NY
CT
PA
NJ
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Ag
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Pi
Sp
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Pollen Data from Allamuchy Pond Core
Depth (m) in Allamuchy Pond Core
7,000 years ago
7
10,000 years ago
8
9
14,000 years ago
10
0
10
20
30
40
50
60
0
10
20
0
10
20
30
40
50
60
70
80
Percentage of total pollen
No pollen
Pond mud
Unsorted pebbles
and clay
Pollen chart by David McGee.
Sediment type pattern fills from the U.S.G.S. F.G.D.C. Digital Cartographic Standard for Geologic Map Symbolization, http://ngmdb.usgs.gov/fgdc_gds/geolsymstd/download.php.
Temperature map courtesy of the NOAA-ESRL Physical Sciences Division, Boulder Colorado from their
Web site at http://www.esrl.noaa.gov/psd/. Dataset source: Kalnay et al.,The NCEP/NCAR 40-year
reanalysis project, Bull. Amer. Meteor. Soc., 77, 437-470, 1996.