(Table S1) Geochemistry for sediment core MD02-2515
A high-resolution, 55-kyr long record of chalcophile and redox-sensitive trace element accumulation (Ag, Cd, Re, Mo) from MD02-2515, western Guaymas Basin, is investigated in conjunction with patterns in stratigraphy and productivity. High opal concentrations (~58 wt. %), representing increased diat...
Main Authors: | , , , , |
---|---|
Format: | Dataset |
Language: | English |
Published: |
PANGAEA
2015
|
Subjects: | |
Online Access: | https://doi.pangaea.de/10.1594/PANGAEA.841827 https://doi.org/10.1594/PANGAEA.841827 |
id |
ftpangaea:oai:pangaea.de:doi:10.1594/PANGAEA.841827 |
---|---|
record_format |
openpolar |
spelling |
ftpangaea:oai:pangaea.de:doi:10.1594/PANGAEA.841827 2023-05-15T16:30:33+02:00 (Table S1) Geochemistry for sediment core MD02-2515 Chang, Alice S Pichevin, Laetitia Pedersen, Thomas F Gray, Victoria Ganeshram, Raja S LATITUDE: 27.483500 * LONGITUDE: -112.074300 * DATE/TIME START: 2002-06-13T04:53:00 * DATE/TIME END: 2002-06-13T04:53:00 * MINIMUM DEPTH, sediment/rock: 0.035 m * MAXIMUM DEPTH, sediment/rock: 74.465 m 2015-01-22 text/tab-separated-values, 15516 data points https://doi.pangaea.de/10.1594/PANGAEA.841827 https://doi.org/10.1594/PANGAEA.841827 en eng PANGAEA Cheshire, Heather; Thurow, Juergen W (2013): High-resolution migration history of the Subtropical High/Trade Wind system of the northeastern Pacific during the last ~55 years: Implications for glacial atmospheric reorganization. Paleoceanography, 28(2), 319-333, https://doi.org/10.1002/palo.20031 https://doi.pangaea.de/10.1594/PANGAEA.841827 https://doi.org/10.1594/PANGAEA.841827 CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess CC-BY Supplement to: Chang, Alice S; Pichevin, Laetitia; Pedersen, Thomas F; Gray, Victoria; Ganeshram, Raja S (2015): New insights into productivity and redox-controlled trace element (Ag, Cd, Re, Mo) accumulation in a 55-kyr long sediment record from Guaymas Basin, Gulf of California. Paleoceanography, 30(2), 77-94, https://doi.org/10.1002/2014PA002681 AGE Aluminium Cadmium Cadmium/Aluminium ratio Calculated CALYPSO Calypso Corer Carbon organic total organic/Aluminium ratio Depth corrected sediment/rock Guaymas Basin IMAGES IMAGES VIII - MONA International Marine Global Change Study Iron Iron/Aluminium ratio Manganese Manganese/Aluminium ratio Marion Dufresne (1995) MD022515 MD02-2515 MD126 Measured Molybdenum Molybdenum/Aluminium ratio Nitrogen Opal biogenic silica Rhenium Rhenium/Aluminium ratio Sedimentation rate Silver Silver/Aluminium ratio δ13C organic carbon δ15N bulk sediment Dataset 2015 ftpangaea https://doi.org/10.1594/PANGAEA.841827 https://doi.org/10.1002/2014PA002681 https://doi.org/10.1002/palo.20031 2023-01-20T09:05:06Z A high-resolution, 55-kyr long record of chalcophile and redox-sensitive trace element accumulation (Ag, Cd, Re, Mo) from MD02-2515, western Guaymas Basin, is investigated in conjunction with patterns in stratigraphy and productivity. High opal concentrations (~58 wt. %), representing increased diatom production, coincide with laminated sediments, and dilute the concentrations of organic carbon (Corg) and metals. A similarity between opal and normalized Corg, Ag and Cd concentrations suggests delivery to the sediments by diatom export production, while patterns in normalized Re and Mo accumulation suggest a different emplacement mechanism. Although Mo enrichment in organic-rich, laminated sediments typically represents anoxic conditions at other locations, Mo (and