Inorganic composition of suspended sediments in the Acre River, Amazon Basin, Brazil

The purpose of this study was to determine the chemical and mineralogical composition of suspended sediments from the Acre River, located in the Purus Basin, upper Amazon basin, a region associated with the Fitzcarrald Arch. The elemental and mineralogical compositions of the sediments were assessed...

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Main Authors: Alejandro Fonseca Duarte, Adriana Gioda
Format: Article
Language:English
Published: Asociación Argentina de Sedimentología
Series:Latin American Journal of Sedimentology and Basin Analysis
Subjects:
Online Access:http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S1851-49792014000100002&lng=en&tlng=en
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author Alejandro Fonseca Duarte
Adriana Gioda
author_facet Alejandro Fonseca Duarte
Adriana Gioda
author_sort Alejandro Fonseca Duarte
collection DOAJ
description The purpose of this study was to determine the chemical and mineralogical composition of suspended sediments from the Acre River, located in the Purus Basin, upper Amazon basin, a region associated with the Fitzcarrald Arch. The elemental and mineralogical compositions of the sediments were assessed by using mass and atomic spectroscopy, and X-ray diffraction. A total of 46 samples were collected between 2008 and 2011 from four sites in the study area during wet and dry seasons. The suspended sediments contained feldspar, kaolinite, illite and quartz as well as the elements Hg, Zn, V, Ti, Si, Pb, Ni, Na, Mn, Mg, K, Fe, Cu, Cr, Cd, Ca, Al, S, and P in different proportions that were associated with the various weathering reactions linked to physical, chemical and biological processes in the region. The obtained results represent the first set of values and relationships regarding the mineralogy and chemical identification of the suspended sediments in the Acre River and can be used as a reference for the geochemical characteristics of the Purus Basin. Such regional studies will become increasingly necessary to observe the impacts of climate change and human activities on the suspended sediment load and composition of the Amazon River.
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spelling doaj.art-5858c7fe951d436a8239f919d85555d72023-12-02T02:45:28ZengAsociación Argentina de SedimentologíaLatin American Journal of Sedimentology and Basin Analysis1851-4979211315S1851-49792014000100002Inorganic composition of suspended sediments in the Acre River, Amazon Basin, BrazilAlejandro Fonseca Duarte0Adriana Gioda1Federal University of Acre (UFAC)Pontifical Catholic UniversityThe purpose of this study was to determine the chemical and mineralogical composition of suspended sediments from the Acre River, located in the Purus Basin, upper Amazon basin, a region associated with the Fitzcarrald Arch. The elemental and mineralogical compositions of the sediments were assessed by using mass and atomic spectroscopy, and X-ray diffraction. A total of 46 samples were collected between 2008 and 2011 from four sites in the study area during wet and dry seasons. The suspended sediments contained feldspar, kaolinite, illite and quartz as well as the elements Hg, Zn, V, Ti, Si, Pb, Ni, Na, Mn, Mg, K, Fe, Cu, Cr, Cd, Ca, Al, S, and P in different proportions that were associated with the various weathering reactions linked to physical, chemical and biological processes in the region. The obtained results represent the first set of values and relationships regarding the mineralogy and chemical identification of the suspended sediments in the Acre River and can be used as a reference for the geochemical characteristics of the Purus Basin. Such regional studies will become increasingly necessary to observe the impacts of climate change and human activities on the suspended sediment load and composition of the Amazon River.http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S1851-49792014000100002&lng=en&tlng=enchemistry of sedimentsamazon basinacre river basin
spellingShingle Alejandro Fonseca Duarte
Adriana Gioda
Inorganic composition of suspended sediments in the Acre River, Amazon Basin, Brazil
Latin American Journal of Sedimentology and Basin Analysis
chemistry of sediments
amazon basin
acre river basin
title Inorganic composition of suspended sediments in the Acre River, Amazon Basin, Brazil
title_full Inorganic composition of suspended sediments in the Acre River, Amazon Basin, Brazil
title_fullStr Inorganic composition of suspended sediments in the Acre River, Amazon Basin, Brazil
title_full_unstemmed Inorganic composition of suspended sediments in the Acre River, Amazon Basin, Brazil
title_short Inorganic composition of suspended sediments in the Acre River, Amazon Basin, Brazil
title_sort inorganic composition of suspended sediments in the acre river amazon basin brazil
topic chemistry of sediments
amazon basin
acre river basin
url http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S1851-49792014000100002&lng=en&tlng=en
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