Using mg isotopes to estimate natural calcite compositions and precipitation rates during the 2010 eyjafjallajökull eruption
Chemical weathering of silicate rocks is a key control on the long-term climate, via drawdown of atmospheric CO 2 . Magnesium isotopes are increasingly being used to trace weathering, but are often complicated by several coincident fractionating processes. Here we examine Mg isotope ratios of waters...
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Online Access: | https://hdl.handle.net/1983/4439aa25-9551-4753-8d30-f580cf7f6df8 https://research-information.bris.ac.uk/en/publications/4439aa25-9551-4753-8d30-f580cf7f6df8 https://doi.org/10.3389/feart.2019.00006 https://research-information.bris.ac.uk/ws/files/201205855/Full_text_PDF_final_published_version_.pdf http://www.scopus.com/inward/record.url?scp=85062193401&partnerID=8YFLogxK |
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ftubristolcris:oai:research-information.bris.ac.uk:publications/4439aa25-9551-4753-8d30-f580cf7f6df8 2024-02-04T10:00:16+01:00 Using mg isotopes to estimate natural calcite compositions and precipitation rates during the 2010 eyjafjallajökull eruption Pogge von Strandmann, Philip A.E. Olsson, Jonas Luu, Tu Han Gislason, Sigurður R. Burton, Kevin W. 2019-01-23 application/pdf https://hdl.handle.net/1983/4439aa25-9551-4753-8d30-f580cf7f6df8 https://research-information.bris.ac.uk/en/publications/4439aa25-9551-4753-8d30-f580cf7f6df8 https://doi.org/10.3389/feart.2019.00006 https://research-information.bris.ac.uk/ws/files/201205855/Full_text_PDF_final_published_version_.pdf http://www.scopus.com/inward/record.url?scp=85062193401&partnerID=8YFLogxK eng eng info:eu-repo/semantics/openAccess Pogge von Strandmann , P A E , Olsson , J , Luu , T H , Gislason , S R & Burton , K W 2019 , ' Using mg isotopes to estimate natural calcite compositions and precipitation rates during the 2010 eyjafjallajökull eruption ' , Frontiers in Earth Science , vol. 7 , 6 . https://doi.org/10.3389/feart.2019.00006 Basalt Carbonate Magnesium isotopes Travertine Weathering article 2019 ftubristolcris https://doi.org/10.3389/feart.2019.00006 2024-01-11T23:41:39Z Chemical weathering of silicate rocks is a key control on the long-term climate, via drawdown of atmospheric CO 2 . Magnesium isotopes are increasingly being used to trace weathering, but are often complicated by several coincident fractionating processes. Here we examine Mg isotope ratios of waters stemming from beneath lava flows from the 2010 Eyjafjallajökull eruption. Travertine calcite was observed directly precipitating from these high-TDS (total dissolved solids) waters, and were also sampled. This system therefore provides the opportunity to study natural Mg isotope fractionation by calcite. Riverine δ 26 Mg increase from −2.37 to +0.43% with flow distance, as isotopically light travertine precipitates (δ 26 Mg = −3.38 to −3.94%). The solution Mg isotope ratios also co-vary with pH, calcite saturation indices and Sr/Ca ratios, strongly indicating that they are dominantly controlled by carbonate precipitation. Using experimental isotopic fractionation factors and the measured δ 26 Mg values, we can predict the compositions of the precipitated travertines that are within uncertainty of the directly measured travertines. Hence, in some systems, Mg isotopes can be used to quantify carbonate precipitation. Article in Journal/Newspaper Eyjafjallajökull University of Bristol: Bristol Research Frontiers in Earth Science 7 |
institution |
Open Polar |
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University of Bristol: Bristol Research |
op_collection_id |
ftubristolcris |
language |
English |
topic |
Basalt Carbonate Magnesium isotopes Travertine Weathering |
spellingShingle |
Basalt Carbonate Magnesium isotopes Travertine Weathering Pogge von Strandmann, Philip A.E. Olsson, Jonas Luu, Tu Han Gislason, Sigurður R. Burton, Kevin W. Using mg isotopes to estimate natural calcite compositions and precipitation rates during the 2010 eyjafjallajökull eruption |
topic_facet |
Basalt Carbonate Magnesium isotopes Travertine Weathering |
description |
Chemical weathering of silicate rocks is a key control on the long-term climate, via drawdown of atmospheric CO 2 . Magnesium isotopes are increasingly being used to trace weathering, but are often complicated by several coincident fractionating processes. Here we examine Mg isotope ratios of waters stemming from beneath lava flows from the 2010 Eyjafjallajökull eruption. Travertine calcite was observed directly precipitating from these high-TDS (total dissolved solids) waters, and were also sampled. This system therefore provides the opportunity to study natural Mg isotope fractionation by calcite. Riverine δ 26 Mg increase from −2.37 to +0.43% with flow distance, as isotopically light travertine precipitates (δ 26 Mg = −3.38 to −3.94%). The solution Mg isotope ratios also co-vary with pH, calcite saturation indices and Sr/Ca ratios, strongly indicating that they are dominantly controlled by carbonate precipitation. Using experimental isotopic fractionation factors and the measured δ 26 Mg values, we can predict the compositions of the precipitated travertines that are within uncertainty of the directly measured travertines. Hence, in some systems, Mg isotopes can be used to quantify carbonate precipitation. |
format |
Article in Journal/Newspaper |
author |
Pogge von Strandmann, Philip A.E. Olsson, Jonas Luu, Tu Han Gislason, Sigurður R. Burton, Kevin W. |
author_facet |
Pogge von Strandmann, Philip A.E. Olsson, Jonas Luu, Tu Han Gislason, Sigurður R. Burton, Kevin W. |
author_sort |
Pogge von Strandmann, Philip A.E. |
title |
Using mg isotopes to estimate natural calcite compositions and precipitation rates during the 2010 eyjafjallajökull eruption |
title_short |
Using mg isotopes to estimate natural calcite compositions and precipitation rates during the 2010 eyjafjallajökull eruption |
title_full |
Using mg isotopes to estimate natural calcite compositions and precipitation rates during the 2010 eyjafjallajökull eruption |
title_fullStr |
Using mg isotopes to estimate natural calcite compositions and precipitation rates during the 2010 eyjafjallajökull eruption |
title_full_unstemmed |
Using mg isotopes to estimate natural calcite compositions and precipitation rates during the 2010 eyjafjallajökull eruption |
title_sort |
using mg isotopes to estimate natural calcite compositions and precipitation rates during the 2010 eyjafjallajökull eruption |
publishDate |
2019 |
url |
https://hdl.handle.net/1983/4439aa25-9551-4753-8d30-f580cf7f6df8 https://research-information.bris.ac.uk/en/publications/4439aa25-9551-4753-8d30-f580cf7f6df8 https://doi.org/10.3389/feart.2019.00006 https://research-information.bris.ac.uk/ws/files/201205855/Full_text_PDF_final_published_version_.pdf http://www.scopus.com/inward/record.url?scp=85062193401&partnerID=8YFLogxK |
genre |
Eyjafjallajökull |
genre_facet |
Eyjafjallajökull |
op_source |
Pogge von Strandmann , P A E , Olsson , J , Luu , T H , Gislason , S R & Burton , K W 2019 , ' Using mg isotopes to estimate natural calcite compositions and precipitation rates during the 2010 eyjafjallajökull eruption ' , Frontiers in Earth Science , vol. 7 , 6 . https://doi.org/10.3389/feart.2019.00006 |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.3389/feart.2019.00006 |
container_title |
Frontiers in Earth Science |
container_volume |
7 |
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1789965456602300416 |