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TitreModeling the vertical succession of glaciofluvial sediments in a buried-valley aquifer using multivariate geostatistical simulation of grain-size distributions
AuteurDesbarats, A J; Russell, H A J; Pullan, S E; Sharpe, D R
SourceGIS and Spatial Analysis, Final Program IAMG 2005 ; par International Association for Mathematical Geology; 14.107, 2005, 6 pages
Année2005
Séries alt.Secteur des sciences de la Terre, Contribution externe 2005162
RéunionGIS and Spatial Analysis - 2005 Annual Conference of the International Association for Mathematical Geology; Toronto; CA; août 21-26, 2005
Documentfichier d'ordinateur
Lang.anglais
Mediaen ligne; numérique
ProvinceOntario
SNRC30M/05; 30M/11; 30M/12; 30M/13; 30M/14; 30M/15; 30M/16; 31D/01; 31D/02; 31D/03; 31D/04; 31D/06; 31C/04; 40P/09; 40P/16
Lat/Long OENS-80.0000 -78.0000 44.5000 43.2500
Sujetsvallées enfouies; aquifères; régimes des eaux souterraines; eau souterraine; analyses granulométriques; repartition granulométrique; dépôts glaciaires; dépôts fluvioglaciaires; faciès sédimentaires; analyse statistique; méthodes statistiques; statistiques; Moraine d'Oak Ridges ; hydrogéologie; géomathématique; Cénozoïque; Quaternaire
IllustrationsSemivariograms; ternary diagrams
Résumé(disponible en anglais seulement)
Min/Max Autocorrelation Factors (MAF) are used to perform spectral decomposition of auto- and cross-correlated grain-size distributions (GSD) from samples of glaciofluvial sediments taken along a borehole within a buried valley aquifer. The Sequential Gaussian method is then used to generate realizations of the MAF from which simulated GSDs are recovered by back-transformation. Univariate and bivariate statistics of the simulated GSDs are compared to those of the original data. Transition probabilities of categorical sediment types derived from simulated and original GSDs are also compared.
GEOSCAN ID220790