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http://cimav.repositorioinstitucional.mx/jspui/handle/1004/1446| Arsenic anomalies of an arid region determined from sediment geochemistry | |
| MARIA TERESA ALARCON HERRERA | |
| Acceso Abierto | |
| Sin Derechos Reservados | |
| arsenic anomalies exploratory data analysis | |
| Sediment geochemical data for four 1° x 2° quadrangles in northern Mexico were merged. Exploratory data analysis (EDA) was applied to the resulting dataset (N= 2,046) in order to identify areas with arsenic (As) anomalies and their possible source. Two types of anomalies were identified. Mild As anomalies had a threshold value of 9.40 mg/kg and clustered around outcrops of volcanic rock and non-producing sulfide mineral deposits. Extreme As anomalies had a threshold value of 14.41 mg/kg and clustered near sulfide mineral deposits and towards the center of drainage basins. Spatial distribution suggests that the source of mild anomalies is enriched natural concentrations while mine tailings and/or man-made contaminants are the source of extreme anomalies. | |
| 2010 | |
| Memoria de congreso | |
| Inglés | |
| OTRAS | |
| Versión revisada | |
| submittedVersion - Versión revisada | |
| Aparece en las colecciones: | Artículos de Congresos |
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| Fichero | Tamaño | Formato | |
|---|---|---|---|
| WRI-Arsenic Anomalies-2010.pdf | 1.9 MB | Adobe PDF | Visualizar/Abrir |