Geochemical processes controlling silica concentrations in groundwaters of the Salado River drainage basin, Argentina

Chemical analyses of dissolved silica in the shallow groundwater of the lower part of the Salado River drainage basin indicate that silica values averaged 60 ppm. The groundwaters are oversaturated in relation to quartz, Na-plagioclase, K-feldspar, and the weathering of quartz and aluminosilicates a...

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Autores principales:	Miretzky, Patricia S., Conzonno, Victor Hugo, Fernández Cirelli, Alicia
Publicado:	2001
Materias:	Groundwater dissolved silica concentration Salado River drainage basin Silica solubility Weathering of silicate minerals Catchments Groundwater Sediments Silica Weathering Volcanic glass shards Analytical geochemistry drainage basin groundwater provenance silica water chemistry
Acceso en línea:	https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_03756742_v73_n3_p155_Miretzky http://hdl.handle.net/20.500.12110/paper_03756742_v73_n3_p155_Miretzky
Aporte de:	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires

id	paper:paper_03756742_v73_n3_p155_Miretzky
record_format	dspace
spelling	paper:paper_03756742_v73_n3_p155_Miretzky2023-06-08T15:38:09Z Geochemical processes controlling silica concentrations in groundwaters of the Salado River drainage basin, Argentina Miretzky, Patricia S. Conzonno, Victor Hugo Fernández Cirelli, Alicia Groundwater dissolved silica concentration Salado River drainage basin Silica solubility Weathering of silicate minerals Catchments Groundwater Sediments Silica Weathering Volcanic glass shards Analytical geochemistry drainage basin groundwater provenance silica water chemistry Chemical analyses of dissolved silica in the shallow groundwater of the lower part of the Salado River drainage basin indicate that silica values averaged 60 ppm. The groundwaters are oversaturated in relation to quartz, Na-plagioclase, K-feldspar, and the weathering of quartz and aluminosilicates appear to have little control on silica concentrations in solution. Groundwater is undersaturated with respect to amorphous silica present in the loessic sediments, and these sediments are specially important in the control of the groundwater composition. The sources of amorphous silica are volcanic glass shards and biogenic silica derived from plant (silicophytoliths, diatom frustules) or animal remains (sponge spicules) also present in the Pampean loess. Silicophytoliths and diatoms have also been reported in A soil horizon samples. The dissolution of amorphous silica most likely controls the high dissolved silica concentrations in groundwater. © 2001 Elsevier Science Ltd All rights reserved. Fil:Miretzky, P. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Conzonno, V. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Fernández Cirelli, A. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. 2001 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_03756742_v73_n3_p155_Miretzky http://hdl.handle.net/20.500.12110/paper_03756742_v73_n3_p155_Miretzky
institution	Universidad de Buenos Aires
institution_str	I-28
repository_str	R-134
collection	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic	Groundwater dissolved silica concentration Salado River drainage basin Silica solubility Weathering of silicate minerals Catchments Groundwater Sediments Silica Weathering Volcanic glass shards Analytical geochemistry drainage basin groundwater provenance silica water chemistry
spellingShingle	Groundwater dissolved silica concentration Salado River drainage basin Silica solubility Weathering of silicate minerals Catchments Groundwater Sediments Silica Weathering Volcanic glass shards Analytical geochemistry drainage basin groundwater provenance silica water chemistry Miretzky, Patricia S. Conzonno, Victor Hugo Fernández Cirelli, Alicia Geochemical processes controlling silica concentrations in groundwaters of the Salado River drainage basin, Argentina
topic_facet	Groundwater dissolved silica concentration Salado River drainage basin Silica solubility Weathering of silicate minerals Catchments Groundwater Sediments Silica Weathering Volcanic glass shards Analytical geochemistry drainage basin groundwater provenance silica water chemistry
description	Chemical analyses of dissolved silica in the shallow groundwater of the lower part of the Salado River drainage basin indicate that silica values averaged 60 ppm. The groundwaters are oversaturated in relation to quartz, Na-plagioclase, K-feldspar, and the weathering of quartz and aluminosilicates appear to have little control on silica concentrations in solution. Groundwater is undersaturated with respect to amorphous silica present in the loessic sediments, and these sediments are specially important in the control of the groundwater composition. The sources of amorphous silica are volcanic glass shards and biogenic silica derived from plant (silicophytoliths, diatom frustules) or animal remains (sponge spicules) also present in the Pampean loess. Silicophytoliths and diatoms have also been reported in A soil horizon samples. The dissolution of amorphous silica most likely controls the high dissolved silica concentrations in groundwater. © 2001 Elsevier Science Ltd All rights reserved.
author	Miretzky, Patricia S. Conzonno, Victor Hugo Fernández Cirelli, Alicia
author_facet	Miretzky, Patricia S. Conzonno, Victor Hugo Fernández Cirelli, Alicia
author_sort	Miretzky, Patricia S.
title	Geochemical processes controlling silica concentrations in groundwaters of the Salado River drainage basin, Argentina
title_short	Geochemical processes controlling silica concentrations in groundwaters of the Salado River drainage basin, Argentina
title_full	Geochemical processes controlling silica concentrations in groundwaters of the Salado River drainage basin, Argentina
title_fullStr	Geochemical processes controlling silica concentrations in groundwaters of the Salado River drainage basin, Argentina
title_full_unstemmed	Geochemical processes controlling silica concentrations in groundwaters of the Salado River drainage basin, Argentina
title_sort	geochemical processes controlling silica concentrations in groundwaters of the salado river drainage basin, argentina
publishDate	2001
url	https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_03756742_v73_n3_p155_Miretzky http://hdl.handle.net/20.500.12110/paper_03756742_v73_n3_p155_Miretzky
work_keys_str_mv	AT miretzkypatricias geochemicalprocessescontrollingsilicaconcentrationsingroundwatersofthesaladoriverdrainagebasinargentina AT conzonnovictorhugo geochemicalprocessescontrollingsilicaconcentrationsingroundwatersofthesaladoriverdrainagebasinargentina AT fernandezcirellialicia geochemicalprocessescontrollingsilicaconcentrationsingroundwatersofthesaladoriverdrainagebasinargentina
_version_	1768544643539009536

Geochemical processes controlling silica concentrations in groundwaters of the Salado River drainage basin, Argentina

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