Physical, chemical and geological properties of sediments from the central equatorial Pacific
The solution rate of biogenic opal in near-surface sediments in the Central Equatorial Pacific is three to eight orders of magnitude lower than similar acid-cleaned samples. Iron, magnesium and calcium aluminosilicates may be the minerals which are forming on the surface of the opal and reducing its...
Main Author: | |
---|---|
Format: | Dataset |
Language: | English |
Published: |
PANGAEA
1973
|
Subjects: | |
Online Access: | https://doi.pangaea.de/10.1594/PANGAEA.735133 https://doi.org/10.1594/PANGAEA.735133 |
id |
ftpangaea:oai:pangaea.de:doi:10.1594/PANGAEA.735133 |
---|---|
record_format |
openpolar |
spelling |
ftpangaea:oai:pangaea.de:doi:10.1594/PANGAEA.735133 2023-05-15T13:42:09+02:00 Physical, chemical and geological properties of sediments from the central equatorial Pacific Hurd, David C MEDIAN LATITUDE: 5.703854 * MEDIAN LONGITUDE: 171.241100 * SOUTH-BOUND LATITUDE: -0.516700 * WEST-BOUND LONGITUDE: 145.650000 * NORTH-BOUND LATITUDE: 11.633300 * EAST-BOUND LONGITUDE: -163.333000 * DATE/TIME START: 1970-01-01T00:00:00 * DATE/TIME END: 1970-01-01T00:00:00 1973-03-16 application/zip, 13 datasets https://doi.pangaea.de/10.1594/PANGAEA.735133 https://doi.org/10.1594/PANGAEA.735133 en eng PANGAEA https://doi.pangaea.de/10.1594/PANGAEA.735133 https://doi.org/10.1594/PANGAEA.735133 CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess CC-BY Supplement to: Hurd, David C (1973): Interactions of biogenic opal, sediment and seawater in the Central Equatorial Pacific. Geochimica et Cosmochimica Acta, 37(10), 2257-2266, https://doi.org/10.1016/0016-7037(73)90103-8 FFC Free fall corer GC Gravity corer Hurd_100 Hurd_101 Hurd_102 Hurd_90 Hurd_91 Hurd_92 Hurd_93 Hurd_94 Hurd_95 Hurd_96 Hurd_97 Hurd_98 Hurd_99 Silicon Cycling in the World Ocean SINOPS Dataset 1973 ftpangaea https://doi.org/10.1594/PANGAEA.735133 https://doi.org/10.1016/0016-7037(73)90103-8 2023-01-20T07:31:41Z The solution rate of biogenic opal in near-surface sediments in the Central Equatorial Pacific is three to eight orders of magnitude lower than similar acid-cleaned samples. Iron, magnesium and calcium aluminosilicates may be the minerals which are forming on the surface of the opal and reducing its solution rate. The scale height of the system studied suggests that diffusive and not advective processes are primarily responsible for the removal of dissolved silica in sediments. Solution budget calculations for this area suggest that 90-99 per cent of the biogenic opal produced in surface waters dissolves before reaching the sediment-water interface; an additional amount dissolves within the sediment and diffuses into bottom waters leaving 0.05-0.15 per cent of the original amount of opal produced by organisms in the sedimentary record. The relative solution potential of the upper 1000 m of the water column varies by more than an order of magnitude from the Antarctic to Equator and may have a pronounced effect on the accumulation rate of biogenic opal in underlying sediments. Dataset Antarc* Antarctic PANGAEA - Data Publisher for Earth & Environmental Science Antarctic The Antarctic Pacific ENVELOPE(145.650000,-163.333000,11.633300,-0.516700) |
institution |
Open Polar |
collection |
PANGAEA - Data Publisher for Earth & Environmental Science |
op_collection_id |
ftpangaea |
language |
English |
topic |
FFC Free fall corer GC Gravity corer Hurd_100 Hurd_101 Hurd_102 Hurd_90 Hurd_91 Hurd_92 Hurd_93 Hurd_94 Hurd_95 Hurd_96 Hurd_97 Hurd_98 Hurd_99 Silicon Cycling in the World Ocean SINOPS |
