dor_id: 4122939
506.#.#.a: Público
590.#.#.d: Los artículos enviados a la "Revista Mexicana de Ciencias Geológicas" se juzgan por medio de un proceso de revisión por pares
510.0.#.a: Consejo Nacional de Ciencia y Tecnología (CONACyT); Sistema Regional de Información en Línea para Revistas Científicas de América Latina, el Caribe, España y Portugal (Latindex); Scientific Electronic Library Online (SciELO); SCOPUS, Web Of Science (WoS); Science Citation Index-Expanded, Current Contents/ Physical, Chemical & Earth Sciences, Geoscience e-Journals, Periódica, Directory of Open Access & Hybrid Journals
561.#.#.u: https://www.geologia.unam.mx/
650.#.4.x: Físico Matemáticas y Ciencias de la Tierra
336.#.#.b: article
336.#.#.3: Artículo de Investigación
336.#.#.a: Artículo
351.#.#.6: http://rmcg.geociencias.unam.mx/index.php/rmcg/index
351.#.#.b: Revista Mexicana de Ciencias Geológicas
351.#.#.a: Artículos
harvesting_group: RevistasUNAM
270.1.#.p: Revistas UNAM. Dirección General de Publicaciones y Fomento Editorial, UNAM en revistas@unam.mx
590.#.#.c: Open Journal Systems (OJS)
270.#.#.d: MX
270.1.#.d: México
590.#.#.b: Concentrador
883.#.#.u: https://revistas.unam.mx/catalogo/
883.#.#.a: Revistas UNAM
590.#.#.a: Coordinación de Difusión Cultural
883.#.#.1: https://www.publicaciones.unam.mx/
883.#.#.q: Dirección General de Publicaciones y Fomento Editorial
850.#.#.a: Universidad Nacional Autónoma de México
856.4.0.u: http://rmcg.geociencias.unam.mx/index.php/rmcg/article/view/1007/839
100.1.#.a: Hernández-silva, Gilberto; Solorio-munguía, Gregorio; Vasallo-morales, Luis; Flores-delgadillo, Lourdes; Maples-vermeersch, Mireya; Hernández-santiago, Daniel; Alcalá-martínez, René
524.#.#.a: Hernández-silva, Gilberto, et al. (2000). Dispersión de Ni y Cr en sedimentos y suelos superficiales derivados de piroxenitas, serpentinitas y basaltos de la cuenca San Juan de Otates, Estado de Guanajuato, México. Revista Mexicana de Ciencias Geológicas; Vol 17 No 2, 2000; 125-136. Recuperado de https://repositorio.unam.mx/contenidos/4122939
245.1.0.a: Dispersión de Ni y Cr en sedimentos y suelos superficiales derivados de piroxenitas, serpentinitas y basaltos de la cuenca San Juan de Otates, Estado de Guanajuato, México
502.#.#.c: Universidad Nacional Autónoma de México
561.1.#.a: Instituto de Geología, UNAM
264.#.0.c: 2000
264.#.1.c: 2018-07-05
506.1.#.a: La titularidad de los derechos patrimoniales de esta obra pertenece a las instituciones editoras. Su uso se rige por una licencia Creative Commons BY-NC-ND 4.0 Internacional, https://creativecommons.org/licenses/by-nc-nd/4.0/legalcode.es, para un uso diferente consultar al responsable jurídico del repositorio por medio del correo electrónico rmcg@geociencias.unam.mx
884.#.#.k: http://rmcg.geociencias.unam.mx/index.php/rmcg/article/view/1007
001.#.#.#: 113.oai:ojs.rmcg.geociencias.unam.mx:article/1007
041.#.7.h: spa
520.3.#.a: The particular aim of this work is to determine within the hydrologic San Juan de Otates system, State of Guanajuato, Mexico, the dispersion characteristics of total Ni and Cr in sediments and surficial soils derived from ultramaphic rocks, and also to confirm if there is dispersion of these elements towards neighboring subbasin. Usually both of these elements are found in nature associated to piroxenites, serpentinites and basalts, rocks which are all found in the upper part of the basin. For the sake of analysis the area under study was divided into five subbasins. In order to determine the concentration levels of these elements 56 sediment sites and 46 soil sites were chosen at a depth of 0-20 cm; the sampling sites were selected considering geology, geoform, slope, drenage, soil unities, land use, and civil engineering works. In order to stablish the association existing between mineralogy and metalic ions the macroscopy technique was used. The samples were digested in a microwave oven, utilizing aqua regia as extractant. Concentrations were determined by atomic absorption flame spectrophotometry, with detection limits of 0.004 mg/kg-1for Ni and 0.002 mg/kg-1 for Cr. The ILWIS geographical information system was used for mapping the distribution of metalic ions. The statistical analysis did not show significant differences in the mean Ni and Cr contents both in soils and sediments. The grater Cr levels were found in the San Juan de Otates subbasin, while Ni showed a greater concentration in three subbasins in comparison with the rest of the area. The multivariate analysis pointed out that the two variables used (Ni and Cr) were not sufficient to make a proper choice of sampling sites in the different subbasins. According to mean world wide range reported for Ni and Cr, there are areas with natural contents higher than the ones found in San Juan de Otates basin. The Ni and Cr dispersion from its source point, shows geographical irregularity. In El Bajío, the channel of Santa Ana del Conde, which joins the arroyos of San Juan de Otates and El Juache, has lately increased the contents of the elements studied. Finally, the maps of Ni and Cr show, with respect to superficial soils and sediments, that there does not exist dispersion of these elements towards neighboring subbasins.
773.1.#.t: Revista Mexicana de Ciencias Geológicas; Vol 17 No 2 (2000); 125-136
773.1.#.o: http://rmcg.geociencias.unam.mx/index.php/rmcg/index
022.#.#.a: ISSN electrónico: 2007-2902; ISSN impreso: 1026-8774
310.#.#.a: Cuatrimestral
300.#.#.a: Páginas: 125-136
264.#.1.b: Instituto de Geología, UNAM
handle: 604ff93f16567fc5
harvesting_date: 2023-08-23 17:00:00.0
856.#.0.q: application/pdf
file_creation_date: 2005-03-01 14:24:50.0
file_modification_date: 2005-03-01 20:26:41.0
file_creator: Sara Solis
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245.1.0.b: Dispersión de Ni y Cr en sedimentos y suelos superficiales derivados de piroxenitas, serpentinitas y basaltos de la cuenca San Juan de Otates, Estado de Guanajuato, México
last_modified: 2023-08-23 17:00:00
license_url: https://creativecommons.org/licenses/by-nc-nd/4.0/legalcode.es
license_type: by-nc-nd
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