Geochemical analysis at ODP Site 207-1259 from the Demerara Rise in the western equatorial Atlantic
Organic carbon-rich shales deposited during the Coniacian–Santonian Oceanic Anoxic Event 3 were drilled during ODP Leg 207 at Demerara Rise. We present integrated high-resolution geochemical records of core intervals from ODP Sites 1259 and 1261 both from nannofossil biozone CC14. Our results reveal...
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ftpangaea:oai:pangaea.de:doi:10.1594/PANGAEA.732377 2024-09-15T18:24:30+00:00 Geochemical analysis at ODP Site 207-1259 from the Demerara Rise in the western equatorial Atlantic März, Christian Beckmann, Britta Franke, C Vogt, Christoph Wagner, Thomas Kasten, Sabine LATITUDE: 9.300400 * LONGITUDE: -54.199517 * DATE/TIME START: 2003-02-01T00:00:00 * DATE/TIME END: 2003-02-16T00:00:00 * MINIMUM DEPTH, sediment/rock: 499.605 m * MAXIMUM DEPTH, sediment/rock: 500.615 m 2009 text/tab-separated-values, 4590 data points https://doi.pangaea.de/10.1594/PANGAEA.732377 https://doi.org/10.1594/PANGAEA.732377 en eng PANGAEA https://doi.pangaea.de/10.1594/PANGAEA.732377 https://doi.org/10.1594/PANGAEA.732377 CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess Supplement to: März, Christian; Beckmann, Britta; Franke, Christine; Vogt, Christoph; Wagner, Thomas; Kasten, Sabine (2009): Geochemical environment of the Coniacian-Santonian western tropical Atlantic at Demerara Rise. Palaeogeography, Palaeoclimatology, Palaeoecology, 273(3-4), 286-301, https://doi.org/10.1016/j.palaeo.2008.05.004 207-1259 Aluminium Barium Barium/Aluminium ratio Boron Calcium Calcium/Aluminium ratio Calculated Carbon organic total organic total/Aluminium ratio Carbonates Chromium Chromium/Aluminium ratio COMPCORE Composite Core Copper Copper/Aluminium ratio Depth reference sediment/rock Element analyser CS LECO CS-200 ICP-OES Inductively coupled plasma - optical emission spectrometry Iron Iron/Aluminium ratio Iron/Sulfur ratio Joides Resolution Leg207 Magnesium Magnesium/Aluminium ratio Manganese Manganese/Aluminium ratio Molybdenum Molybdenum/Aluminium ratio Nickel Nickel/Aluminium ratio North Atlantic Ocean Ocean Drilling Program ODP Phosphorus Phosphorus/Aluminium ratio Phosphorus pentoxide Potassium Potassium/Aluminium ratio Sodium dataset 2009 ftpangaea https://doi.org/10.1594/PANGAEA.73237710.1016/j.palaeo.2008.05.004 2024-08-21T00:02:26Z Organic carbon-rich shales deposited during the Coniacian–Santonian Oceanic Anoxic Event 3 were drilled during ODP Leg 207 at Demerara Rise. We present integrated high-resolution geochemical records of core intervals from ODP Sites 1259 and 1261 both from nannofossil biozone CC14. Our results reveal systematic variations in marine and detrital sediment contribution, depositional processes, and bottom water redox conditions during black shale formation at two locations on Demerara Rise in different paleo-water depths. A combination of redox proxies (Fe/S, P/Al, C/P, redox-sensitive/sulfide-forming trace metals Mn, Cd, Mo, Ni, V, Zn) and other analytical approaches (bulk sediment composition, P speciation, electron microscopy, X-ray diffraction) evidence anoxic to sulfidic bottom water and sediment conditions throughout the deposition of black shale. These extreme redox conditions persisted and were periodically punctuated by short-termed periods with less reducing bottom waters irrespective of paleo-water depth. Sediment supply at both sites was generally dominated by marine material (carbonate, organic matter, opal) although relationships of detrital proxies as well as glauconitic horizons support some influence of turbidites, winnowing bottom currents and/or variable