Repository logo
 

Shortwave infrared hyperspectral imaging as a novel method to elucidate multi-phase dolomitization, recrystallization, and cementation in carbonate sedimentary rocks

Simple item page
dc.contributor.authorMcCormick, Cole A.
dc.contributor.authorCorlett, Hilary
dc.contributor.authorStacey, Jack
dc.contributor.authorHollis, Cathy
dc.contributor.authorFeng, Jilu
dc.contributor.authorRivard, Benoit
dc.contributor.authorOmma, Jenny E.
dc.date.accessioned2023-08-15T17:31:51Z
dc.date.available2023-08-15T17:31:51Z
dc.date.issued2021
dc.description.abstractCarbonate rocks undergo low-temperature, post-depositional changes, including mineral precipitation, dissolution, or recrystallisation (diagenesis). Unravelling the sequence of these events is time-consuming, expensive, and relies on destructive analytical techniques, yet such characterization is essential to understand their post-depositional history for mineral and energy exploitation and carbon storage. Conversely, hyperspectral imaging offers a rapid, non-destructive method to determine mineralogy, while also providing compositional and textural information. It is commonly employed to differentiate lithology, but it has never been used to discern complex diagenetic phases in a largely monomineralic succession. Using spatial-spectral endmember extraction, we explore the efficacy and limitations of hyperspectral imaging to elucidate multi-phase dolomitization and cementation in the Cathedral Formation (Western Canadian Sedimentary Basin). Spectral endmembers include limestone, two replacement dolomite phases, and three saddle dolomite phases. Endmember distributions were mapped using Spectral Angle Mapper, then sampled and analyzed to investigate the controls on their spectral signatures. The absorption-band position of each phase reveals changes in %Ca (molar Ca/(Ca + Mg)) and trace element substitution, whereas the spectral contrast correlates with texture. The ensuing mineral distribution maps provide meter-scale spatial information on the diagenetic history of the succession that can be used independently and to design a rigorous sampling protocol.
dc.identifier.citationMcCormick, C.A., Corlett, H., Stacey, J. et al. Shortwave infrared hyperspectral imaging as a novel method to elucidate multi-phase dolomitization, recrystallization, and cementation in carbonate sedimentary rocks. Sci Rep 11, 21732 (2021). https://doi.org/10.1038/s41598-021-01118-4
dc.identifier.urihttps://hdl.handle.net/20.500.14078/3180
dc.language.isoen
dc.rightsAttribution (CC BY)
dc.rights.urihttps://creativecommons.org/licenses/by/4.0/
dc.subjectcarbonate sedimentary rocks
dc.subjecthyperspectral imaging
dc.subjectdiagenetic phases
dc.titleShortwave infrared hyperspectral imaging as a novel method to elucidate multi-phase dolomitization, recrystallization, and cementation in carbonate sedimentary rocksen
dc.typeArticle

Files

Original bundle
Now showing 1 - 1 of 1
Thumbnail Image
Name:
Corlett-shortwave-infrared-hyperspectral-imaging.pdf
Size:
13.34 MB
Format:
Adobe Portable Document Format
Download

Collections

Department of Physical Sciences