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Visualising mineralogical heterogeneities and texture in a mudstone concretion using hyperspectral imaging

Manß, Yasar; Hilgers, Christoph; Buddenbaum, Henning; Stanjek, Helge

Abstract:
It is often difficult to identify and quantify mineralogical heterogeneities on the centimetre to metre scale by optical means, when these heterogeneities have apparently similar colours. Therefore, a general image processing workflow combined with mineralogical analytical methods is presented by using contact-free hyperspectral imaging techniques on a mudstone concretion. The application of spectral algorithms reveals a distinct texture in a visually homogeneous black rock. The pattern is confirmed by optical and electron microscopy as well as X-ray diffraction, showing a layered texture of varying amounts of siderite and clay minerals. The rapid and contact-free visualisation of rock anisotropies such as mineralogical heterogeneities in overall homogeneous rocks may thus enable a better prediction of mechanical and petrophysical heterogeneities on mm- to 100 m scale.



Originalveröffentlichung
DOI: 10.1127/zdgg/2017/0118
Scopus
Zitationen: 2
Dimensions
Zitationen: 2
Zugehörige Institution(en) am KIT Institut für Angewandte Geowissenschaften (AGW)
KIT-Zentrum Klima und Umwelt (ZKU)
Publikationstyp Zeitschriftenaufsatz
Publikationsjahr 2017
Sprache Englisch
Identifikator ISSN: 0012-0189, 1860-1804
KITopen-ID: 1000077408
HGF-Programm 35.14.01 (POF III, LK 01) Effiziente Nutzung geothermisch. Energie
Erschienen in Zeitschrift der Deutschen Gesellschaft für Geowissenschaften
Verlag E Schweizerbart Science Publishers
Band 168
Heft 3
Seiten 403-414
Nachgewiesen in Dimensions
Scopus
Web of Science
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