Germanium content in marine sediments
In the geosphere, germanium (Ge) has a chemical behavior close to that of silicon (Si), and Ge commonly substitutes for Si (in small proportions) in silicates. Studying the evolution of the respective proportions of Ge and Si through time allows us to better constrain the global Si cycle. The marine...
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ftpangaea:oai:pangaea.de:doi:10.1594/PANGAEA.780213 2024-09-09T20:13:16+00:00 Germanium content in marine sediments Tribovillard, Nicolas Bout-Roumazeilles, Viviane Riboulleau, A Baudin, Francois Danelian, Taniel Riquier, Laurent MEDIAN LATITUDE: 2.852333 * MEDIAN LONGITUDE: 24.819283 * SOUTH-BOUND LATITUDE: -70.832000 * WEST-BOUND LONGITUDE: -14.574400 * NORTH-BOUND LATITUDE: 50.800000 * EAST-BOUND LONGITUDE: 98.440000 * DATE/TIME START: 1987-01-26T21:30:00 * DATE/TIME END: 1987-02-07T21:00:00 2011 application/zip, 3 datasets https://doi.pangaea.de/10.1594/PANGAEA.780213 https://doi.org/10.1594/PANGAEA.780213 en eng PANGAEA https://doi.pangaea.de/10.1594/PANGAEA.780213 https://doi.org/10.1594/PANGAEA.780213 CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess Supplement to: Tribovillard, Nicolas; Bout-Roumazeilles, Viviane; Riboulleau, A; Baudin, Francois; Danelian, Taniel; Riquier, Laurent (2011): Transfer of germanium to marine sediments: Insights from its accumulation in radiolarites and authigenic capture under reducing conditions. Some examples through geological ages. Chemical Geology, 282(3-4), 120-130, https://doi.org/10.1016/j.chemgeo.2011.01.015 113-692B 113-693B Boulonnais-Cliff Burubaital Chiang-Dao DRILL Drilling/drill rig France Joides Resolution Kazakhstan La-Serre-section Leg113 Ocean Drilling Program ODP OUTCROP Outcrop sample Weddell Sea dataset publication series 2011 ftpangaea https://doi.org/10.1594/PANGAEA.78021310.1016/j.chemgeo.2011.01.015 2024-07-24T02:31:21Z In the geosphere, germanium (Ge) has a chemical behavior close to that of silicon (Si), and Ge commonly substitutes for Si (in small proportions) in silicates. Studying the evolution of the respective proportions of Ge and Si through time allows us to better constrain the global Si cycle. The marine inventory of Ge present as dissolved germanic acid is facing two main sinks known through the study of present sediments: 1) incorporation into diatom frustules and transfer to sediments by these "shuttles", 2) capture of Ge released to pore water through frustule dissolution by authigenic mineral phases forming within reducing sediments. Our goals are to determine whether such a bio-induced transfer of Ge is also achieved by radiolarian and whether Ge could be trapped directly from seawater into authigenic phases with no intervention of opal-secreting organisms (shuttles). To this end, we studied two Paleozoic radiolarite formations and geological formations dated of Devonian, Jurassic and Cretaceous, deposited under more or less drastic redox conditions. Our results show that the Ge/Si values observed for these radiolarites are close to (slightly above) those measured from modern diatoms and sponges. In addition, our results confirm what is observed with some present-day reducing sediments: the ancient sediments that underwent reducing depositional conditions are authigenically enriched in Ge. Furthermore, it is probable that at least a part of the authigenic Ge came directly from seawater. The recurrence and extent (through time and space) of anoxic conditions affecting sea bottoms have been quite important through the geological times; consequently, the capture of Ge by reducing sediments must have impacted Ge distribution and in turn, the evolution of the seawater Ge/Si ratio. Other/Unknown Material Weddell Sea PANGAEA - Data Publisher for Earth & Environmental Science Weddell Sea Weddell Chiang ENVELOPE(162.650,162.650,-77.967,-77.967) ENVELOPE(-14.574400,98.440000,50.800000,-70.832000) |
institution |
Open Polar |
collection |
PANGAEA - Data Publisher for Earth & Environmental Science |
op_collection_id |
ftpangaea |
language |
English |
topic |
113-692B 113-693B Boulonnais-Cliff Burubaital Chiang-Dao DRILL Drilling/drill rig France Joides Resolution Kazakhstan La-Serre-section Leg113 Ocean Drilling Program ODP OUTCROP Outcrop sample Weddell Sea |
spellingShingle |
