Organic matter C and N composition and N. pachyderma stable isotope ratios of ODP Hole 188-1166A sediments
We report the results of downhole stable isotopic (d13Corg [organic carbon] and d15N) and elemental measurements (total organic carbon [TOC], total nitrogen [TN], and carbon/nitrogen [C/N]) of sedimentary organic matter (SOM) along with stable isotopic measurements (d18O and d13C) of left-coiling Ne...
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ftpangaea:oai:pangaea.de:doi:10.1594/PANGAEA.780637 2023-05-15T17:14:59+02:00 Organic matter C and N composition and N. pachyderma stable isotope ratios of ODP Hole 188-1166A sediments Theissen, Kevin M Dunbar, Robert B Cooper, Alan K LATITUDE: -67.696160 * LONGITUDE: 74.786930 * DATE/TIME START: 2000-02-16T01:30:00 * DATE/TIME END: 2000-02-21T16:00:00 2003-05-08 application/zip, 2 datasets https://doi.pangaea.de/10.1594/PANGAEA.780637 https://doi.org/10.1594/PANGAEA.780637 en eng PANGAEA https://doi.pangaea.de/10.1594/PANGAEA.780637 https://doi.org/10.1594/PANGAEA.780637 CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess CC-BY Supplement to: Theissen, Kevin M; Dunbar, Robert B; Cooper, Alan K (2003): Data report: Stable isotopic measurements of sedimentary organic matter and N. pachyderma (s.) from Site 1166, Prydz Bay continental shelf. In: Cooper, AK; O'Brien, PE; Richter, C (eds.) Proceedings of the Ocean Drilling Program, Scientific Results, College Station, TX (Ocean Drilling Program), 188, 1-11, https://doi.org/10.2973/odp.proc.sr.188.005.2003 188-1166A DRILL Drilling/drill rig Joides Resolution Leg188 Ocean Drilling Program ODP Prydz Bay Dataset 2003 ftpangaea https://doi.org/10.1594/PANGAEA.780637 https://doi.org/10.2973/odp.proc.sr.188.005.2003 2023-01-20T07:32:32Z We report the results of downhole stable isotopic (d13Corg [organic carbon] and d15N) and elemental measurements (total organic carbon [TOC], total nitrogen [TN], and carbon/nitrogen [C/N]) of sedimentary organic matter (SOM) along with stable isotopic measurements (d18O and d13C) of left-coiling Neogloboquadrina pachyderma planktonic foraminifers from Ocean Drilling Program Site 1166. TOC and TN measurements indicate a large change from organic-rich preglacial sediments with primary organic matter to organic-poor early glacial and glacial sediments, with mainly recycled organic matter. Results of the stable isotopic measurements of SOM show a range of values that are typical of both marine and terrestrial organic matter, probably reflecting a mixture of the two. However, C/N values are mostly high (>15), suggesting greater input and/or preservation of terrestrial organic matter. Foraminifers are only present in glacial/glaciomarine sediments of latest Pliocene to Pleistocene age at Site 1166 (lithostratigraphic Unit I). The majority of this unit has d13Corg and TOC values that are similar to those of glacial sediments recovered at Site 1167 (lithostratigraphic Unit II) on the slope and may have the same source(s). Although the low resolution of the N. pachyderma (s.) d18O and d13C data set precludes any specific paleoclimatic interpretation, downcore variations in foraminifer d18O and d13C values of 0.5 per mil to 1 per mil amplitude may indicate glacial-interglacial changes in ice volume/temperature in the Prydz Bay region. Dataset Neogloboquadrina pachyderma Prydz Bay PANGAEA - Data Publisher for Earth & Environmental Science Prydz Bay ENVELOPE(74.786930,74.786930,-67.696160,-67.696160) |
institution |
Open Polar |
collection |
PANGAEA - Data Publisher for Earth & Environmental Science |
op_collection_id |
ftpangaea |
language |
English |
topic |
188-1166A DRILL Drilling/drill rig Joides Resolution Leg188 Ocean Drilling Program ODP Prydz Bay |
spellingShingle |
188-1166A DRILL Drilling/drill rig Joides Resolution Leg188 Ocean Drilling Program ODP Prydz Bay Theissen, Kevin M Dunbar, Robert B Cooper, Alan K Organic matter C and N composition and N. pachyderma stable isotope ratios of ODP Hole 188-1166A sediments |
