Nd and Pb isotope signatures on the Southeastern South American upper margin: Implications for sediment transport and source rocks
Neodymium and lead isotope values in sediment samples were used to interpret sediment transport and source rocks on the Southeastern South American upper margin. The sediments of the Argentinian margin exhibit an average ɛ Nd value of − 1.9, indicating the influence of the Andean rocks as sediment s...
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| Veröffentlicht in: | Marine geology 2008-04, Vol.250 (1), p.51-63 |
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| creator | de Mahiques, Michel Michaelovitch Tassinari, Colombo Celso Gaeta Marcolini, Susana Violante, Roberto A. Figueira, Rubens Cesar Lopes da Silveira, Ilson Carlos Almeida Burone, Leticia de Mello e Sousa, Silvia Helena |
| description | Neodymium and lead isotope values in sediment samples were used to interpret sediment transport and source rocks on the Southeastern South American upper margin.
The sediments of the Argentinian margin exhibit an average
ɛ
Nd value of −
1.9, indicating the influence of the Andean rocks as sediment sources. Sediments from the Río de La Plata estuary show an average
ɛ
Nd value of −
9.6 which is similar to that of the Southern Brazilian Upper Margin. Finally, sediments of Southeastern Brazil, which are associated with the transport of the Brazil Current exhibit an average
ɛ
Nd of −
13.0.
The Pb isotope signatures also confirm the differentiation of source rocks in the sedimentation of the study area. In addition, Pb isotopes helped to establish the extent of the influence of the Río de La Plata on the sedimentation of the Southern Brazilian margin.
In terms of Pb isotopes the sediments from the Río de La Plata estuary and Southern Brazil are more radiogenic than those of Southeastern Brazil and the Argentinian margin. |
| doi_str_mv | 10.1016/j.margeo.2007.11.007 |
| format | Article |
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The sediments of the Argentinian margin exhibit an average
ɛ
Nd value of −
1.9, indicating the influence of the Andean rocks as sediment sources. Sediments from the Río de La Plata estuary show an average
ɛ
Nd value of −
9.6 which is similar to that of the Southern Brazilian Upper Margin. Finally, sediments of Southeastern Brazil, which are associated with the transport of the Brazil Current exhibit an average
ɛ
Nd of −
13.0.
The Pb isotope signatures also confirm the differentiation of source rocks in the sedimentation of the study area. In addition, Pb isotopes helped to establish the extent of the influence of the Río de La Plata on the sedimentation of the Southern Brazilian margin.
In terms of Pb isotopes the sediments from the Río de La Plata estuary and Southern Brazil are more radiogenic than those of Southeastern Brazil and the Argentinian margin.</description><identifier>ISSN: 0025-3227</identifier><identifier>EISSN: 1872-6151</identifier><identifier>DOI: 10.1016/j.margeo.2007.11.007</identifier><language>eng</language><publisher>Elsevier B.V</publisher><subject>Marine ; neodymium and lead isotopes ; sedimentation ; Southwestern Atlantic upper margin</subject><ispartof>Marine geology, 2008-04, Vol.250 (1), p.51-63</ispartof><rights>2008 Elsevier B.V.</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-a360t-dd12d2c0abf443dd60ea4f5e27c6d7dfcb5ba1962afda1cc3db59b6e196cea3d3</citedby><cites>FETCH-LOGICAL-a360t-dd12d2c0abf443dd60ea4f5e27c6d7dfcb5ba1962afda1cc3db59b6e196cea3d3</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://dx.doi.org/10.1016/j.margeo.2007.11.007$$EHTML$$P50$$Gelsevier$$H</linktohtml><link.rule.ids>314,778,782,3539,27907,27908,45978</link.rule.ids></links><search><creatorcontrib>de Mahiques, Michel Michaelovitch</creatorcontrib><creatorcontrib>Tassinari, Colombo Celso Gaeta</creatorcontrib><creatorcontrib>Marcolini, Susana</creatorcontrib><creatorcontrib>Violante, Roberto A.</creatorcontrib><creatorcontrib>Figueira, Rubens Cesar Lopes</creatorcontrib><creatorcontrib>da Silveira, Ilson Carlos Almeida</creatorcontrib><creatorcontrib>Burone, Leticia</creatorcontrib><creatorcontrib>de Mello e Sousa, Silvia Helena</creatorcontrib><title>Nd and Pb isotope signatures on the Southeastern South American upper margin: Implications for sediment transport and source rocks</title><title>Marine geology</title><description>Neodymium and lead isotope values in sediment samples were used to interpret sediment transport and source rocks on the Southeastern South American upper margin.
