FN Archimer Export Format
PT J
TI Iron isotope constraints on the Archean and Paleoproterozoic ocean redox state
BT 
AF ROUXEL, Olivier
   BEKKER, A
   EDWARDS, KJ
AS 1:;2:;3:;
FF 1:;2:;3:;
C1 Woods Hole Oceanog Inst, Marine Chem & Geochem Dept, Geomicrobiol Grp, Woods Hole, MA 02543 USA.
   Carnegie Inst Washington, Geophys Lab, Washington, DC 20015 USA.
C2 Woods Hole Oceanog Inst, Marine Chem & Geochem Dept, Geomicrobiol Grp, Woods Hole, MA 02543 USA.
   Carnegie Inst Washington, Geophys Lab, Washington, DC 20015 USA.
IF 30.927
TC 357
UR https://archimer.ifremer.fr/doc/00078/18965/16580.pdf
LA English
DT Article
AB The response of the ocean redox state to the rise of atmospheric oxygen about 2.3 billion years ago (Ga) is a matter of controversy. Here we provide iron isotope evidence that the change in the ocean iron cycle occurred at the same time as the change in the atmospheric redox state. Variable and negative iron isotope values in pyrites older than about 2.3 Ga suggest that an iron-rich global ocean was strongly affected by the deposition of iron oxides. Between 2.3 and 1.8 Ga, positive iron isotope values of pyrite likely reflect an increase in the precipitation of iron sulfides relative to iron oxides in a redox stratified ocean.
PY 2005
PD FEB
SO Science
SN 0036-8075
PU Amer Assoc Advancement Science
VL 307
IS 5712
UT 000227197300042
BP 1088
EP 1091
DI 10.1126/science.1105692
ID 18965
ER

EF