Geochemistry of Fe, Ti and Al as an indicator of volcanoclastic sedimentation in San Quintín coastal lagoon, Baja California, Mexico

The geochemistry of Fe, Ti and Al and the grain-size distribution were studied in 32 surficial sediment samples from San Quintín coastal lagoon (SQCL) in Baja California, in order to identify the presence of volcanoclastic sediment derived from the weathering and erosion of basaltic rocks from the S...

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Principais autores:	Navarro, E, Daesslé, LW, Camacho-Ibar, VF, Ortiz-Hernández, MC, Gutiérrez-Galindo, EA
Formato:	info:eu-repo/semantics/article
Idioma:	eng
Publicado em:	Iniversidad Autónoma de Baja California 2006
Assuntos:	sediment provenance heavy minerals metals titanium iron sedimento proveniencia minerales pesados metales titanio hierro
Acesso em linha:	https://www.cienciasmarinas.com.mx/index.php/cmarinas/article/view/1067
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id	repositorioinstitucional-20.500.12930-7406
record_format	dspace
institution	Repositorio Institucional
collection	DSpace
language	eng
topic	sediment provenance heavy minerals metals titanium iron sedimento proveniencia minerales pesados metales titanio hierro
spellingShingle	sediment provenance heavy minerals metals titanium iron sedimento proveniencia minerales pesados metales titanio hierro Navarro, E Daesslé, LW Camacho-Ibar, VF Ortiz-Hernández, MC Gutiérrez-Galindo, EA Geochemistry of Fe, Ti and Al as an indicator of volcanoclastic sedimentation in San Quintín coastal lagoon, Baja California, Mexico
description	The geochemistry of Fe, Ti and Al and the grain-size distribution were studied in 32 surficial sediment samples from San Quintín coastal lagoon (SQCL) in Baja California, in order to identify the presence of volcanoclastic sediment derived from the weathering and erosion of basaltic rocks from the San Quintín volcanic field (SQVF). The composition of the SQVF rocks is characterized by high Fe and Ti concentrations in comparison with the continental crust and Peninsular Ranges batholith. Similarly, the sediments from SQCL have significantly higher Fe concentrations (mean 3.73%, standard deviation [S] ±0.99) than other coastal sediments from Baja California and other regions. The high Fe concentrations normalized relative to the percentage of the <63-µm sediment fraction (Fenorm), indicate that the enrichment of Fe in some samples may in part be due to the presence of heavy minerals and/or rock particles, which were derived from the weathering and erosion of SQVF. The high concentrations of Ti (mean, 0.54%, S ±0.19) in the sediment are atypical for coastal and marine sediments. This enrichment as well as the high Ti/Al ratios at some sites within SQCL, especially Falsa Bay (FB), support the hypothesis of a volcanogenic influence. The sediment samples that have the highest proportion of amorphous Fe oxyhydroxides (≥50% of bulk Fe) were found in FB. This fact and the high Fenorm and Ti concentrations, as well as high Ti/Al ratios, suggest an association (at least in part) between the amorphous Fe oxyhydroxides and the volcanoclastic particles in some samples from FB; however, the high variability in geochemical characteristics of the sediment suggests a complex combination of hydrodinamic, mineralogical and diagenetic properties in SQCL.
format	info:eu-repo/semantics/article
author	Navarro, E Daesslé, LW Camacho-Ibar, VF Ortiz-Hernández, MC Gutiérrez-Galindo, EA
author_facet	Navarro, E Daesslé, LW Camacho-Ibar, VF Ortiz-Hernández, MC Gutiérrez-Galindo, EA
author_sort	Navarro, E
title	Geochemistry of Fe, Ti and Al as an indicator of volcanoclastic sedimentation in San Quintín coastal lagoon, Baja California, Mexico
title_short	Geochemistry of Fe, Ti and Al as an indicator of volcanoclastic sedimentation in San Quintín coastal lagoon, Baja California, Mexico
title_full	Geochemistry of Fe, Ti and Al as an indicator of volcanoclastic sedimentation in San Quintín coastal lagoon, Baja California, Mexico
title_fullStr	Geochemistry of Fe, Ti and Al as an indicator of volcanoclastic sedimentation in San Quintín coastal lagoon, Baja California, Mexico
title_full_unstemmed	Geochemistry of Fe, Ti and Al as an indicator of volcanoclastic sedimentation in San Quintín coastal lagoon, Baja California, Mexico
title_sort	geochemistry of fe, ti and al as an indicator of volcanoclastic sedimentation in san quintín coastal lagoon, baja california, mexico
publisher	Iniversidad Autónoma de Baja California
publishDate	2006
url	https://www.cienciasmarinas.com.mx/index.php/cmarinas/article/view/1067
_version_	1792609854090641408
