with Marine Isotope Stages (MIS) is consistent with previous calibrations. Moreover, some subsidiary events are here recorded thus improving the biostratigraphic resolution. The identification of one standard and a number of additional foraminiferal bioevents have been achieved by using climatically/ecologically controlled entries/exits or variations in abundance. The integrated scheme obtained includes 17 bioevents, calibrated with magneto-isotope stratigraphy, and provides a biostratigraphic resolution of ca 63kyr. The bioevents of the two investigated groups of calcareous plankton appear closely spaced in two selected intervals in the lower part of the core, placed at the middle-lower part of the Brunhes Chron and at the top of the Jaramillo Subchron. The implications for the recognition of the chronostratigraphic lower-middle and middle-upper Pleistocene boundaries are discussed. Article in Journal/Newspaper Planktonic foraminifera Università degli Studi di Ferrara: CINECA IRIS Pacific New Zealand |
institution |
Open Polar |
collection |
Università degli Studi di Ferrara: CINECA IRIS |
op_collection_id |
ftunivferrarair |
language |
English |
description |
The core MD97-2114 (42°22.32’S; 171°20.42’W) on the northern slope of the submarine Chatham Rise (east of New Zealand, 1935m water depth), is a significant case-study for the improvement of the resolution of the mid-late Pleistocene integrated calcareous nannofossil and planktonic foraminiferal biostratigraphy. Quantitative data of calcareous nannofossils and planktonic foraminifera, well preserved and abundant throughout the core, are correlated with magnetostratigraphy and oxygen isotope stratigraphy and indicate that the studied core contains a sedimentary record of the past ca. 1.07 Ma. Several standard nannofossil events were documented and their correlation with Marine Isotope Stages (MIS) is consistent with previous calibrations. Moreover, some subsidiary events are here recorded thus improving the biostratigraphic resolution. The identification of one standard and a number of additional foraminiferal bioevents have been achieved by using climatically/ecologically controlled entries/exits or variations in abundance. The integrated scheme obtained includes 17 bioevents, calibrated with magneto-isotope stratigraphy, and provides a biostratigraphic resolution of ca 63kyr. The bioevents of the two investigated groups of calcareous plankton appear closely spaced in two selected intervals in the lower part of the core, placed at the middle-lower part of the Brunhes Chron and at the top of the Jaramillo Subchron. The implications for the recognition of the chronostratigraphic lower-middle and middle-upper Pleistocene boundaries are discussed. |
author2 |
Lupi, C. Luciani, Valeria Cobianchi, M. |
format |
Article in Journal/Newspaper |
author |
LUPI C. COBIANCHI M. LUCIANI, Valeria |
spellingShingle |
LUPI C. COBIANCHI M. LUCIANI, Valeria Integrated calcareous nannofossil and planktonic foraminiferal bioevents of the last 1.07 Ma: a case study from the East New Zealand Pacific Ocean. |
author_facet |
LUPI C. COBIANCHI M. LUCIANI, Valeria |
author_sort |
LUPI C. |
title |
Integrated calcareous nannofossil and planktonic foraminiferal bioevents of the last 1.07 Ma: a case study from the East New Zealand Pacific Ocean. |
title_short |
Integrated calcareous nannofossil and planktonic foraminiferal bioevents of the last 1.07 Ma: a case study from the East New Zealand Pacific Ocean. |
title_full |
Integrated calcareous nannofossil and planktonic foraminiferal bioevents of the last 1.07 Ma: a case study from the East New Zealand Pacific Ocean. |
title_fullStr |
Integrated calcareous nannofossil and planktonic foraminiferal bioevents of the last 1.07 Ma: a case study from the East New Zealand Pacific Ocean. |
title_full_unstemmed |
Integrated calcareous nannofossil and planktonic foraminiferal bioevents of the last 1.07 Ma: a case study from the East New Zealand Pacific Ocean. |
title_sort |
integrated calcareous nannofossil and planktonic foraminiferal bioevents of the last 1.07 ma: a case study from the east new zealand pacific ocean. |
publishDate |
2008 |
url |
http://hdl.handle.net/11392/527865 |
geographic |
Pacific New Zealand |
geographic_facet |
Pacific New Zealand |
genre |
Planktonic foraminifera |
genre_facet |
Planktonic foraminifera |
op_relation |
info:eu-repo/semantics/altIdentifier/wos/WOS:000262992600005 volume:54 issue:5 firstpage:463 lastpage:476 journal:MICROPALEONTOLOGY http://hdl.handle.net/11392/527865 info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-60649090624 usr_valut |
_version_ |
1809936205611008000 |