topic_facet |
188-1166A DRILL Drilling/drill rig Joides Resolution Leg188 Ocean Drilling Program ODP Prydz Bay |
description |
We report the results of downhole stable isotopic (d13Corg [organic carbon] and d15N) and elemental measurements (total organic carbon [TOC], total nitrogen [TN], and carbon/nitrogen [C/N]) of sedimentary organic matter (SOM) along with stable isotopic measurements (d18O and d13C) of left-coiling Neogloboquadrina pachyderma planktonic foraminifers from Ocean Drilling Program Site 1166. TOC and TN measurements indicate a large change from organic-rich preglacial sediments with primary organic matter to organic-poor early glacial and glacial sediments, with mainly recycled organic matter. Results of the stable isotopic measurements of SOM show a range of values that are typical of both marine and terrestrial organic matter, probably reflecting a mixture of the two. However, C/N values are mostly high (>15), suggesting greater input and/or preservation of terrestrial organic matter. Foraminifers are only present in glacial/glaciomarine sediments of latest Pliocene to Pleistocene age at Site 1166 (lithostratigraphic Unit I). The majority of this unit has d13Corg and TOC values that are similar to those of glacial sediments recovered at Site 1167 (lithostratigraphic Unit II) on the slope and may have the same source(s). Although the low resolution of the N. pachyderma (s.) d18O and d13C data set precludes any specific paleoclimatic interpretation, downcore variations in foraminifer d18O and d13C values of 0.5 per mil to 1 per mil amplitude may indicate glacial-interglacial changes in ice volume/temperature in the Prydz Bay region. |
format |
Dataset |
author |
Theissen, Kevin M Dunbar, Robert B Cooper, Alan K |
author_facet |
Theissen, Kevin M Dunbar, Robert B Cooper, Alan K |
author_sort |
Theissen, Kevin M |
title |
Organic matter C and N composition and N. pachyderma stable isotope ratios of ODP Hole 188-1166A sediments |
title_short |
Organic matter C and N composition and N. pachyderma stable isotope ratios of ODP Hole 188-1166A sediments |
title_full |
Organic matter C and N composition and N. pachyderma stable isotope ratios of ODP Hole 188-1166A sediments |
title_fullStr |
Organic matter C and N composition and N. pachyderma stable isotope ratios of ODP Hole 188-1166A sediments |
title_full_unstemmed |
Organic matter C and N composition and N. pachyderma stable isotope ratios of ODP Hole 188-1166A sediments |
title_sort |
organic matter c and n composition and n. pachyderma stable isotope ratios of odp hole 188-1166a sediments |
publisher |
PANGAEA |
publishDate |
2003 |
url |
https://doi.pangaea.de/10.1594/PANGAEA.780637 https://doi.org/10.1594/PANGAEA.780637 |
op_coverage |
LATITUDE: -67.696160 * LONGITUDE: 74.786930 * DATE/TIME START: 2000-02-16T01:30:00 * DATE/TIME END: 2000-02-21T16:00:00 |
long_lat |
ENVELOPE(74.786930,74.786930,-67.696160,-67.696160) |
geographic |
Prydz Bay |
geographic_facet |
Prydz Bay |
genre |
Neogloboquadrina pachyderma Prydz Bay |
genre_facet |
Neogloboquadrina pachyderma Prydz Bay |
op_source |
Supplement to: Theissen, Kevin M; Dunbar, Robert B; Cooper, Alan K (2003): Data report: Stable isotopic measurements of sedimentary organic matter and N. pachyderma (s.) from Site 1166, Prydz Bay continental shelf. In: Cooper, AK; O'Brien, PE; Richter, C (eds.) Proceedings of the Ocean Drilling Program, Scientific Results, College Station, TX (Ocean Drilling Program), 188, 1-11, https://doi.org/10.2973/odp.proc.sr.188.005.2003 |
op_relation |
https://doi.pangaea.de/10.1594/PANGAEA.780637 https://doi.org/10.1594/PANGAEA.780637 |
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.780637 https://doi.org/10.2973/odp.proc.sr.188.005.2003 |
_version_ |
1766073114859405312 |