spelling	repositorioinstitucional-20.500.12930-74062023-05-09T14:30:49Z Geochemistry of Fe, Ti and Al as an indicator of volcanoclastic sedimentation in San Quintín coastal lagoon, Baja California, Mexico La geoquímica de Fe, Ti y Al como indicadora de la sedimentación volcanoclástica en la laguna costera de San Quintín, Baja California, México Navarro, E Daesslé, LW Camacho-Ibar, VF Ortiz-Hernández, MC Gutiérrez-Galindo, EA sediment provenance heavy minerals metals titanium iron sedimento proveniencia minerales pesados metales titanio hierro The geochemistry of Fe, Ti and Al and the grain-size distribution were studied in 32 surficial sediment samples from San Quintín coastal lagoon (SQCL) in Baja California, in order to identify the presence of volcanoclastic sediment derived from the weathering and erosion of basaltic rocks from the San Quintín volcanic field (SQVF). The composition of the SQVF rocks is characterized by high Fe and Ti concentrations in comparison with the continental crust and Peninsular Ranges batholith. Similarly, the sediments from SQCL have significantly higher Fe concentrations (mean 3.73%, standard deviation [S] ±0.99) than other coastal sediments from Baja California and other regions. The high Fe concentrations normalized relative to the percentage of the <63-µm sediment fraction (Fenorm), indicate that the enrichment of Fe in some samples may in part be due to the presence of heavy minerals and/or rock particles, which were derived from the weathering and erosion of SQVF. The high concentrations of Ti (mean, 0.54%, S ±0.19) in the sediment are atypical for coastal and marine sediments. This enrichment as well as the high Ti/Al ratios at some sites within SQCL, especially Falsa Bay (FB), support the hypothesis of a volcanogenic influence. The sediment samples that have the highest proportion of amorphous Fe oxyhydroxides (≥50% of bulk Fe) were found in FB. This fact and the high Fenorm and Ti concentrations, as well as high Ti/Al ratios, suggest an association (at least in part) between the amorphous Fe oxyhydroxides and the volcanoclastic particles in some samples from FB; however, the high variability in geochemical characteristics of the sediment suggests a complex combination of hydrodinamic, mineralogical and diagenetic properties in SQCL. Con la finalidad de identificar mediante herramientas geoquímicas la presencia de sedimento volcanoclástico producto del intempersimo y erosión de las rocas basálticas del campo volcánico de San Quintín (CVSQ), se analizaron las concentraciones de Fe, Ti y Al, así como la distribución de tamaño de grano en 32 muestras de sedimento superficial recolectado durante 2002 y 2003 en la laguna costera de San Quintín (LCSQ), Baja California. En esta zona, las rocas del CVSQ se caracterizan por tener concentraciones altas de Ti y Fe, comparadas con la corteza continental y el batolito peninsular. Lo mismo ocurre para los sedimentos de la LCSQ, los cuales tienen concentraciones de Fe (media 3.73%, desviación estándar S ± 0.99) significativamente más altas que otros sedimentos costeros reportados en Baja California y otras localidades. Las altas concentraciones de Fe normalizado (Fenorm) con respecto al porcentaje de sedimento con <63 µm en la LCSQ, indican que el enriquecimiento de Fe en algunas muestras se atribuye en parte a la presencia de minerales pesados y/o partículas líticas, relacionados con el intemperismo y erosión del CVSQ. Las altas concentraciones de Ti (media, 0.54%, S ± 0.19) en las muestras son atípicas para sedimentos costeros y marinos. Su enriquecimiento y valores altos de Ti/Al en algunas áreas de la LCSQ, especialmente en Bahía Falsa (BFa), sustentan la hipotesis de la influencia volcanoclástica. Las muestras de sedimento que contienen la mayor proporción de oxihidróxidos de Fe amorfo (≥50% del Fe total) se localizan en BFa. Lo anterior, junto con las altas concentraciones de Fenorm, y valores elevados de Ti y Ti/Al, sugiere una asociación (al menos parcial) entre los oxihidróxidos de Fe amorfo con partículas volcanoclásticas en algunos sitios de BFa. Sin embargo, la alta variabilidad en las características geoquímicas del sedimento, sugiere una compleja interacción entre las propiedades hidrodinámicas, mineralógicas y diagenéticas en la LCSQ. 2006-06-23 2021-06-03T03:55:13Z 2021-06-03T03:55:13Z info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article Artículo Arbitrado https://www.cienciasmarinas.com.mx/index.php/cmarinas/article/view/1067 10.7773/cm.v32i21.1067 https://hdl.handle.net/20.500.12930/7406 eng https://www.cienciasmarinas.com.mx/index.php/cmarinas/article/view/1067/951 application/pdf Iniversidad Autónoma de Baja California Ciencias Marinas; Vol. 32 No. 2 (2006); 205-217 Ciencias Marinas; Vol. 32 Núm. 2 (2006); 205-217 2395-9053 0185-3880

Geochemistry of Fe, Ti and Al as an indicator of volcanoclastic sedimentation in San Quintín coastal lagoon, Baja California, Mexico

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