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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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 |
_version_ |
1766073147376795648 |