Evidence for Climate Teleconnections Between Greenland and the Sierra Nevada of California During the Holocene, Including the 8200 and 5200 Climate Events - Abrupt Climate Change: Mechanisms, Patterns, and Impacts - page 195

Table 1. Calibrated Radiocarbon Dates Used in This Study a
Depth (m) Material/Location Calculated Livermore 7/2002 Plus/Minus Calibrated CalPal 7/2005 Plus/Minus

Core A

41 cone scale/charcoal lens 1460 60 1366 49

51 needle/clay lens 1920 40 1867 42

148 needle/below charcoal 2210 45 2231 67

212 needle/charcoal lens 4830 100 5540 123

292 wood 6330 80 7245 104

392 leaf 6350 80 7280 91

Core C

27 needle/above charcoal 1520 45 1420 62

55 wood/below charcoal 1915 35 1860 35

71 cone scale/charcoal 2200 40 2227 67

88 charred wood 2925 35 3072 67

125 needle/charcoal 4560 70 5211 127

145 rootlet/below clay 5455 40 6250 38

172 rootlet/below clay 5920 60 6746 67

197 rootlet/top detritus lens 6285 40 7214 39

208 rootlet/detritus lens 6540 40 7455 29

213 rootlet/bottom clay lens 6600 35 7500 47

216 rootlet/detritus lens 6750 80 7599 66

222 rootlet/bottom clay lens 6640 40 7523 40

232 seed husk/charcoal lens 5680 60 6474 70

240 wood/dark gyttja lens 6000 45 6826 57

252 forb/charcoal lens 6305 40 7233 36

265 needle/charcoal lens 6420 60 7346 54

272 forb/bottom clay lens 6840 110 7695 92

276 forb 6825 50 7658 37

276 forb (duplicate) 6805 50 7645 32

330 needle/top of unit 6845 40 7670 37

371 forb/bottom of unit 6930 70 7762 65

385 needle/silt lens 7030 110 7842 99

390 needle/brown gyttja lens 6910 130 7757 115

390 needle (duplicate) 7020 230 7868 207

395 needle/charcoal 7250 90 8066 85

404 forb/clay lens 7410 40 8246 57

Core C Dates Not Used

133 cone scale/outlier 1850 50 1787 59

266 needle/contaminated 5775 50 6572 62

279 cone scale/outlier modern date
294 needle/not needed 6540 35 7453 25
a Accelerator mass spectrometry (AMS) dates were determined by the Lawrence Livermore Center for Accelerator Mass Spectrometry
from plant macrofossils collected from Coburn Lake, California. AMS dates were transformed to calibrated dates cal years B.P. (present is
A.D. 1950) using the Cologne Radiocarbon, Calibration, and Paleoclimate Research Package (CalPal): Online quickcal2004 version 1.2
(B. Weninger et al., 2004, available at http://download.calpal.de/calpal-info/).

episodic rather than uniform, and (3) a coherent pattern of
sedimentation resulted from using the methods employed.
The two sets of deep core sediments were compared
with each other to confirm the dating and stratigraphy of the

primary set of deep core sediments that was to be used for
further analysis. The two sets of cores were cross-correlated
with each other using (1) the initial 24 14 C-AMS dates; (2)
additional AMS dates derived from the secondary set of deep