Title
Spatial prediction of the variability of Early Pleistocene subsurface sediments in the Netherlands - Part 2: Geochemistry
Author
Nederlands Instituut voor Toegepaste Geowetenschappen TNO
Huisman, D.J.
Weijers, J.P.
Dijkshoorn, L.
Veldkamp, A.
Publication year
2000
Abstract
We started a geochemical mapping campaign in the Early Pleistocene fluviatile Kedichem Formation in the Netherlands in order to meet the demand for more information about subsurface sediment compositions. Geochemical data were collected during a sampling campaign, and about 600 samples from the Kedichem Formation were analyzed. By linking the geochemical data with lithological classifications from the TNO-NITG borehole database, we established a geochemical prediction model. Elements were divided into classes according to their geochemical behaviour in relation to lithological parameters. For each of the classes, we combined lithological groups in to groups with relevant geochemical differences. By calculating for each element the average composition in each of these groups, we were able to predict the geochemical composition of subsurface sediments by 'translating' the spatial lithological data from the TNO-NITG borehole database into geochemical data. We visualized this model by calculating and interpolating the average composition of horizontal slices of the Kedichem Formation. The model performance is fairly good, although it has a tendency to underestimate extreme values.
Subject
Energy / Geological Survey Netherlands
Geological Survey Netherlands
Geochemistry
Mapping
Sediment
Subsurface
geochemistry
Pleistocene
sediment chemistry
spatial variation
Netherlands
To reference this document use:
http://resolver.tudelft.nl/uuid:a11ae6cc-7ad2-4e91-8646-e61593040dcd
TNO identifier
235789
ISSN
0016-7746
Source
Geologie en Mijnbouw/Netherlands Journal of Geosciences, 79 (79), 381-390
Document type
article