(Table T2) Stable iron isotope ratios and amount of iron extracted by different methods from ODP Site 207-1260 sediments
Fe isotope measurements are presented for 10 samples from the Cenomanian-Turonian black shale unit in Hole 1260B at Demerara Rise. The samples bracket the latest Cenomanian ocean anoxic event and were selected to ascertain whether Fe isotopes can be used to gain a better understanding of oceanic red...
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ftpangaea:oai:pangaea.de:doi:10.1594/PANGAEA.776004 2023-05-15T17:35:30+02:00 (Table T2) Stable iron isotope ratios and amount of iron extracted by different methods from ODP Site 207-1260 sediments Clayton, Robin E Nederbragt, Alexandra J Malinovsky, Dmitry Andersson, Per S Thurow, Juergen W LATITUDE: 9.265667 * LONGITUDE: -54.544033 * DATE/TIME START: 2003-02-07T00:00:00 * DATE/TIME END: 2003-02-12T00:00:00 * MINIMUM DEPTH, sediment/rock: 407.75 m * MAXIMUM DEPTH, sediment/rock: 455.87 m 2006-02-15 text/tab-separated-values, 84 data points https://doi.pangaea.de/10.1594/PANGAEA.776004 https://doi.org/10.1594/PANGAEA.776004 en eng PANGAEA https://doi.pangaea.de/10.1594/PANGAEA.776004 https://doi.org/10.1594/PANGAEA.776004 CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess CC-BY Supplement to: Clayton, Robin E; Nederbragt, Alexandra J; Malinovsky, Dmitry; Andersson, Per S; Thurow, Juergen W (2007): Data report: iron isotope geochemistry of mid-Cretaceous organic-rich sediments at Demerara Rise (ODP Leg 207). In: Mosher, DC; Erbacher, J; Malone, MJ (eds.) Proceedings of the Ocean Drilling Program, Scientific Results, College Station, TX (Ocean Drilling Program), 207, 1-14, https://doi.org/10.2973/odp.proc.sr.207.109.2007 207-1260 COMPCORE Composite Core DEPTH sediment/rock DSDP/ODP/IODP sample designation Iron Joides Resolution Leg207 MC-ICP-MS Thermo-Finnigan Neptune North Atlantic Ocean Ocean Drilling Program ODP Percentage Sample code/label Weighted δ56Fe standard deviation Dataset 2006 ftpangaea https://doi.org/10.1594/PANGAEA.776004 https://doi.org/10.2973/odp.proc.sr.207.109.2007 2023-01-20T08:53:20Z Fe isotope measurements are presented for 10 samples from the Cenomanian-Turonian black shale unit in Hole 1260B at Demerara Rise. The samples bracket the latest Cenomanian ocean anoxic event and were selected to ascertain whether Fe isotopes can be used to gain a better understanding of oceanic redox conditions during the mid-Cretaceous. Three extraction procedures were used to provide Fe extracts that represent the Fe oxide (average FeCBD = 0.07 wt%, N = 8), Fe oxide-sulfide-carbonate (average FeAR = 0.34 wt%, N = 10), and total Fe fractions (average FeHF = 0.81 wt%, N = 10). Fe isotope measurements were conducted on all FeAR extracts as a priority as these were considered to best reflect changes in the redox environment. d56Fe values range between 0.02 per mil ± 0.09 per mil and -0.77 per mil ± 0.05 per mil and appear to correlate negatively with the C/N ratio and oxygen index of total organic carbon. Isotopic measurements of two Fe oxide (FeCBD) extracts show a much heavier isotopic composition (d56Fe = 0.74 per mil ± 0.08 per mil and 0.63 per mil ± 0.04 per mil), which suggests isotopic partitioning between different mineral components in the sediment. Dataset North Atlantic PANGAEA - Data Publisher for Earth & Environmental Science ENVELOPE(-54.544033,-54.544033,9.265667,9.265667) |
institution |
Open Polar |
collection |
PANGAEA - Data Publisher for Earth & Environmental Science |
op_collection_id |
ftpangaea |
language |
English |
topic |
207-1260 COMPCORE Composite Core DEPTH sediment/rock DSDP/ODP/IODP sample designation Iron Joides Resolution Leg207 MC-ICP-MS Thermo-Finnigan Neptune North Atlantic Ocean Ocean Drilling Program ODP Percentage Sample code/label Weighted δ56Fe standard deviation |
spellingShingle |
