Isotopic composition of siderite as an indicator of depositional environment

Compilation of available oxygen and carbon isotopic data for siderites from different depositional environments indicates that marine and continental siderites are characterized by distinctive compositional fields. The most notable difference between the fields is the generally higher Δ13C values of...

Full description

Saved in:
Bibliographic Details
Published in:Geology (Boulder) 1992-09, Vol.20 (9), p.817-820
Main Authors: Mozley, Peter S, Wersin, Paul
Format: Article
Language:English
Subjects:
Brackish
C-13/C-12
carbon
carbonates
crystal chemistry
Freshwater
geochemical indicators
geochemistry
Geology
isotopes
Marine
marine environment
Mineralogy
Minerals
nonsilicates
O-18/O-16
oxygen
processes
reduction
sed rocks, sediments
Sedimentary petrology
sedimentary rocks
sedimentation
siderite
stable isotopes
sulfate ion
terrestrial environment
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Compilation of available oxygen and carbon isotopic data for siderites from different depositional environments indicates that marine and continental siderites are characterized by distinctive compositional fields. The most notable difference between the fields is the generally higher Δ13C values of continental vs. marine siderites. This difference appears to reflect the fact that marine sediments generally undergo a more extensive period of sulfate reduction than do the continental sediments in which siderite forms. Analysis of siderite geochemistry may assist in determination of depositional environment in cases where the available sedimentological evidence is ambiguous.
ISSN:0091-7613
1943-2682
DOI:10.1130/0091-7613(1992)020<0817:ICOSAA>2.3.CO;2