spellingShingle |
FFC Free fall corer GC Gravity corer Hurd_100 Hurd_101 Hurd_102 Hurd_90 Hurd_91 Hurd_92 Hurd_93 Hurd_94 Hurd_95 Hurd_96 Hurd_97 Hurd_98 Hurd_99 Silicon Cycling in the World Ocean SINOPS Hurd, David C Physical, chemical and geological properties of sediments from the central equatorial Pacific |
topic_facet |
FFC Free fall corer GC Gravity corer Hurd_100 Hurd_101 Hurd_102 Hurd_90 Hurd_91 Hurd_92 Hurd_93 Hurd_94 Hurd_95 Hurd_96 Hurd_97 Hurd_98 Hurd_99 Silicon Cycling in the World Ocean SINOPS |
description |
The solution rate of biogenic opal in near-surface sediments in the Central Equatorial Pacific is three to eight orders of magnitude lower than similar acid-cleaned samples. Iron, magnesium and calcium aluminosilicates may be the minerals which are forming on the surface of the opal and reducing its solution rate. The scale height of the system studied suggests that diffusive and not advective processes are primarily responsible for the removal of dissolved silica in sediments. Solution budget calculations for this area suggest that 90-99 per cent of the biogenic opal produced in surface waters dissolves before reaching the sediment-water interface; an additional amount dissolves within the sediment and diffuses into bottom waters leaving 0.05-0.15 per cent of the original amount of opal produced by organisms in the sedimentary record. The relative solution potential of the upper 1000 m of the water column varies by more than an order of magnitude from the Antarctic to Equator and may have a pronounced effect on the accumulation rate of biogenic opal in underlying sediments. |
format |
Dataset |
author |
Hurd, David C |
author_facet |
Hurd, David C |
author_sort |
Hurd, David C |
title |
Physical, chemical and geological properties of sediments from the central equatorial Pacific |
title_short |
Physical, chemical and geological properties of sediments from the central equatorial Pacific |
title_full |
Physical, chemical and geological properties of sediments from the central equatorial Pacific |
title_fullStr |
Physical, chemical and geological properties of sediments from the central equatorial Pacific |
title_full_unstemmed |
Physical, chemical and geological properties of sediments from the central equatorial Pacific |
title_sort |
physical, chemical and geological properties of sediments from the central equatorial pacific |
publisher |
PANGAEA |
publishDate |
1973 |
url |
https://doi.pangaea.de/10.1594/PANGAEA.735133 https://doi.org/10.1594/PANGAEA.735133 |
op_coverage |
MEDIAN LATITUDE: 5.703854 * MEDIAN LONGITUDE: 171.241100 * SOUTH-BOUND LATITUDE: -0.516700 * WEST-BOUND LONGITUDE: 145.650000 * NORTH-BOUND LATITUDE: 11.633300 * EAST-BOUND LONGITUDE: -163.333000 * DATE/TIME START: 1970-01-01T00:00:00 * DATE/TIME END: 1970-01-01T00:00:00 |
long_lat |
ENVELOPE(145.650000,-163.333000,11.633300,-0.516700) |
geographic |
Antarctic The Antarctic Pacific |
geographic_facet |
Antarctic The Antarctic Pacific |
genre |
Antarc* Antarctic |
genre_facet |
Antarc* Antarctic |
op_source |
Supplement to: Hurd, David C (1973): Interactions of biogenic opal, sediment and seawater in the Central Equatorial Pacific. Geochimica et Cosmochimica Acta, 37(10), 2257-2266, https://doi.org/10.1016/0016-7037(73)90103-8 |
op_relation |
https://doi.pangaea.de/10.1594/PANGAEA.735133 https://doi.org/10.1594/PANGAEA.735133 |
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.735133 https://doi.org/10.1016/0016-7037(73)90103-8 |
_version_ |
1766163706069123072 |