The sediments of the Argentinian margin exhibit an average
ɛ
Nd value of −
1.9, indicating the influence of the Andean rocks as sediment sources. Sediments from the Río de La Plata estuary show an average
ɛ
Nd value of −
9.6 which is similar to that of the Southern Brazilian Upper Margin. Finally, sediments of Southeastern Brazil, which are associated with the transport of the Brazil Current exhibit an average
ɛ
Nd of −
13.0.
The Pb isotope signatures also confirm the differentiation of source rocks in the sedimentation of the study area. In addition, Pb isotopes helped to establish the extent of the influence of the Río de La Plata on the sedimentation of the Southern Brazilian margin.
In terms of Pb isotopes the sediments from the Río de La Plata estuary and Southern Brazil are more radiogenic than those of Southeastern Brazil and the Argentinian margin.</description><subject>Marine</subject><subject>neodymium and lead isotopes</subject><subject>sedimentation</subject><subject>Southwestern Atlantic upper margin</subject><issn>0025-3227</issn><issn>1872-6151</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2008</creationdate><recordtype>article</recordtype><recordid>eNp9UE1P3DAQtaoidbv0H_TgE7cEj7NJlh6Q0IoWpBUglZ4tx55svd3YweMg9covx0s4c3qa0fvQe4x9B1GCgOZ8Xw467jCUUoi2BCgzfGILWLeyaKCGz2whhKyLSsr2C_tKtBdCQAVywV7uLNfe8oeOOwopjMjJ7bxOU0TiwfP0F_nvMGXQlDD6-eBXA0ZntOfTOGLkx3znf_DbYTzkd3LBE-9D5ITWDegTT1F7GkNMb3EUpmiQx2D-0Sk76fWB8Ns7Ltmfn9ePm5tie__rdnO1LXTViFRYC9JKI3TXr1aVtY1AveprlK1pbGt709WdhotG6t5qMKayXX3RNZhfBnVlqyU7m33HGJ4mpKQGRwYPB-0xTKSkWK9lDSITVzPRxEAUsVdjdLnhfwVCHQdXezUPro6DKwCVIcsuZxnmEs8OoyLj0Ju8QESTlA3uY4NXGESP9w</recordid><startdate>20080421</startdate><enddate>20080421</enddate><creator>de Mahiques, Michel Michaelovitch</creator><creator>Tassinari, Colombo Celso Gaeta</creator><creator>Marcolini, Susana</creator><creator>Violante, Roberto A.</creator><creator>Figueira, Rubens Cesar Lopes</creator><creator>da Silveira, Ilson Carlos Almeida</creator><creator>Burone, Leticia</creator><creator>de Mello e Sousa, Silvia Helena</creator><general>Elsevier B.V</general><scope>AAYXX</scope><scope>CITATION</scope><scope>7TN</scope><scope>7UA</scope><scope>C1K</scope><scope>F1W</scope><scope>H96</scope><scope>L.G</scope></search><sort><creationdate>20080421</creationdate><title>Nd and Pb isotope signatures on the Southeastern South American upper margin: Implications for sediment transport and source rocks</title><author>de Mahiques, Michel Michaelovitch ; Tassinari, Colombo Celso Gaeta ; Marcolini, Susana ; Violante, Roberto A. ; Figueira, Rubens Cesar Lopes ; da Silveira, Ilson Carlos Almeida ; Burone, Leticia ; de Mello e Sousa, Silvia Helena</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-a360t-dd12d2c0abf443dd60ea4f5e27c6d7dfcb5ba1962afda1cc3db59b6e196cea3d3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2008</creationdate><topic>Marine</topic><topic>neodymium and lead isotopes</topic><topic>sedimentation</topic><topic>Southwestern Atlantic upper margin</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>de Mahiques, Michel Michaelovitch</creatorcontrib><creatorcontrib>Tassinari, Colombo Celso Gaeta</creatorcontrib><creatorcontrib>Marcolini, Susana</creatorcontrib><creatorcontrib>Violante, Roberto A.