Carbon and oxygen isotopic composition of structural carbonate in sedimentary francolite
- 1 November 1980
- journal article
- Published by Geological Society of London in Journal of the Geological Society
- Vol. 137 (6) , 669-673
- https://doi.org/10.1144/gsjgs.137.6.0669
Abstract
δ 13 C values for carbonate in francolite clearly distinguishes between authigenic varieties precipitated within anoxic sediments and diagenetic varieties produced by phosphatization of carbonates. δ 18 O values are characteristic of a deposit and, whilst apparently in equilibrium with pore-water in Recent deposits, are probably unreliable as palaeotemperature indicators generally. The isotopic composition of carbonate may therefore be used as a pointer to the mechanism of origin of francolite.This publication has 21 references indexed in Scilit:
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