113-692B 113-693B Boulonnais-Cliff Burubaital Chiang-Dao DRILL Drilling/drill rig France Joides Resolution Kazakhstan La-Serre-section Leg113 Ocean Drilling Program ODP OUTCROP Outcrop sample Weddell Sea Tribovillard, Nicolas Bout-Roumazeilles, Viviane Riboulleau, A Baudin, Francois Danelian, Taniel Riquier, Laurent Germanium content in marine sediments |
topic_facet |
113-692B 113-693B Boulonnais-Cliff Burubaital Chiang-Dao DRILL Drilling/drill rig France Joides Resolution Kazakhstan La-Serre-section Leg113 Ocean Drilling Program ODP OUTCROP Outcrop sample Weddell Sea |
description |
In the geosphere, germanium (Ge) has a chemical behavior close to that of silicon (Si), and Ge commonly substitutes for Si (in small proportions) in silicates. Studying the evolution of the respective proportions of Ge and Si through time allows us to better constrain the global Si cycle. The marine inventory of Ge present as dissolved germanic acid is facing two main sinks known through the study of present sediments: 1) incorporation into diatom frustules and transfer to sediments by these "shuttles", 2) capture of Ge released to pore water through frustule dissolution by authigenic mineral phases forming within reducing sediments. Our goals are to determine whether such a bio-induced transfer of Ge is also achieved by radiolarian and whether Ge could be trapped directly from seawater into authigenic phases with no intervention of opal-secreting organisms (shuttles). To this end, we studied two Paleozoic radiolarite formations and geological formations dated of Devonian, Jurassic and Cretaceous, deposited under more or less drastic redox conditions. Our results show that the Ge/Si values observed for these radiolarites are close to (slightly above) those measured from modern diatoms and sponges. In addition, our results confirm what is observed with some present-day reducing sediments: the ancient sediments that underwent reducing depositional conditions are authigenically enriched in Ge. Furthermore, it is probable that at least a part of the authigenic Ge came directly from seawater. The recurrence and extent (through time and space) of anoxic conditions affecting sea bottoms have been quite important through the geological times; consequently, the capture of Ge by reducing sediments must have impacted Ge distribution and in turn, the evolution of the seawater Ge/Si ratio. |
format |
Other/Unknown Material |
author |
Tribovillard, Nicolas Bout-Roumazeilles, Viviane Riboulleau, A Baudin, Francois Danelian, Taniel Riquier, Laurent |
author_facet |
Tribovillard, Nicolas Bout-Roumazeilles, Viviane Riboulleau, A Baudin, Francois Danelian, Taniel Riquier, Laurent |
author_sort |
Tribovillard, Nicolas |
title |
Germanium content in marine sediments |
title_short |
Germanium content in marine sediments |
title_full |
Germanium content in marine sediments |
title_fullStr |
Germanium content in marine sediments |
title_full_unstemmed |
Germanium content in marine sediments |
title_sort |
germanium content in marine sediments |
publisher |
PANGAEA |
publishDate |
2011 |
url |
https://doi.pangaea.de/10.1594/PANGAEA.780213 https://doi.org/10.1594/PANGAEA.780213 |
op_coverage |
MEDIAN LATITUDE: 2.852333 * MEDIAN LONGITUDE: 24.819283 * SOUTH-BOUND LATITUDE: -70.832000 * WEST-BOUND LONGITUDE: -14.574400 * NORTH-BOUND LATITUDE: 50.800000 * EAST-BOUND LONGITUDE: 98.440000 * DATE/TIME START: 1987-01-26T21:30:00 * DATE/TIME END: 1987-02-07T21:00:00 |
long_lat |
ENVELOPE(162.650,162.650,-77.967,-77.967) ENVELOPE(-14.574400,98.440000,50.800000,-70.832000) |
geographic |
Weddell Sea Weddell Chiang |
geographic_facet |
Weddell Sea Weddell Chiang |
genre |
Weddell Sea |
genre_facet |
Weddell Sea |
op_source |
Supplement to: Tribovillard, Nicolas; Bout-Roumazeilles, Viviane; Riboulleau, A; Baudin, Francois; Danelian, Taniel; Riquier, Laurent (2011): Transfer of germanium to marine sediments: Insights from its accumulation in radiolarites and authigenic capture under reducing conditions. Some examples through geological ages. Chemical Geology, 282(3-4), 120-130, https://doi.org/10.1016/j.chemgeo.2011.01.015 |
op_relation |
https://doi.pangaea.de/10.1594/PANGAEA.780213 https://doi.org/10.1594/PANGAEA.780213 |
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.78021310.1016/j.chemgeo.2011.01.015 |
_version_ |
1809814964110622720 |