Organic chemistry of Neogene sediments from ODP Leg 113, supplement to: Macko, Stephen A; Pereira, Christopher PG (1990): Neogene paleoclimate development of the Antarctic Weddell Sea region: organic geochemistry. In: Barker, PF; Kennett, JP; et al. (eds.), Proceedings of the Ocean Drilling Program, Scientific Results, College Station, TX (Ocean Drilling Program), 113, 881-897
Stable carbon and nitrogen isotopic compositions as well as organic carbon and total nitrogen contents of cored material are reported for the Weddell Sea, Ocean Drilling Program (ODP) Sites 689 and 690 (Maud Rise), Site 693 (continental margin), and Site 694 (abyssal plain). Results from both high r...
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ftdatacite:10.1594/pangaea.726518 2023-05-15T13:46:22+02:00 Organic chemistry of Neogene sediments from ODP Leg 113, supplement to: Macko, Stephen A; Pereira, Christopher PG (1990): Neogene paleoclimate development of the Antarctic Weddell Sea region: organic geochemistry. In: Barker, PF; Kennett, JP; et al. (eds.), Proceedings of the Ocean Drilling Program, Scientific Results, College Station, TX (Ocean Drilling Program), 113, 881-897 Macko, Stephen A Pereira, Christopher PG 1990 application/zip https://dx.doi.org/10.1594/pangaea.726518 https://doi.pangaea.de/10.1594/PANGAEA.726518 en eng PANGAEA - Data Publisher for Earth & Environmental Science https://dx.doi.org/10.2973/odp.proc.sr.113.190.1990 Creative Commons Attribution 3.0 Unported https://creativecommons.org/licenses/by/3.0/legalcode cc-by-3.0 CC-BY Drilling/drill rig Leg113 Joides Resolution Ocean Drilling Program ODP Supplementary Collection of Datasets Collection article 1990 ftdatacite https://doi.org/10.1594/pangaea.726518 https://doi.org/10.2973/odp.proc.sr.113.190.1990 2022-02-08T16:02:21Z Stable carbon and nitrogen isotopic compositions as well as organic carbon and total nitrogen contents of cored material are reported for the Weddell Sea, Ocean Drilling Program (ODP) Sites 689 and 690 (Maud Rise), Site 693 (continental margin), and Site 694 (abyssal plain). Results from both high resolution sampling (up to six samples per section) and low resolution (one sample per section) are documented. In general, these results indicate large changes in the types and amounts of carbon and nitrogen preserved in the sediments of the Weddell Sea region during the past 25 m.y., with an especially important and dramatic event coinciding with the western Antarctic ice-sheet becoming a semi-permanent or permanent feature about 5 Ma.The overall results may be correlated with the onset of major ice-sheets on West Antarctica, stabilization of the icesheet in the Pliocene and the intensified recycling of organic carbon and total nitrogen, which is possibly the result of increased ice cover. Evidence is also presented for either low production of organic carbon or the presence of a water column, in the eastern Weddell Sea during the early and middle Neogene, which was highly corrosive to organic matter. This condition, together with slow sediment accumulation rates, inhibited the preservation of carbon in the sediments. Article in Journal/Newspaper Antarc* Antarctic Antarctica Ice Sheet Weddell Sea West Antarctica DataCite Metadata Store (German National Library of Science and Technology) Antarctic The Antarctic Weddell Sea West Antarctica Weddell Maud Rise ENVELOPE(3.000,3.000,-66.000,-66.000) Kennett ENVELOPE(-65.167,-65.167,-67.117,-67.117) |
institution |
Open Polar |
collection |
DataCite Metadata Store (German National Library of Science and Technology) |
op_collection_id |
ftdatacite |
language |
English |
topic |
Drilling/drill rig Leg113 Joides Resolution Ocean Drilling Program ODP |
spellingShingle |
Drilling/drill rig Leg113 Joides Resolution Ocean Drilling Program ODP Macko, Stephen A Pereira, Christopher PG Organic chemistry of Neogene sediments from ODP Leg 113, supplement to: Macko, Stephen A; Pereira, Christopher PG (1990): Neogene paleoclimate development of the Antarctic Weddell Sea region: organic geochemistry. In: Barker, PF; Kennett, JP; et al. (eds.), Proceedings of the Ocean Drilling Program, Scientific Results, College Station, TX (Ocean Drilling Program), 113, 881-897 |
topic_facet |
Drilling/drill rig Leg113 Joides Resolution Ocean Drilling Program ODP |
description |