Re) in Guaymas Basin is enriched in nonlaminated and bioturbated sediments that are representative of oxygenated conditions. Adsorption onto Fe- and/or Mn-oxyhydroxide surfaces during oxygenation inadequately explains both the Re and Mo enrichments. Thus, recently published mechanisms invoking direct Re and Mo removal from the water column and bioturbation-assisted irrigation of Re into the sediments are used to explain the counterintuitive observations in Guaymas Basin. The MD02-2515 stratigraphic and proxy records are also different from other records in the northeast Pacific in that there is little correspondence with Greenland Dansgaard-Oeschger interstadials. There is some correlation with Heinrich events, suggesting that ventilation of intermediate waters and/or reduced productivity may be important in controlling stratigraphy and trace element accumulation. The results question whether MD02-2515 records can be compared to northeast Pacific open-margin records, especially before 17 kyr BP. Dataset Greenland PANGAEA - Data Publisher for Earth & Environmental Science Greenland Pacific ENVELOPE(-112.074300,-112.074300,27.483500,27.483500) |
institution |
Open Polar |
collection |
PANGAEA - Data Publisher for Earth & Environmental Science |
op_collection_id |
ftpangaea |
language |
English |
topic |
AGE Aluminium Cadmium Cadmium/Aluminium ratio Calculated CALYPSO Calypso Corer Carbon organic total organic/Aluminium ratio Depth corrected sediment/rock Guaymas Basin IMAGES IMAGES VIII - MONA International Marine Global Change Study Iron Iron/Aluminium ratio Manganese Manganese/Aluminium ratio Marion Dufresne (1995) MD022515 MD02-2515 MD126 Measured Molybdenum Molybdenum/Aluminium ratio Nitrogen Opal biogenic silica Rhenium Rhenium/Aluminium ratio Sedimentation rate Silver Silver/Aluminium ratio δ13C organic carbon δ15N bulk sediment |
spellingShingle |
AGE Aluminium Cadmium Cadmium/Aluminium ratio Calculated CALYPSO Calypso Corer Carbon organic total organic/Aluminium ratio Depth corrected sediment/rock Guaymas Basin IMAGES IMAGES VIII - MONA International Marine Global Change Study Iron Iron/Aluminium ratio Manganese Manganese/Aluminium ratio Marion Dufresne (1995) MD022515 MD02-2515 MD126 Measured Molybdenum Molybdenum/Aluminium ratio Nitrogen Opal biogenic silica Rhenium Rhenium/Aluminium ratio Sedimentation rate Silver Silver/Aluminium ratio δ13C organic carbon δ15N bulk sediment Chang, Alice S Pichevin, Laetitia Pedersen, Thomas F Gray, Victoria Ganeshram, Raja S (Table S1) Geochemistry for sediment core MD02-2515 |
topic_facet |
AGE Aluminium Cadmium Cadmium/Aluminium ratio Calculated CALYPSO Calypso Corer Carbon organic total organic/Aluminium ratio Depth corrected sediment/rock Guaymas Basin IMAGES IMAGES VIII - MONA International Marine Global Change Study Iron Iron/Aluminium ratio Manganese Manganese/Aluminium ratio Marion Dufresne (1995) MD022515 MD02-2515 MD126 Measured Molybdenum Molybdenum/Aluminium ratio Nitrogen Opal biogenic silica Rhenium Rhenium/Aluminium ratio Sedimentation rate Silver Silver/Aluminium ratio δ13C organic carbon δ15N bulk sediment |
description |
