Sedimentary changes on the Southeastern Brazilian upper slope during the last 35,000 years
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| Formato: | Artículo científico |
| Lenguaje: | en |
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Academia Brasileira de Ciências
2007
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| _version_ | 1876434874721632256 |
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| author | Michel Michaelovitch de Mahiques |
| author_facet | Michel Michaelovitch de Mahiques |
| contents | Sedimentary changes on the Southeastern Brazilian upper slope during the last 35,000 years Michel Michaelovitch de Mahiques Marcia C. Bícego Ilson C.A. Silveira Rafael A. Lourenço Marina M. Fukumoto Rubens C.L. Figueira Silvia H. Mello-E-Sousa Multidisciplinaria (Ciencias Naturales y Exactas) upper slope sedimentation accumulation rate Southeastern Brazil Afirst evaluation of the sedimentary changes, including accumulation of inorganic and organic carbon on the upper slopeoff Southeastern Brazil under different climatic conditions, based on the analysis of a sedimentary core, is here presented.Results indicate that sedimentation rate as well sedimentary characteristics, including the nature of the organic carbondeposited during the LGM (Last Glacial Maximum), were different from the present deposition, indicating higherprimary productivity during the LGM, to be accounted for by the higher values of marine organic carbon. Nevertheless,the higher values of Accumulation Rate of calcium carbonate and organic carbon can be credited to the higher valuesof the sedimentation rates. Conditions prevailing during Isotope Stage 3 may be considered intermediate as betweenthe LGM and the present day. The conditions for a higher primary productivity associated with the deposition of finerterrigenous sediments may be explained as a response to the offshoreward displacement of the main flow of the BrazilCurrent. 2007 artículo científico 0001-3765 https://www.redalyc.org/articulo.oa?id=32779118 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.1 Vol.79 |
| format | Artículo científico |
| id | redalyc_32779118 |
| institution | Redalyc |
| language | en |
| publishDate | 2007 |
| publisher | Academia Brasileira de Ciências |
| spellingShingle | Sedimentary changes on the Southeastern Brazilian upper slope during the last 35,000 years Michel Michaelovitch de Mahiques Multidisciplinaria (Ciencias Naturales y Exactas) upper slope sedimentation accumulation rate Southeastern Brazil Sedimentary changes on the Southeastern Brazilian upper slope during the last 35,000 years Michel Michaelovitch de Mahiques Marcia C. Bícego Ilson C.A. Silveira Rafael A. Lourenço Marina M. Fukumoto Rubens C.L. Figueira Silvia H. Mello-E-Sousa Multidisciplinaria (Ciencias Naturales y Exactas) upper slope sedimentation accumulation rate Southeastern Brazil Afirst evaluation of the sedimentary changes, including accumulation of inorganic and organic carbon on the upper slopeoff Southeastern Brazil under different climatic conditions, based on the analysis of a sedimentary core, is here presented.Results indicate that sedimentation rate as well sedimentary characteristics, including the nature of the organic carbondeposited during the LGM (Last Glacial Maximum), were different from the present deposition, indicating higherprimary productivity during the LGM, to be accounted for by the higher values of marine organic carbon. Nevertheless,the higher values of Accumulation Rate of calcium carbonate and organic carbon can be credited to the higher valuesof the sedimentation rates. Conditions prevailing during Isotope Stage 3 may be considered intermediate as betweenthe LGM and the present day. The conditions for a higher primary productivity associated with the deposition of finerterrigenous sediments may be explained as a response to the offshoreward displacement of the main flow of the BrazilCurrent. 2007 artículo científico 0001-3765 https://www.redalyc.org/articulo.oa?id=32779118 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.1 Vol.79 |
| title | Sedimentary changes on the Southeastern Brazilian upper slope during the last 35,000 years |
| topic | Multidisciplinaria (Ciencias Naturales y Exactas) upper slope sedimentation accumulation rate Southeastern Brazil |
| url | https://www.redalyc.org/articulo.oa?id=32779118 |