detritus sources, along with less reducing bottom water at the proposed shallower location (ODP Site 1259). At Site 1261, located at greater paleo-depth, redox fluctuations were more regular, and steady hemipelagic sedimentation sustained the development of mostly undisturbed lamination in the sedimentary record. Strong similarities of the studied deposits exist with the stratigraphic older Cenomanian–Turonian OAE2 black shale sections at Demerara Rise, suggesting that the primary mechanisms controlling continental supply and ocean redox state were time-invariant and kept the western equatorial Atlantic margin widely anoxic over millions of years. Dataset North Atlantic PANGAEA - Data Publisher for Earth & Environmental Science ENVELOPE(-54.199517,-54.199517,9.300400,9.300400) |
institution |
Open Polar |
collection |
PANGAEA - Data Publisher for Earth & Environmental Science |
op_collection_id |
ftpangaea |
language |
English |
topic |
207-1259 Aluminium Barium Barium/Aluminium ratio Boron Calcium Calcium/Aluminium ratio Calculated Carbon organic total organic total/Aluminium ratio Carbonates Chromium Chromium/Aluminium ratio COMPCORE Composite Core Copper Copper/Aluminium ratio Depth reference sediment/rock Element analyser CS LECO CS-200 ICP-OES Inductively coupled plasma - optical emission spectrometry Iron Iron/Aluminium ratio Iron/Sulfur ratio Joides Resolution Leg207 Magnesium Magnesium/Aluminium ratio Manganese Manganese/Aluminium ratio Molybdenum Molybdenum/Aluminium ratio Nickel Nickel/Aluminium ratio North Atlantic Ocean Ocean Drilling Program ODP Phosphorus Phosphorus/Aluminium ratio Phosphorus pentoxide Potassium Potassium/Aluminium ratio Sodium |
spellingShingle |
207-1259 Aluminium Barium Barium/Aluminium ratio Boron Calcium Calcium/Aluminium ratio Calculated Carbon organic total organic total/Aluminium ratio Carbonates Chromium Chromium/Aluminium ratio COMPCORE Composite Core Copper Copper/Aluminium ratio Depth reference sediment/rock Element analyser CS LECO CS-200 ICP-OES Inductively coupled plasma - optical emission spectrometry Iron Iron/Aluminium ratio Iron/Sulfur ratio Joides Resolution Leg207 Magnesium Magnesium/Aluminium ratio Manganese Manganese/Aluminium ratio Molybdenum Molybdenum/Aluminium ratio Nickel Nickel/Aluminium ratio North Atlantic Ocean Ocean Drilling Program ODP Phosphorus Phosphorus/Aluminium ratio Phosphorus pentoxide Potassium Potassium/Aluminium ratio Sodium März, Christian Beckmann, Britta Franke, C Vogt, Christoph Wagner, Thomas Kasten, Sabine Geochemical analysis at ODP Site 207-1259 from the Demerara Rise in the western equatorial Atlantic |
topic_facet |
207-1259 Aluminium Barium Barium/Aluminium ratio Boron Calcium Calcium/Aluminium ratio Calculated Carbon organic total organic total/Aluminium ratio Carbonates Chromium Chromium/Aluminium ratio COMPCORE Composite Core Copper Copper/Aluminium ratio Depth reference sediment/rock Element analyser CS LECO CS-200 ICP-OES Inductively coupled plasma - optical emission spectrometry Iron Iron/Aluminium ratio Iron/Sulfur ratio Joides Resolution Leg207 Magnesium Magnesium/Aluminium ratio Manganese Manganese/Aluminium ratio Molybdenum Molybdenum/Aluminium ratio Nickel Nickel/Aluminium ratio North Atlantic Ocean Ocean Drilling Program ODP Phosphorus Phosphorus/Aluminium ratio Phosphorus pentoxide Potassium Potassium/Aluminium ratio Sodium |
description |
