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Title: Parámetros granulométricos: comparación entre el método gráfico y el método de los momentos
Authors: Alcántara Carrió, Javier
Cabrera, L. 
Alonso Bilbao, Ignacio 
Alejo Flores, Irene
Rey, S. 
Gago Duport, Luis
UNESCO Clasification: 251090-1 Geología marina. Dinámica sedimentaria
Keywords: Granulometría
Issue Date: 2001
Publisher: Sociedad Geológica de España
Journal: Geotemas (Madrid) 
Conference: XIV Congreso Nacional de Sedimentología. IV Coloquio del Cretácico de España 
Abstract: The two classical methods, moment and graphic, used to determine grain size parameters are revised and compared, using 282 beach, inner shelf and aeolian samples. Mean size and sorting values are similar, but skewness and kurtosis show great differences after applying the method. Furthermore, classification ranges for kurtosis and skewness obtained by moment's method have not been described. Normalisation improves kurtosis but not skewness when moment analysis is used. Separate treatment of uni modal, bimodal and polymodal distributions does not help to get better results. Consequently the graphic method should be preferably used until a sedimentary interpretation of third moment is obtained.
ISSN: 1576-5172
Source: Geotemas ( Madrid ) [ISSN 1576-5172], v. 3 (1), p. 33-37
Appears in Collections:Actas de congresos
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