Late Pliocene stable oxygen isotope record of the Mediterranean Sea
Detailed pollen analyses and oxygen isotope records of three foraminiferal species, Globigerina bulloides, Uvigerina peregrina and Cibicides pachyderma, from the Semaforo and Vrica composite sections (Crotone, southern Italy) have been compared to the global climatic changes depicted by late Pliocen...
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1991
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ftpangaea:oai:pangaea.de:doi:10.1594/PANGAEA.743035 2024-09-15T18:19:32+00:00 Late Pliocene stable oxygen isotope record of the Mediterranean Sea Combourieu-Nebout, Nathalie Vergnaud-Grazzini, Colette MEDIAN LATITUDE: 39.476967 * MEDIAN LONGITUDE: 15.227733 * SOUTH-BOUND LATITUDE: 39.083300 * WEST-BOUND LONGITUDE: 11.449800 * NORTH-BOUND LATITUDE: 40.264300 * EAST-BOUND LONGITUDE: 17.116700 * DATE/TIME START: 1986-01-29T01:58:00 * DATE/TIME END: 1986-01-31T15:38:00 1991 application/zip, 3 datasets https://doi.pangaea.de/10.1594/PANGAEA.743035 https://doi.org/10.1594/PANGAEA.743035 en eng PANGAEA https://doi.pangaea.de/10.1594/PANGAEA.743035 https://doi.org/10.1594/PANGAEA.743035 CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess Supplement to: Combourieu-Nebout, Nathalie; Vergnaud-Grazzini, Colette (1991): Late Pliocene northern hemisphere glaciations: the continental and marine responses in the central Mediterranean. Quaternary Science Reviews, 10(4), 319-334, https://doi.org/10.1016/0277-3791(91)90034-R 107-653A Crotone DRILL Drilling/drill rig HAND Joides Resolution Leg107 Ocean Drilling Program ODP Sampling by hand Tirreno Sea dataset publication series 1991 ftpangaea https://doi.org/10.1594/PANGAEA.74303510.1016/0277-3791(91)90034-R 2024-07-24T02:31:20Z Detailed pollen analyses and oxygen isotope records of three foraminiferal species, Globigerina bulloides, Uvigerina peregrina and Cibicides pachyderma, from the Semaforo and Vrica composite sections (Crotone, southern Italy) have been compared to the global climatic changes depicted by late Pliocene-early Pleistocene foraminiferal d18O records of Site 607 in the North Atlantic, and Hole 653A in the Tyrrhenian basin, West Mediterranean. Major overturns in the mid-altitude vegetation are shown near isotopic stages 82, 60, 58 and 50, at about 2.03 Ma, 1.6 Ma and 1.37 Ma according to the Raymo et al. (1989, doi:10.1029/PA004i004p00413) and Ruddiman et al. (1989, doi:10.1029/PA004i004p00353) timescales. At the same dates, glacial 18O maxima either became higher or display step increases in the western Mediterranean or in the open ocean as well. This suggests that size increases of Northern Hemisphere ice sheets were the driving factor for regional or local marine and continental environmental changes within the Mediterranean basin. Near isotopic stages 62-60, close to the conventional Plio-Pleistocene boundary, the climatic conditions severed enough within the Mediterranean basin to modify the continental environment, as depicted by a sudden increase of Artemisia percentages, while the first significant southward migration of the North Polar Front may have been recorded by an influx of left coiling Neogloboquadrina pachyderma in the central Mediterranean. It also appears that 'Boreal Guests' entered the Mediterranean during phases of 18O enrichment of foraminiferal calcite. There does not seem to be any discrepancy between the climatic concept of the Pliocene-Pleistocene boundary and its chronostratigraphic definition. Other/Unknown Material Neogloboquadrina pachyderma North Atlantic PANGAEA - Data Publisher for Earth & Environmental Science ENVELOPE(11.449800,17.116700,40.264300,39.083300) |
institution |
Open Polar |
collection |
PANGAEA - Data Publisher for Earth & Environmental Science |
op_collection_id |
ftpangaea |
language |
English |
topic |
107-653A Crotone DRILL Drilling/drill rig HAND Joides Resolution Leg107 Ocean Drilling Program ODP Sampling by hand Tirreno Sea |
spellingShingle |