Organic carbon-rich shales deposited during the Coniacian–Santonian Oceanic Anoxic Event 3 were drilled during ODP Leg 207 at Demerara Rise. We present integrated high-resolution geochemical records of core intervals from ODP Sites 1259 and 1261 both from nannofossil biozone CC14. Our results reveal systematic variations in marine and detrital sediment contribution, depositional processes, and bottom water redox conditions during black shale formation at two locations on Demerara Rise in different paleo-water depths. A combination of redox proxies (Fe/S, P/Al, C/P, redox-sensitive/sulfide-forming trace metals Mn, Cd, Mo, Ni, V, Zn) and other analytical approaches (bulk sediment composition, P speciation, electron microscopy, X-ray diffraction) evidence anoxic to sulfidic bottom water and sediment conditions throughout the deposition of black shale. These extreme redox conditions persisted and were periodically punctuated by short-termed periods with less reducing bottom waters irrespective of paleo-water depth. Sediment supply at both sites was generally dominated by marine material (carbonate, organic matter, opal) although relationships of detrital proxies as well as glauconitic horizons support some influence of turbidites, winnowing bottom currents and/or variable detritus sources, along with less reducing bottom water at the proposed shallower location (ODP Site 1259). At Site 1261, located at greater paleo-depth, redox fluctuations were more regular, and steady hemipelagic sedimentation sustained the development of mostly undisturbed lamination in the sedimentary record. Strong similarities of the studied deposits exist with the stratigraphic older Cenomanian–Turonian OAE2 black shale sections at Demerara Rise, suggesting that the primary mechanisms controlling continental supply and ocean redox state were time-invariant and kept the western equatorial Atlantic margin widely anoxic over millions of years. |
format |
Dataset |
author |
März, Christian Beckmann, Britta Franke, C Vogt, Christoph Wagner, Thomas Kasten, Sabine |
author_facet |
März, Christian Beckmann, Britta Franke, C Vogt, Christoph Wagner, Thomas Kasten, Sabine |
author_sort |
März, Christian |
title |
Geochemical analysis at ODP Site 207-1259 from the Demerara Rise in the western equatorial Atlantic |
title_short |
Geochemical analysis at ODP Site 207-1259 from the Demerara Rise in the western equatorial Atlantic |
title_full |
Geochemical analysis at ODP Site 207-1259 from the Demerara Rise in the western equatorial Atlantic |
title_fullStr |
Geochemical analysis at ODP Site 207-1259 from the Demerara Rise in the western equatorial Atlantic |
title_full_unstemmed |
Geochemical analysis at ODP Site 207-1259 from the Demerara Rise in the western equatorial Atlantic |
title_sort |
geochemical analysis at odp site 207-1259 from the demerara rise in the western equatorial atlantic |
publisher |
PANGAEA |
publishDate |
2009 |
url |
https://doi.pangaea.de/10.1594/PANGAEA.732377 https://doi.org/10.1594/PANGAEA.732377 |
op_coverage |
LATITUDE: 9.300400 * LONGITUDE: -54.199517 * DATE/TIME START: 2003-02-01T00:00:00 * DATE/TIME END: 2003-02-16T00:00:00 * MINIMUM DEPTH, sediment/rock: 499.605 m * MAXIMUM DEPTH, sediment/rock: 500.615 m |
long_lat |
ENVELOPE(-54.199517,-54.199517,9.300400,9.300400) |
genre |
North Atlantic |
genre_facet |
North Atlantic |
op_source |
Supplement to: März, Christian; Beckmann, Britta; Franke, Christine; Vogt, Christoph; Wagner, Thomas; Kasten, Sabine (2009): Geochemical environment of the Coniacian-Santonian western tropical Atlantic at Demerara Rise. Palaeogeography, Palaeoclimatology, Palaeoecology, 273(3-4), 286-301, https://doi.org/10.1016/j.palaeo.2008.05.004 |
op_relation |
https://doi.pangaea.de/10.1594/PANGAEA.732377 https://doi.org/10.1594/PANGAEA.732377 |
op_rights |
CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1594/PANGAEA.73237710.1016/j.palaeo.2008.05.004 |
_version_ |
1810464867713286144 |