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New methods applied to the microstructure analysis of Messel oil shale: confocal laser scanning microscopy (CLSM) and environmental scanning electron microscopy (ESEM)

Published online by Cambridge University Press:  05 August 2003

THOMAS NIX
Affiliation:
Engineering Geology Division, Institute for Applied Geosciences, Darmstadt University of Technology, Schnittspahnstrasse 9, D-64287 Darmstadt, Germany
SUSANNE FEIST-BURKHARDT
Affiliation:
Palaeontology Department, The Natural History Museum, Cromwell Road, London SW7 5BD, UK

Abstract

Investigations of mass movements of the Messel oil shale in Germany presumed that swell- and especially shrink-deformations of the organic-rich clay were among the factors triggering initial displacements. Within the scope of the present studies, delicate clay/organic microstructures had to be deciphered. Reactions of clay minerals and microstructures upon dehydration were observed by environmental scanning electron microscopy (ESEM) and the distribution of organic matter was studied by confocal laser scanning microscopy (CLSM) in fluorescence mode. ESEM and CLSM have been demonstrated to be valuable tools for the microstructural characterization of laminated organic-rich sediments. The application of these analytical and imaging techniques will be of great interest to a wide range of geological disciplines such as palaeontology, organic petrology, engineering geology and global change studies.

Type
Original Article
Copyright
© 2003 Cambridge University Press

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