Barium and its Importance as an Indicator of (Paleo)Productivity
Fuente:
Redalyc
Saved in:
| Main Author: | |
|---|---|
| Format: | Artículo científico |
| Language: | en |
| Published: |
Academia Brasileira de Ciências
2016
|
| Subjects: | |
| Online Access: | |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1876436488682471424 |
|---|---|
| author | BIANCA T.P. LIGUORI |
| author_facet | BIANCA T.P. LIGUORI |
| contents | Barium and its Importance as an Indicator of (Paleo)Productivity BIANCA T.P. LIGUORI MARCELO G. DE ALMEIDA CARLOS E. DE REZENDE Multidisciplinaria (Ciencias Naturales y Exactas) Barite biogenic barium (paleo)productivity proxy Barium (Ba) is a trace element which occurs predominantly as barite mineral (BaSO 4 ) in the marine environment. Previous work suggests that barite concentrations are related to the organic carbon flux and marine biological debris in the water column suggesting a direct or indirect involvement in the marine biological cycling. In addition, barite has a high preservation rate (~30%) in sediments and it is less affected by early diagenesis than other proxies for productivity such as carbonates (~10%) and organic carbon (~1%), for example. Therefore, Ba is considered an excellent proxy for ocean (paleo)productivity. However, correlating barite to productivity involves some caveats. Specifically, the post-depositional formation of barite in oxic sediments can lead to Ba release into porewaters under anoxic conditions, which can form barite again under oxic conditions. This diagenetic formation is not correlated to export production as the seawater authigenic barite formed with decaying organic matter in the water column. Therefore, the main goal of this work is to briefly review the marine Ba cycle and highlight its importance for (paleo)productivity research. 2016 artículo científico 0001-3765 https://www.redalyc.org/articulo.oa?id=32748882007 en http://www.redalyc.org/revista.oa?id=327 Anais da Academia Brasileira de Ciências application/pdf Academia Brasileira de Ciências Anais da Academia Brasileira de Ciências (Brasil) Num.4 Vol.88 |
| format | Artículo científico |
| id | redalyc_32748882007 |
| institution | Redalyc |
| language | en |
| publishDate | 2016 |
| publisher | Academia Brasileira de Ciências |
| spellingShingle | Barium and its Importance as an Indicator of (Paleo)Productivity BIANCA T.P. LIGUORI Multidisciplinaria (Ciencias Naturales y Exactas) Barite biogenic barium (paleo)productivity proxy Barium and its Importance as an Indicator of (Paleo)Productivity BIANCA T.P. LIGUORI MARCELO G. DE ALMEIDA CARLOS E. DE REZENDE Multidisciplinaria (Ciencias Naturales y Exactas) Barite biogenic barium (paleo)productivity proxy Barium (Ba) is a trace element which occurs predominantly as barite mineral (BaSO 4 ) in the marine environment. Previous work suggests that barite concentrations are related to the organic carbon flux and marine biological debris in the water column suggesting a direct or indirect involvement in the marine biological cycling. In addition, barite has a high preservation rate (~30%) in sediments and it is less affected by early diagenesis than other proxies for productivity such as carbonates (~10%) and organic carbon (~1%), for example. Therefore, Ba is considered an excellent proxy for ocean (paleo)productivity. However, correlating barite to productivity involves some caveats. Specifically, the post-depositional formation of barite in oxic sediments can lead to Ba release into porewaters under anoxic conditions, which can form barite again under oxic conditions. This diagenetic formation is not correlated to export production as the seawater authigenic barite formed with decaying organic matter in the water column. Therefore, the main goal of this work is to briefly review the marine Ba cycle and highlight its importance for (paleo)productivity research. 2016 artículo científico 0001-3765 https://www.redalyc.org/articulo.oa?id=32748882007 en http://www.redalyc.org/revista.oa?id=327 Anais da Academia Brasileira de Ciências application/pdf Academia Brasileira de Ciências Anais da Academia Brasileira de Ciências (Brasil) Num.4 Vol.88 |
| title | Barium and its Importance as an Indicator of (Paleo)Productivity |
| topic | Multidisciplinaria (Ciencias Naturales y Exactas) Barite biogenic barium (paleo)productivity proxy |
| url | https://www.redalyc.org/articulo.oa?id=32748882007 |