A high-resolution, 55-kyr long record of chalcophile and redox-sensitive trace element accumulation (Ag, Cd, Re, Mo) from MD02-2515, western Guaymas Basin, is investigated in conjunction with patterns in stratigraphy and productivity. High opal concentrations (~58 wt. %), representing increased diatom production, coincide with laminated sediments, and dilute the concentrations of organic carbon (Corg) and metals. A similarity between opal and normalized Corg, Ag and Cd concentrations suggests delivery to the sediments by diatom export production, while patterns in normalized Re and Mo accumulation suggest a different emplacement mechanism. Although Mo enrichment in organic-rich, laminated sediments typically represents anoxic conditions at other locations, Mo (and Re) in Guaymas Basin is enriched in nonlaminated and bioturbated sediments that are representative of oxygenated conditions. Adsorption onto Fe- and/or Mn-oxyhydroxide surfaces during oxygenation inadequately explains both the Re and Mo enrichments. Thus, recently published mechanisms invoking direct Re and Mo removal from the water column and bioturbation-assisted irrigation of Re into the sediments are used to explain the counterintuitive observations in Guaymas Basin. The MD02-2515 stratigraphic and proxy records are also different from other records in the northeast Pacific in that there is little correspondence with Greenland Dansgaard-Oeschger interstadials. There is some correlation with Heinrich events, suggesting that ventilation of intermediate waters and/or reduced productivity may be important in controlling stratigraphy and trace element accumulation. The results question whether MD02-2515 records can be compared to northeast Pacific open-margin records, especially before 17 kyr BP. |
format |
Dataset |
author |
Chang, Alice S Pichevin, Laetitia Pedersen, Thomas F Gray, Victoria Ganeshram, Raja S |
author_facet |
Chang, Alice S Pichevin, Laetitia Pedersen, Thomas F Gray, Victoria Ganeshram, Raja S |
author_sort |
Chang, Alice S |
title |
(Table S1) Geochemistry for sediment core MD02-2515 |
title_short |
(Table S1) Geochemistry for sediment core MD02-2515 |
title_full |
(Table S1) Geochemistry for sediment core MD02-2515 |
title_fullStr |
(Table S1) Geochemistry for sediment core MD02-2515 |
title_full_unstemmed |
(Table S1) Geochemistry for sediment core MD02-2515 |
title_sort |
(table s1) geochemistry for sediment core md02-2515 |
publisher |
PANGAEA |
publishDate |
2015 |
url |
https://doi.pangaea.de/10.1594/PANGAEA.841827 https://doi.org/10.1594/PANGAEA.841827 |
op_coverage |
LATITUDE: 27.483500 * LONGITUDE: -112.074300 * DATE/TIME START: 2002-06-13T04:53:00 * DATE/TIME END: 2002-06-13T04:53:00 * MINIMUM DEPTH, sediment/rock: 0.035 m * MAXIMUM DEPTH, sediment/rock: 74.465 m |
long_lat |
ENVELOPE(-112.074300,-112.074300,27.483500,27.483500) |
geographic |
Greenland Pacific |
geographic_facet |
Greenland Pacific |
genre |
Greenland |
genre_facet |
Greenland |
op_source |
Supplement to: Chang, Alice S; Pichevin, Laetitia; Pedersen, Thomas F; Gray, Victoria; Ganeshram, Raja S (2015): New insights into productivity and redox-controlled trace element (Ag, Cd, Re, Mo) accumulation in a 55-kyr long sediment record from Guaymas Basin, Gulf of California. Paleoceanography, 30(2), 77-94, https://doi.org/10.1002/2014PA002681 |
op_relation |
Cheshire, Heather; Thurow, Juergen W (2013): High-resolution migration history of the Subtropical High/Trade Wind system of the northeastern Pacific during the last ~55 years: Implications for glacial atmospheric reorganization. Paleoceanography, 28(2), 319-333, https://doi.org/10.1002/palo.20031 https://doi.pangaea.de/10.1594/PANGAEA.841827 https://doi.org/10.1594/PANGAEA.841827 |
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.841827 https://doi.org/10.1002/2014PA002681 https://doi.org/10.1002/palo.20031 |
_version_ |
1766020282431045632 |