FN Archimer Export Format
PT J
TI Multiple sulfur isotope evidence for massive oceanic sulfate depletion in the aftermath of Snowball Earth
BT 
AF SANSJOFRE, Pierre
   CARTIGNY, Pierre
   TRINDADE, Ricardo I. F.
   NOGUEIRA, Afonso C. R.
   AGRINIER, Pierre
   ADER, Magali
AS 1:1,2,3;2:1;3:2;4:4;5:1;6:1;
FF 1:;2:;3:;4:;5:;6:;
C1 Univ Paris Diderot, Sorbonne Paris Cite, Inst Phys Globe Paris, Equipe Geochim Isotopes Stables,UMR CNRS 7154, F-75005 Paris, France.
   Univ Sao Paulo, Inst Astron Geofis & Ciencias Atmosfer, Dept Geofis, Rua Matao 1226, BR-05508900 Sao Paulo, Brazil.
   Univ Bretagne Occidentale, Lab Domaines Ocean, IUEM, F-29280 Plouzane, France.
   Fed Univ Para, Inst Geociencias, Fac Geol, BR-66075110 Belem, Para, Brazil.
C2 UNIV PARIS 07, FRANCE
   UNIV SAO PAULO, BRAZIL
   UBO, FRANCE
   UNIV FED PARA, BRAZIL
UM LGO
IN DOAJ
IF 12.124
TC 11
UR https://archimer.ifremer.fr/doc/00639/75075/75603.pdf
   https://archimer.ifremer.fr/doc/00639/75075/75604.pdf
LA English
DT Article
AB The terminal Neoproterozoic Era (850-542 Ma) is characterized by the most pronounced positive sulfur isotope (S-34/S-32) excursions in Earth's history, with strong variability and maximum values averaging delta S-34 similar to+38 parts per thousand. These excursions have been mostly interpreted in the framework of steady-state models, in which ocean sulfate concentrations do not fluctuate (that is, sulfate input equals sulfate output). Such models imply a large pyrite burial increase together with a dramatic fluctuation in the isotope composition of marine sulfate inputs, and/or a change in microbial sulfur metabolisms. Here, using multiple sulfur isotopes (S-33/S-32, S-34/S-32 and S-36/S-32 ratios) of carbonate-associated sulfate, we demonstrate that the steady-state assumption does not hold in the aftermath of the Marinoan Snowball Earth glaciation. The data attest instead to the most impressive event of oceanic sulfate drawdown in Earth's history, driven by an increased pyrite burial, which may have contributed to the Neoproterozoic oxygenation of the oceans and atmosphere. 
PY 2016
PD JUN
SO Nature Communications
SN 2041-1723
PU Nature Publishing Group
VL 7
UT 000380838000001
DI 10.1038/ncomms12192
ID 75075
ER

EF