107-653A Crotone DRILL Drilling/drill rig HAND Joides Resolution Leg107 Ocean Drilling Program ODP Sampling by hand Tirreno Sea Combourieu-Nebout, Nathalie Vergnaud-Grazzini, Colette Late Pliocene stable oxygen isotope record of the Mediterranean Sea |
topic_facet |
107-653A Crotone DRILL Drilling/drill rig HAND Joides Resolution Leg107 Ocean Drilling Program ODP Sampling by hand Tirreno Sea |
description |
Detailed pollen analyses and oxygen isotope records of three foraminiferal species, Globigerina bulloides, Uvigerina peregrina and Cibicides pachyderma, from the Semaforo and Vrica composite sections (Crotone, southern Italy) have been compared to the global climatic changes depicted by late Pliocene-early Pleistocene foraminiferal d18O records of Site 607 in the North Atlantic, and Hole 653A in the Tyrrhenian basin, West Mediterranean. Major overturns in the mid-altitude vegetation are shown near isotopic stages 82, 60, 58 and 50, at about 2.03 Ma, 1.6 Ma and 1.37 Ma according to the Raymo et al. (1989, doi:10.1029/PA004i004p00413) and Ruddiman et al. (1989, doi:10.1029/PA004i004p00353) timescales. At the same dates, glacial 18O maxima either became higher or display step increases in the western Mediterranean or in the open ocean as well. This suggests that size increases of Northern Hemisphere ice sheets were the driving factor for regional or local marine and continental environmental changes within the Mediterranean basin. Near isotopic stages 62-60, close to the conventional Plio-Pleistocene boundary, the climatic conditions severed enough within the Mediterranean basin to modify the continental environment, as depicted by a sudden increase of Artemisia percentages, while the first significant southward migration of the North Polar Front may have been recorded by an influx of left coiling Neogloboquadrina pachyderma in the central Mediterranean. It also appears that 'Boreal Guests' entered the Mediterranean during phases of 18O enrichment of foraminiferal calcite. There does not seem to be any discrepancy between the climatic concept of the Pliocene-Pleistocene boundary and its chronostratigraphic definition. |
format |
Other/Unknown Material |
author |
Combourieu-Nebout, Nathalie Vergnaud-Grazzini, Colette |
author_facet |
Combourieu-Nebout, Nathalie Vergnaud-Grazzini, Colette |
author_sort |
Combourieu-Nebout, Nathalie |
title |
Late Pliocene stable oxygen isotope record of the Mediterranean Sea |
title_short |
Late Pliocene stable oxygen isotope record of the Mediterranean Sea |
title_full |
Late Pliocene stable oxygen isotope record of the Mediterranean Sea |
title_fullStr |
Late Pliocene stable oxygen isotope record of the Mediterranean Sea |
title_full_unstemmed |
Late Pliocene stable oxygen isotope record of the Mediterranean Sea |
title_sort |
late pliocene stable oxygen isotope record of the mediterranean sea |
publisher |
PANGAEA |
publishDate |
1991 |
url |
https://doi.pangaea.de/10.1594/PANGAEA.743035 https://doi.org/10.1594/PANGAEA.743035 |
op_coverage |
MEDIAN LATITUDE: 39.476967 * MEDIAN LONGITUDE: 15.227733 * SOUTH-BOUND LATITUDE: 39.083300 * WEST-BOUND LONGITUDE: 11.449800 * NORTH-BOUND LATITUDE: 40.264300 * EAST-BOUND LONGITUDE: 17.116700 * DATE/TIME START: 1986-01-29T01:58:00 * DATE/TIME END: 1986-01-31T15:38:00 |
long_lat |
ENVELOPE(11.449800,17.116700,40.264300,39.083300) |
genre |
Neogloboquadrina pachyderma North Atlantic |
genre_facet |
Neogloboquadrina pachyderma North Atlantic |
op_source |
Supplement to: Combourieu-Nebout, Nathalie; Vergnaud-Grazzini, Colette (1991): Late Pliocene northern hemisphere glaciations: the continental and marine responses in the central Mediterranean. Quaternary Science Reviews, 10(4), 319-334, https://doi.org/10.1016/0277-3791(91)90034-R |
op_relation |
https://doi.pangaea.de/10.1594/PANGAEA.743035 https://doi.org/10.1594/PANGAEA.743035 |
op_rights |
CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1594/PANGAEA.74303510.1016/0277-3791(91)90034-R |
_version_ |
1810457884571467776 |