207-1260 COMPCORE Composite Core DEPTH sediment/rock DSDP/ODP/IODP sample designation Iron Joides Resolution Leg207 MC-ICP-MS Thermo-Finnigan Neptune North Atlantic Ocean Ocean Drilling Program ODP Percentage Sample code/label Weighted δ56Fe standard deviation Clayton, Robin E Nederbragt, Alexandra J Malinovsky, Dmitry Andersson, Per S Thurow, Juergen W (Table T2) Stable iron isotope ratios and amount of iron extracted by different methods from ODP Site 207-1260 sediments |
topic_facet |
207-1260 COMPCORE Composite Core DEPTH sediment/rock DSDP/ODP/IODP sample designation Iron Joides Resolution Leg207 MC-ICP-MS Thermo-Finnigan Neptune North Atlantic Ocean Ocean Drilling Program ODP Percentage Sample code/label Weighted δ56Fe standard deviation |
description |
Fe isotope measurements are presented for 10 samples from the Cenomanian-Turonian black shale unit in Hole 1260B at Demerara Rise. The samples bracket the latest Cenomanian ocean anoxic event and were selected to ascertain whether Fe isotopes can be used to gain a better understanding of oceanic redox conditions during the mid-Cretaceous. Three extraction procedures were used to provide Fe extracts that represent the Fe oxide (average FeCBD = 0.07 wt%, N = 8), Fe oxide-sulfide-carbonate (average FeAR = 0.34 wt%, N = 10), and total Fe fractions (average FeHF = 0.81 wt%, N = 10). Fe isotope measurements were conducted on all FeAR extracts as a priority as these were considered to best reflect changes in the redox environment. d56Fe values range between 0.02 per mil ± 0.09 per mil and -0.77 per mil ± 0.05 per mil and appear to correlate negatively with the C/N ratio and oxygen index of total organic carbon. Isotopic measurements of two Fe oxide (FeCBD) extracts show a much heavier isotopic composition (d56Fe = 0.74 per mil ± 0.08 per mil and 0.63 per mil ± 0.04 per mil), which suggests isotopic partitioning between different mineral components in the sediment. |
format |
Dataset |
author |
Clayton, Robin E Nederbragt, Alexandra J Malinovsky, Dmitry Andersson, Per S Thurow, Juergen W |
author_facet |
Clayton, Robin E Nederbragt, Alexandra J Malinovsky, Dmitry Andersson, Per S Thurow, Juergen W |
author_sort |
Clayton, Robin E |
title |
(Table T2) Stable iron isotope ratios and amount of iron extracted by different methods from ODP Site 207-1260 sediments |
title_short |
(Table T2) Stable iron isotope ratios and amount of iron extracted by different methods from ODP Site 207-1260 sediments |
title_full |
(Table T2) Stable iron isotope ratios and amount of iron extracted by different methods from ODP Site 207-1260 sediments |
title_fullStr |
(Table T2) Stable iron isotope ratios and amount of iron extracted by different methods from ODP Site 207-1260 sediments |
title_full_unstemmed |
(Table T2) Stable iron isotope ratios and amount of iron extracted by different methods from ODP Site 207-1260 sediments |
title_sort |
(table t2) stable iron isotope ratios and amount of iron extracted by different methods from odp site 207-1260 sediments |
publisher |
PANGAEA |
publishDate |
2006 |
url |
https://doi.pangaea.de/10.1594/PANGAEA.776004 https://doi.org/10.1594/PANGAEA.776004 |
op_coverage |
LATITUDE: 9.265667 * LONGITUDE: -54.544033 * DATE/TIME START: 2003-02-07T00:00:00 * DATE/TIME END: 2003-02-12T00:00:00 * MINIMUM DEPTH, sediment/rock: 407.75 m * MAXIMUM DEPTH, sediment/rock: 455.87 m |
long_lat |
ENVELOPE(-54.544033,-54.544033,9.265667,9.265667) |
genre |
North Atlantic |
genre_facet |
North Atlantic |
op_source |
Supplement to: Clayton, Robin E; Nederbragt, Alexandra J; Malinovsky, Dmitry; Andersson, Per S; Thurow, Juergen W (2007): Data report: iron isotope geochemistry of mid-Cretaceous organic-rich sediments at Demerara Rise (ODP Leg 207). In: Mosher, DC; Erbacher, J; Malone, MJ (eds.) Proceedings of the Ocean Drilling Program, Scientific Results, College Station, TX (Ocean Drilling Program), 207, 1-14, https://doi.org/10.2973/odp.proc.sr.207.109.2007 |
op_relation |
https://doi.pangaea.de/10.1594/PANGAEA.776004 https://doi.org/10.1594/PANGAEA.776004 |
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.776004 https://doi.org/10.2973/odp.proc.sr.207.109.2007 |
_version_ |
1766134682415529984 |