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SUMMARY:Reconstructing the Earth's Climate using the Sulfur Cycle - Vicky 
 Rennie
DTSTART:20121101T131000Z
DTEND:20121101T140000Z
UID:TALK40129@talks.cam.ac.uk
CONTACT:Sven Friedemann
DESCRIPTION:The sulfur cycle is a key biogeochemical cycle which influence
 s climate\, ocean chemistry\, and biology. The sulfur cycle is affected by
  most significant biological and climatic events\, such as mass extinction
 s\, the evolution of oxygen in the Earth's atmosphere\, and the developmen
 t of early life.  Our ability to reconstruct these events depends critical
 ly on measurements of ancient sulfur in rocks. This provides a powerful to
 ol to understand climatic responses\, but our interpretations are limited 
 to the preservation of these rocks-which have often undergone severe envir
 onmental variations.  The discovery of sulfate in carbonate and its subseq
 uent extraction has provided us with the potential to reconstruct the anci
 ent sulfur cycle at higher temporal and spatial resolution\, with reliable
  preservation over time\, however the extent to which carbonate-associated
  sulfate provides a reliable record of ancient sulfur is not yet well cons
 trained.  We present new high resolution records of carbonate-associated s
 ulfate\, which both lend confidence to this method\, and have important im
 plications for the behaviour of other proxies for the sulfur cycle.
LOCATION:1 Newnham Terrace\, Darwin College
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