X-ray fluorescence (XRF) fingerprinting of Palaeogene deposits in Denmark

Nikolaj Krog Larsen; Kristian B.R Kristensen; Marie-Louise Siggaard-Andersen; Claus Heilmann-Clausen; Kurt H Kjær

doi:10.34194/geusb.v53.8330

Authors

Nikolaj Krog Larsen Globe Institute, University of Copenhagen, Denmark https://orcid.org/0000-0002-0117-1106
Kristian B.R Kristensen Globe Institute, University of Copenhagen, Denmark https://orcid.org/0000-0003-4171-9882
Marie-Louise Siggaard-Andersen Globe Institute, University of Copenhagen, Denmark https://orcid.org/0000-0001-8986-1920
Claus Heilmann-Clausen Department of Geoscience, Aarhus University, Denmark https://orcid.org/0000-0002-5894-7139
Kurt H Kjær Globe Institute, University of Copenhagen, Denmark

DOI:

https://doi.org/10.34194/geusb.v53.8330

Keywords:

Denmark, geochemical fingerprinting, Palaeogene, XRF analysis

Abstract

In this study, we test if cost-efficient X-ray fluorescence (XRF) analyses can be used to fingerprint Palaeogene clay and marl deposits in Denmark. A total of 67 samples from key sites in Denmark have been analysed. Our preliminary results indicate that it is possible locally within 10–30 km to distinguish between most of the Palaeogene units, but on a regional scale across Denmark, the units are not unique, and this probably reflects variations in clay mineralogy, grain size and calcareous content. Accordingly, we suggest that a comprehensive reference database is now needed if the full potential of the method is to be utilised, and this will ultimately result in more reliable geological models.

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