</creatorcontrib><creatorcontrib>Figueira, Rubens Cesar Lopes</creatorcontrib><creatorcontrib>da Silveira, Ilson Carlos Almeida</creatorcontrib><creatorcontrib>Burone, Leticia</creatorcontrib><creatorcontrib>de Mello e Sousa, Silvia Helena</creatorcontrib><collection>CrossRef</collection><collection>Oceanic Abstracts</collection><collection>Water Resources Abstracts</collection><collection>Environmental Sciences and Pollution Management</collection><collection>ASFA: Aquatic Sciences and Fisheries Abstracts</collection><collection>Aquatic Science & Fisheries Abstracts (ASFA) 2: Ocean Technology, Policy & Non-Living Resources</collection><collection>Aquatic Science & Fisheries Abstracts (ASFA) Professional</collection><jtitle>Marine geology</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>de Mahiques, Michel Michaelovitch</au><au>Tassinari, Colombo Celso Gaeta</au><au>Marcolini, Susana</au><au>Violante, Roberto A.</au><au>Figueira, Rubens Cesar Lopes</au><au>da Silveira, Ilson Carlos Almeida</au><au>Burone, Leticia</au><au>de Mello e Sousa, Silvia Helena</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Nd and Pb isotope signatures on the Southeastern South American upper margin: Implications for sediment transport and source rocks</atitle><jtitle>Marine geology</jtitle><date>2008-04-21</date><risdate>2008</risdate><volume>250</volume><issue>1</issue><spage>51</spage><epage>63</epage><pages>51-63</pages><issn>0025-3227</issn><eissn>1872-6151</eissn><abstract>Neodymium and lead isotope values in sediment samples were used to interpret sediment transport and source rocks on the Southeastern South American upper margin.
The sediments of the Argentinian margin exhibit an average
ɛ
Nd value of −
1.9, indicating the influence of the Andean rocks as sediment sources. Sediments from the Río de La Plata estuary show an average
ɛ
Nd value of −
9.6 which is similar to that of the Southern Brazilian Upper Margin. Finally, sediments of Southeastern Brazil, which are associated with the transport of the Brazil Current exhibit an average
ɛ
Nd of −
13.0.
The Pb isotope signatures also confirm the differentiation of source rocks in the sedimentation of the study area. In addition, Pb isotopes helped to establish the extent of the influence of the Río de La Plata on the sedimentation of the Southern Brazilian margin.
In terms of Pb isotopes the sediments from the Río de La Plata estuary and Southern Brazil are more radiogenic than those of Southeastern Brazil and the Argentinian margin.</abstract><pub>Elsevier B.V</pub><doi>10.1016/j.margeo.2007.11.007</doi><tpages>13</tpages></addata></record> |
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| ispartof | Marine geology, 2008-04, Vol.250 (1), p.51-63 |
| issn | 0025-3227 1872-6151 |
| language | eng |
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| source | Elsevier ScienceDirect Journals Complete - AutoHoldings |
| subjects | Marine neodymium and lead isotopes sedimentation Southwestern Atlantic upper margin |
| title | Nd and Pb isotope signatures on the Southeastern South American upper margin: Implications for sediment transport and source rocks |
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