Distribution of planktonic foraminifers, δ¹⁸O and δ¹³C in Globigerinoides sacculifer as well as Cibicidoides kullenbergi at DSDP Holes 90-590A and 90-590B

High biogenic sedimentation rates in the late Neogene at DSDP Site 590 (1293 m) provide an exceptional opportunity to evaluate late Neogene (late Miocene to latest Pliocene) paleoceanography in waters transitional between temperate and warm-subtropical water masses. Oxygen and carbon isotope analyse...

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Main Authors: Elmstrom, Kristin M, Kennett, James P
Format: Dataset
Language:English
Published: PANGAEA 1986
Subjects:
Online Access:https://doi.pangaea.de/10.1594/PANGAEA.793188
https://doi.org/10.1594/PANGAEA.793188
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record_format openpolar
spelling ftpangaea:oai:pangaea.de:doi:10.1594/PANGAEA.793188 2023-05-15T17:15:00+02:00 Distribution of planktonic foraminifers, δ¹⁸O and δ¹³C in Globigerinoides sacculifer as well as Cibicidoides kullenbergi at DSDP Holes 90-590A and 90-590B Elmstrom, Kristin M Kennett, James P LATITUDE: -31.167000 * LONGITUDE: 163.358500 * DATE/TIME START: 1982-12-15T00:00:00 * DATE/TIME END: 1982-12-15T00:00:00 1986-10-25 application/zip, 2 datasets https://doi.pangaea.de/10.1594/PANGAEA.793188 https://doi.org/10.1594/PANGAEA.793188 en eng PANGAEA https://doi.pangaea.de/10.1594/PANGAEA.793188 https://doi.org/10.1594/PANGAEA.793188 CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess CC-BY Supplement to: Elmstrom, Kristin M; Kennett, James P (1986): Late Neogene paleoceanographic evolution of Site 590: Southwest Pacific. In: Kennett, JP; von der Borch, CC; et al. (eds.), Initial Reports of the Deep Sea Drilling Project, Washington (U.S. Govt. Printing Office), 90, 1361-1381, https://doi.org/10.2973/dsdp.proc.90.141.1986 Deep Sea Drilling Project DSDP Dataset 1986 ftpangaea https://doi.org/10.1594/PANGAEA.793188 https://doi.org/10.2973/dsdp.proc.90.141.1986 2023-01-20T07:32:46Z High biogenic sedimentation rates in the late Neogene at DSDP Site 590 (1293 m) provide an exceptional opportunity to evaluate late Neogene (late Miocene to latest Pliocene) paleoceanography in waters transitional between temperate and warm-subtropical water masses. Oxygen and carbon isotope analyses and quantitative planktonic foraminiferal data have been used to interpret the late Neogene paleoceanographic evolution of this site. Faunal and isotopic data from Site 590 show a progression of paleoceanographic events between 6.7 and 4.3 Ma, during the latest Miocene and early Pliocene. First, a permanent depletion in both planktonic and benthic foraminiferal d13C, between 6.7 and 6.2 Ma, can be correlated to the globally recognized late Miocene carbon isotope shift. Second, a 0.5 per mil enrichment in benthic foraminiferal d18O between 5.6 and 4.7 Ma in the latest Miocene to early Pliocene corresponds to the latest Miocene oxygen isotopic enrichment at Site 284, located in temperate waters south of Site 590. This enrichment in d18O coincides with a time of cool surface waters, as is suggested by high frequencies of Neogloboquadrina pachyderma and low frequencies of the warmer-water planktonic foraminifers, as well as by an enrichment in planktonic foraminiferal d18O relative to the earlier Miocene. By 4.6 Ma, benthic foraminiferal d18O values become depleted and remain fairly stable until about 3.8 Ma. The early Pliocene (~4.3 to 3.2 Ma) is marked by a significant increase in biogenic sedimentation rates (37.7 to 83.3 m/m.y.). During this time, heaviest values in planktonic foraminiferal d18O are associated with a decrease in the gradient between surface and intermediate-water d13C and d18O, a 1.0 per mil depletion in the d13C of two species of planktonic foraminifers, and a mixture of warm and cool planktonic foraminiferal elements. These data suggest that localized upwelling at the Subtropical Divergence produced an increase in surface-water productivity during the early Pliocene. A two-step enrichment in ... Dataset Neogloboquadrina pachyderma PANGAEA - Data Publisher for Earth & Environmental Science ENVELOPE(163.358500,163.358500,-31.167000,-31.167000)
institution Open Polar
collection PANGAEA - Data Publisher for Earth & Environmental Science
op_collection_id ftpangaea
language English
topic Deep Sea Drilling Project
DSDP
spellingShingle Deep Sea Drilling Project
DSDP
Elmstrom, Kristin M
Kennett, James P
