Paleo Slide Set: Heinrich Events: Marine Record of Abrupt Climate Changes in the Late Pleistocene
Correlations with Heinrich Events. Data from Grimm et al. [1993].

Climatic variations as significant as Heinrich events probably affected climates and environments beyond 
the regions of the North Atlantic where Heinrich events appear in the sedimentological record. Variations 
in fossil pollen abundances in sediment cores retrieved from Lake Tulane in Florida, for instance, seem to 
correlate well with variations in lithic fragments from North Atlantic cores like DSDP 609. Notice how closely 
peaks in the percentage of Pinus (pine) pollen match the IRD spikes of H-1 through H-5 events. 

Photo Credits:
Thomas G. Andrews 
NOAA Paleoclimatology Program and INSTAAR, University of Colorado, Boulder