Phosphorite geochemistry: isotopic evidence for meteoric alteration of francolite on a local scale

McArthur, J.M., Hamilton, P.J., Greensmith, J.T., Boyce, A.J. , Fallick, A.E., Birch, G., Walsh, J.N., Benmore, R.A. and Coleman, M.L. (1987) Phosphorite geochemistry: isotopic evidence for meteoric alteration of francolite on a local scale. Chemical Geology: Isotope Geoscience Section, 65(3-4), pp. 415-425. (doi: 10.1016/0168-9622(87)90017-0)

Abstract

Meteoric alteration of francolite in the Lower Pliocene Upper Varswater Formation of Cape Provihce, South Africa, has produced clear diagenetic trends in 87Sr/86Sr, δ13C, δ180, Na, S04, Sr/Ca and Nd/Ca that reflect the degree of groundwater interaction with francolite. When these diagenetic trends are extrapolated to zero alteration, δ13C-values for the original francolite-C02 are heavier than −3%‰ showing that organic-rich sediments played no part in the production of this francolite.

• Item Type: Articles
• Status: Published
• Refereed: Yes
• Glasgow Author(s) Enlighten ID: Boyce, Professor Adrian and Fallick, Professor Anthony
• Authors: McArthur, J.M., Hamilton, P.J., Greensmith, J.T., Boyce, A.J., Fallick, A.E., Birch, G., Walsh, J.N., Benmore, R.A., and Coleman, M.L.
• College/School: College of Science and Engineering > Scottish Universities Environmental Research Centre
• Journal Name: Chemical Geology: Isotope Geoscience Section
• Publisher: Elsevier B.V.
• ISSN: 0168-9622
• ISSN (Online): 1872-6836