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TitreThe North American soil geochemical landscapes project -- 2010 US geological survey update
TéléchargerTéléchargement (publication entière)
AuteurWoodruff, L G
SourcePresentations and recommendations from the workshop on the role of geochemical data in environmental and human health risk assessment, Halifax, 2010; par Rencz, A N (éd.); Kettles, I M (éd.); Commission géologique du Canada, Dossier public 6645, 2011 p. 24; 1 CD-ROM, https://doi.org/10.4095/287948
LiensCanadian Database of Geochemical Surveys, downloadable files
LiensBanque de données de levés géochimiques du Canada, fichiers téléchargeables
Année2011
ÉditeurRessources naturelles Canada
RéunionWorkshop on the role of geochemical data in environmental and human health risk assessment; Halifax; CA; mars 17-18, 2010
Documentdossier public
Lang.anglais
DOIhttps://doi.org/10.4095/287948
MediaCD-ROM; en ligne; numérique
Référence reliéeCette publication est contenue dans Rencz, A N; Kettles, I M; (2011). Presentations and recommendations from the workshop on the role of geochemical data in environmental and human health risk assessment, Halifax, 2010, Commission géologique du Canada, Dossier public 6645
Référence reliéeCette publication est reliée les publications suivantes
Formatspdf
Lat/Long OENS-125.0000 -65.0000 49.0000 25.0000
Sujetsanalyse environnementales; etudes de l'environnement; effets sur l'environnement; géochimie du sol; sols; études pédologiques; échantillons de sol; propriétés du sol; contamination des métaux lourds; pollution; substances polluantes; biogéochimie; levés biochimiques; dépôts glaciaires; tills; levés géochimiques; géochimie; pédologie; géologie des dépôts meubles/géomorphologie; géologie de l'environnement; Cénozoïque; Quaternaire
Consultation
Endroit
 
Bibliothèque de Ressources naturelles Canada - Ottawa (Sciences de la Terre)
 
Bibliothèque de Ressources naturelles Canada - Calgary (Sciences de la Terre)
 
Commission géologique du Canada (Atlantique)
 
Bibliothèque de Ressources naturelles Canada - Vancouver (Sciences de la Terre)
 
Bibliothèque de Ressources naturelles Canada - Québec (Sciences de la Terre)
 
ProgrammeEcosystems Risk Characterization, Géoscience de l'environnement
Diffusé2011 01 01
Résumé(disponible en anglais seulement)
A detailed knowledge of the concentration of chemicals in soil is required for calculation of human exposure to those chemicals via a soil pathway. At present, agencies involved with human and environmental health have no common understanding of soil geochemical background variation for North America and the processes that control this variation. The North American Soil Geochemical Landscapes Project, a tri-national initiative among the United States, Canada, and Mexico, was established to (1) develop a continental-scale design and protocols for generating soil geochemical data and (2) provide baseline soil geochemical data that are useful for a wide range of applications and disciplines, including public health. The Project is based on low-density sample collection over a spatially balanced array of 13,496 sites for the continent (1 sample site per 1,600 sq. km.). The core samples collected at each site include material from a depth of 0-5 cm and soils from the A and C horizons. In the US each sample is analyzed for more than 40 elements and mineralogy. Through partnerships with other federal agencies new data on the distribution of soil bacteria and microbial biomass are being generated.
Preliminary results indicate that concentrations of potentially toxic elements in soils commonly vary by 1-2 orders of magnitude. The observed variability is the result of several parameters such as soil parent material, climate, and human activities. Understanding this variation is critical in terms of understanding human exposure and for understanding soil pollution on a national scale. The USGS is committed to the completion of sample collection in the conterminous United States by the end of 2010 field season.
GEOSCAN ID287948