NothGRIP icecore d18O temperature variations3' ELSA greyscale stack, constructed from the individual

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Climate change during the last glacial cycle
NothGRIP ice-core d18O (temperature) variations3.
ELSA greyscale stack, constructed from the
individual cores from the dry maar lakes west of
Hoher List (HL2), Oberwinkel (OW1), Dehner (D3)
and the maar lake of Schalken-mehren (SM2). The
sections used for the stack all come from a
palaeo-waterdepth of 20-60 m. Dark sediment in
these cores is caused by a high organic cardon
content during warm phases light sections are
coloured by abundant siltsized quartz. The LEAP
is incorporated into the figure at its
varve-counted age of 118 kyr BP.
Sirocko et al., Nature 436, 2005