Distribution of planktonic foraminifers, δ¹⁸O and δ¹³C in Globigerinoides sacculifer as well as Cibicidoides kullenbergi at DSDP Holes 90-590A and 90-590B
topic_facet Deep Sea Drilling Project
DSDP
description High biogenic sedimentation rates in the late Neogene at DSDP Site 590 (1293 m) provide an exceptional opportunity to evaluate late Neogene (late Miocene to latest Pliocene) paleoceanography in waters transitional between temperate and warm-subtropical water masses. Oxygen and carbon isotope analyses and quantitative planktonic foraminiferal data have been used to interpret the late Neogene paleoceanographic evolution of this site. Faunal and isotopic data from Site 590 show a progression of paleoceanographic events between 6.7 and 4.3 Ma, during the latest Miocene and early Pliocene. First, a permanent depletion in both planktonic and benthic foraminiferal d13C, between 6.7 and 6.2 Ma, can be correlated to the globally recognized late Miocene carbon isotope shift. Second, a 0.5 per mil enrichment in benthic foraminiferal d18O between 5.6 and 4.7 Ma in the latest Miocene to early Pliocene corresponds to the latest Miocene oxygen isotopic enrichment at Site 284, located in temperate waters south of Site 590. This enrichment in d18O coincides with a time of cool surface waters, as is suggested by high frequencies of Neogloboquadrina pachyderma and low frequencies of the warmer-water planktonic foraminifers, as well as by an enrichment in planktonic foraminiferal d18O relative to the earlier Miocene. By 4.6 Ma, benthic foraminiferal d18O values become depleted and remain fairly stable until about 3.8 Ma. The early Pliocene (~4.3 to 3.2 Ma) is marked by a significant increase in biogenic sedimentation rates (37.7 to 83.3 m/m.y.). During this time, heaviest values in planktonic foraminiferal d18O are associated with a decrease in the gradient between surface and intermediate-water d13C and d18O, a 1.0 per mil depletion in the d13C of two species of planktonic foraminifers, and a mixture of warm and cool planktonic foraminiferal elements. These data suggest that localized upwelling at the Subtropical Divergence produced an increase in surface-water productivity during the early Pliocene. A two-step enrichment in ...
format Dataset
author Elmstrom, Kristin M
Kennett, James P
author_facet Elmstrom, Kristin M
Kennett, James P
author_sort Elmstrom, Kristin M
title Distribution of planktonic foraminifers, δ¹⁸O and δ¹³C in Globigerinoides sacculifer as well as Cibicidoides kullenbergi at DSDP Holes 90-590A and 90-590B
title_short Distribution of planktonic foraminifers, δ¹⁸O and δ¹³C in Globigerinoides sacculifer as well as Cibicidoides kullenbergi at DSDP Holes 90-590A and 90-590B
title_full Distribution of planktonic foraminifers, δ¹⁸O and δ¹³C in Globigerinoides sacculifer as well as Cibicidoides kullenbergi at DSDP Holes 90-590A and 90-590B
title_fullStr Distribution of planktonic foraminifers, δ¹⁸O and δ¹³C in Globigerinoides sacculifer as well as Cibicidoides kullenbergi at DSDP Holes 90-590A and 90-590B
title_full_unstemmed Distribution of planktonic foraminifers, δ¹⁸O and δ¹³C in Globigerinoides sacculifer as well as Cibicidoides kullenbergi at DSDP Holes 90-590A and 90-590B
title_sort distribution of planktonic foraminifers, δ¹⁸o and δ¹³c in globigerinoides sacculifer as well as cibicidoides kullenbergi at dsdp holes 90-590a and 90-590b
publisher PANGAEA
publishDate 1986
url https://doi.pangaea.de/10.1594/PANGAEA.793188
https://doi.org/10.1594/PANGAEA.793188
op_coverage LATITUDE: -31.167000 * LONGITUDE: 163.358500 * DATE/TIME START: 1982-12-15T00:00:00 * DATE/TIME END: 1982-12-15T00:00:00
long_lat ENVELOPE(163.358500,163.358500,-31.167000,-31.167000)
genre Neogloboquadrina pachyderma
genre_facet Neogloboquadrina pachyderma
op_source Supplement to: Elmstrom, Kristin M; Kennett, James P (1986): Late Neogene paleoceanographic evolution of Site 590: Southwest Pacific. In: Kennett, JP; von der Borch, CC; et al. (eds.), Initial Reports of the Deep Sea Drilling Project, Washington (U.S. Govt. Printing Office), 90, 1361-1381, https://doi.org/10.2973/dsdp.proc.90.141.1986
op_relation https://doi.pangaea.de/10.1594/PANGAEA.793188
https://doi.org/10.1594/PANGAEA.793188
op_rights CC-BY-3.0: Creative Commons Attribution 3.0 Unported
Access constraints: unrestricted
info:eu-repo/semantics/openAccess
op_rightsnorm CC-BY
op_doi https://doi.org/10.1594/PANGAEA.793188
https://doi.org/10.2973/dsdp.proc.90.141.1986
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