Stable carbon and nitrogen isotopic compositions as well as organic carbon and total nitrogen contents of cored material are reported for the Weddell Sea, Ocean Drilling Program (ODP) Sites 689 and 690 (Maud Rise), Site 693 (continental margin), and Site 694 (abyssal plain). Results from both high resolution sampling (up to six samples per section) and low resolution (one sample per section) are documented. In general, these results indicate large changes in the types and amounts of carbon and nitrogen preserved in the sediments of the Weddell Sea region during the past 25 m.y., with an especially important and dramatic event coinciding with the western Antarctic ice-sheet becoming a semi-permanent or permanent feature about 5 Ma.The overall results may be correlated with the onset of major ice-sheets on West Antarctica, stabilization of the icesheet in the Pliocene and the intensified recycling of organic carbon and total nitrogen, which is possibly the result of increased ice cover. Evidence is also presented for either low production of organic carbon or the presence of a water column, in the eastern Weddell Sea during the early and middle Neogene, which was highly corrosive to organic matter. This condition, together with slow sediment accumulation rates, inhibited the preservation of carbon in the sediments. |
format |
Article in Journal/Newspaper |
author |
Macko, Stephen A Pereira, Christopher PG |
author_facet |
Macko, Stephen A Pereira, Christopher PG |
author_sort |
Macko, Stephen A |
title |
Organic chemistry of Neogene sediments from ODP Leg 113, supplement to: Macko, Stephen A; Pereira, Christopher PG (1990): Neogene paleoclimate development of the Antarctic Weddell Sea region: organic geochemistry. In: Barker, PF; Kennett, JP; et al. (eds.), Proceedings of the Ocean Drilling Program, Scientific Results, College Station, TX (Ocean Drilling Program), 113, 881-897 |
title_short |
Organic chemistry of Neogene sediments from ODP Leg 113, supplement to: Macko, Stephen A; Pereira, Christopher PG (1990): Neogene paleoclimate development of the Antarctic Weddell Sea region: organic geochemistry. In: Barker, PF; Kennett, JP; et al. (eds.), Proceedings of the Ocean Drilling Program, Scientific Results, College Station, TX (Ocean Drilling Program), 113, 881-897 |
title_full |
Organic chemistry of Neogene sediments from ODP Leg 113, supplement to: Macko, Stephen A; Pereira, Christopher PG (1990): Neogene paleoclimate development of the Antarctic Weddell Sea region: organic geochemistry. In: Barker, PF; Kennett, JP; et al. (eds.), Proceedings of the Ocean Drilling Program, Scientific Results, College Station, TX (Ocean Drilling Program), 113, 881-897 |
title_fullStr |
Organic chemistry of Neogene sediments from ODP Leg 113, supplement to: Macko, Stephen A; Pereira, Christopher PG (1990): Neogene paleoclimate development of the Antarctic Weddell Sea region: organic geochemistry. In: Barker, PF; Kennett, JP; et al. (eds.), Proceedings of the Ocean Drilling Program, Scientific Results, College Station, TX (Ocean Drilling Program), 113, 881-897 |
title_full_unstemmed |
Organic chemistry of Neogene sediments from ODP Leg 113, supplement to: Macko, Stephen A; Pereira, Christopher PG (1990): Neogene paleoclimate development of the Antarctic Weddell Sea region: organic geochemistry. In: Barker, PF; Kennett, JP; et al. (eds.), Proceedings of the Ocean Drilling Program, Scientific Results, College Station, TX (Ocean Drilling Program), 113, 881-897 |
title_sort |
organic chemistry of neogene sediments from odp leg 113, supplement to: macko, stephen a; pereira, christopher pg (1990): neogene paleoclimate development of the antarctic weddell sea region: organic geochemistry. in: barker, pf; kennett, jp; et al. (eds.), proceedings of the ocean drilling program, scientific results, college station, tx (ocean drilling program), 113, 881-897 |
publisher |
PANGAEA - Data Publisher for Earth & Environmental Science |
publishDate |
1990 |
url |
https://dx.doi.org/10.1594/pangaea.726518 https://doi.pangaea.de/10.1594/PANGAEA.726518 |
long_lat |
ENVELOPE(3.000,3.000,-66.000,-66.000) ENVELOPE(-65.167,-65.167,-67.117,-67.117) |
geographic |
Antarctic The Antarctic Weddell Sea West Antarctica Weddell Maud Rise Kennett |
geographic_facet |
Antarctic The Antarctic Weddell Sea West Antarctica Weddell Maud Rise Kennett |
genre |
Antarc* Antarctic Antarctica Ice Sheet Weddell Sea West Antarctica |
genre_facet |
Antarc* Antarctic Antarctica Ice Sheet Weddell Sea West Antarctica |
op_relation |
https://dx.doi.org/10.2973/odp.proc.sr.113.190.1990 |
op_rights |
Creative Commons Attribution 3.0 Unported https://creativecommons.org/licenses/by/3.0/legalcode cc-by-3.0 |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1594/pangaea.726518 https://doi.org/10.2973/odp.proc.sr.113.190.1990 |
_version_ |
1766240984728862720 |