Please use this identifier to cite or link to this item: http://hdl.handle.net/1893/25053
Appears in Collections:Biological and Environmental Sciences Journal Articles
Peer Review Status: Refereed
Title: Hyperspectral cathodoluminescence imaging of modern and fossil carbonate shells
Author(s): England, Jennifer
Cusack, Maggie
Paterson, Niall W
Edwards, Paul
Lee, Martin R
Martin, Robert
Contact Email: maggie.cusack@stir.ac.uk
Keywords: Cathodoluminescence
hyperspectral CL imaging
biomineral
Issue Date: Sep-2006
Date Deposited: 1-Mar-2017
Citation: England J, Cusack M, Paterson NW, Edwards P, Lee MR & Martin R (2006) Hyperspectral cathodoluminescence imaging of modern and fossil carbonate shells. Journal of Geophysical Research: Biogeosciences, 111 (G3), Art. No.: G03001. https://doi.org/10.1029/2005JG000144
Abstract: Optical cathodoluminescence (CL) is commonly used to identify diagenetically altered carbonate fossils, yet such an interpretation is problematic as present-day carbonate shells may also luminesce. Hyperspectral CL imaging combines CL microscopy and CL spectroscopy to quantitatively analyze luminescence emission. Cold optical CL and hyperspectral CL imaging were carried out on four modern biominerals, a Rhynchonelliform brachiopod, a Craniid brachiopod, a bivalve, and the eggshell of the domestic fowl. A fossil Craniid brachiopod was analyzed to compare luminescence emission with that from the modern Craniid brachiopod. The beam conditions used for optical CL vary between studies, which hinders the direct comparison of CL analyses. This study assesses the effect of beam current and beam diameter on the intensity of luminescence emission. By characterizing the effect of beam conditions on different CaCO3 biominerals, comparisons can be made between CL studies. Hyperspectral CL imaging can be carried out in combination with WDS element analysis. By comparing hyperspectral CL images with element maps the causes of luminescence can to some extent be determined. The intensity of luminescence emitted from the modern biominerals differs under the same beam conditions. All four modern shells emit blue luminescence. In N. anomala, there is a correlation between Mn2+ concentration and luminescence intensity in the 620- to 630-nm wavelength band, which is apparent in the inner region of the shell. The fossil Craniid also emits blue luminescence, and texture within the shell wall is apparent; however, the luminescence emission between 620 and 630 nm that is evident in N. anomala is absent.
DOI Link: 10.1029/2005JG000144
Rights: The publisher does not allow this work to be made publicly available in this Repository. Please use the Request a Copy feature at the foot of the Repository record to request a copy directly from the author. You can only request a copy if you wish to use this work for your own research or private study.
Licence URL(s): http://www.rioxx.net/licenses/under-embargo-all-rights-reserved

Files in This Item:
File Description SizeFormat 
England_et_al-2006-Journal_of_Geophysical_Research-_Biogeosciences_(2005-2012).pdfFulltext - Published Version4.36 MBAdobe PDFUnder Embargo until 2999-12-19    Request a copy

Note: If any of the files in this item are currently embargoed, you can request a copy directly from the author by clicking the padlock icon above. However, this facility is dependent on the depositor still being contactable at their original email address.



This item is protected by original copyright



Items in the Repository are protected by copyright, with all rights reserved, unless otherwise indicated.

The metadata of the records in the Repository are available under the CC0 public domain dedication: No Rights Reserved https://creativecommons.org/publicdomain/zero/1.0/

If you believe that any material held in STORRE infringes copyright, please contact library@stir.ac.uk providing details and we will remove the Work from public display in STORRE and investigate your claim.