Publication Date:
2016-07-28
Description:
Coccoliths were studied from the ODP Hole 1002C and core PL07-39PC in the Cariaco
Basin. Increases in Emiliania huxleyi are synchronous with decreases of Gephyrocapsa oceanica and
vice versa. A new index (GEX) based on the relative abundances of these two taxa is proposed, and
correlates with various other proxies. It is shown that GEX can serve as upwelling proxy. This confirms
that the Intertropical Convergence Zone shifted north during the Bølling/Allerød, south during the
Younger Dryas and back north during the Preboreal. The upwelling proxy shows few discrepancies
with the terrigenous record.
Type:
Article
,
PeerReviewed
Format:
text
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